2015-06-21 17:33:46 +02:00
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/*
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Simple DirectMedia Layer
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2017-01-02 03:33:28 +01:00
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Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
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2015-06-21 17:33:46 +02:00
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_RENDER_OGL && !SDL_RENDER_DISABLED
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#include "SDL_hints.h"
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#include "SDL_log.h"
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#include "SDL_assert.h"
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#include "SDL_opengl.h"
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#include "../SDL_sysrender.h"
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#include "SDL_shaders_gl.h"
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#ifdef __MACOSX__
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#include <OpenGL/OpenGL.h>
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#endif
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/* To prevent unnecessary window recreation,
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* these should match the defaults selected in SDL_GL_ResetAttributes
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*/
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#define RENDERER_CONTEXT_MAJOR 2
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#define RENDERER_CONTEXT_MINOR 1
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/* OpenGL renderer implementation */
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/* Details on optimizing the texture path on Mac OS X:
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http://developer.apple.com/library/mac/#documentation/GraphicsImaging/Conceptual/OpenGL-MacProgGuide/opengl_texturedata/opengl_texturedata.html
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*/
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/* Used to re-create the window with OpenGL capability */
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extern int SDL_RecreateWindow(SDL_Window * window, Uint32 flags);
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static const float inv255f = 1.0f / 255.0f;
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static SDL_Renderer *GL_CreateRenderer(SDL_Window * window, Uint32 flags);
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static void GL_WindowEvent(SDL_Renderer * renderer,
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const SDL_WindowEvent *event);
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static int GL_GetOutputSize(SDL_Renderer * renderer, int *w, int *h);
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static int GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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static int GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * rect, const void *pixels,
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int pitch);
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static int GL_UpdateTextureYUV(SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * rect,
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const Uint8 *Yplane, int Ypitch,
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const Uint8 *Uplane, int Upitch,
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const Uint8 *Vplane, int Vpitch);
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static int GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * rect, void **pixels, int *pitch);
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static void GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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static int GL_SetRenderTarget(SDL_Renderer * renderer, SDL_Texture * texture);
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static int GL_UpdateViewport(SDL_Renderer * renderer);
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static int GL_UpdateClipRect(SDL_Renderer * renderer);
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static int GL_RenderClear(SDL_Renderer * renderer);
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static int GL_RenderDrawPoints(SDL_Renderer * renderer,
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const SDL_FPoint * points, int count);
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static int GL_RenderDrawLines(SDL_Renderer * renderer,
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const SDL_FPoint * points, int count);
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static int GL_RenderFillRects(SDL_Renderer * renderer,
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const SDL_FRect * rects, int count);
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static int GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * srcrect, const SDL_FRect * dstrect);
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static int GL_RenderCopyEx(SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * srcrect, const SDL_FRect * dstrect,
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const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip);
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static int GL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
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Uint32 pixel_format, void * pixels, int pitch);
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static void GL_RenderPresent(SDL_Renderer * renderer);
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static void GL_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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static void GL_DestroyRenderer(SDL_Renderer * renderer);
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static int GL_BindTexture (SDL_Renderer * renderer, SDL_Texture *texture, float *texw, float *texh);
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static int GL_UnbindTexture (SDL_Renderer * renderer, SDL_Texture *texture);
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SDL_RenderDriver GL_RenderDriver = {
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GL_CreateRenderer,
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{
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"opengl",
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(SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_TARGETTEXTURE),
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1,
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{SDL_PIXELFORMAT_ARGB8888},
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0,
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0}
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};
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typedef struct GL_FBOList GL_FBOList;
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struct GL_FBOList
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{
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Uint32 w, h;
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GLuint FBO;
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GL_FBOList *next;
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};
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typedef struct
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{
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SDL_GLContext context;
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SDL_bool debug_enabled;
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SDL_bool GL_ARB_debug_output_supported;
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int errors;
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char **error_messages;
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GLDEBUGPROCARB next_error_callback;
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GLvoid *next_error_userparam;
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SDL_bool GL_ARB_texture_non_power_of_two_supported;
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SDL_bool GL_ARB_texture_rectangle_supported;
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struct {
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GL_Shader shader;
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Uint32 color;
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int blendMode;
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} current;
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SDL_bool GL_EXT_framebuffer_object_supported;
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GL_FBOList *framebuffers;
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/* OpenGL functions */
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#define SDL_PROC(ret,func,params) ret (APIENTRY *func) params;
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#include "SDL_glfuncs.h"
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#undef SDL_PROC
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/* Multitexture support */
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SDL_bool GL_ARB_multitexture_supported;
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PFNGLACTIVETEXTUREARBPROC glActiveTextureARB;
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GLint num_texture_units;
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PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT;
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PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT;
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PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT;
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PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT;
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PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT;
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/* Shader support */
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GL_ShaderContext *shaders;
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} GL_RenderData;
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typedef struct
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{
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GLuint texture;
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GLenum type;
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GLfloat texw;
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GLfloat texh;
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GLenum format;
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GLenum formattype;
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void *pixels;
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int pitch;
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SDL_Rect locked_rect;
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/* YUV texture support */
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SDL_bool yuv;
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SDL_bool nv12;
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GLuint utexture;
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GLuint vtexture;
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GL_FBOList *fbo;
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} GL_TextureData;
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SDL_FORCE_INLINE const char*
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GL_TranslateError (GLenum error)
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{
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#define GL_ERROR_TRANSLATE(e) case e: return #e;
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switch (error) {
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GL_ERROR_TRANSLATE(GL_INVALID_ENUM)
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GL_ERROR_TRANSLATE(GL_INVALID_VALUE)
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GL_ERROR_TRANSLATE(GL_INVALID_OPERATION)
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GL_ERROR_TRANSLATE(GL_OUT_OF_MEMORY)
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GL_ERROR_TRANSLATE(GL_NO_ERROR)
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GL_ERROR_TRANSLATE(GL_STACK_OVERFLOW)
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GL_ERROR_TRANSLATE(GL_STACK_UNDERFLOW)
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GL_ERROR_TRANSLATE(GL_TABLE_TOO_LARGE)
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default:
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return "UNKNOWN";
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}
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#undef GL_ERROR_TRANSLATE
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}
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SDL_FORCE_INLINE void
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GL_ClearErrors(SDL_Renderer *renderer)
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{
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GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
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if (!data->debug_enabled)
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{
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return;
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}
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if (data->GL_ARB_debug_output_supported) {
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if (data->errors) {
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int i;
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for (i = 0; i < data->errors; ++i) {
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SDL_free(data->error_messages[i]);
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}
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SDL_free(data->error_messages);
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data->errors = 0;
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data->error_messages = NULL;
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}
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} else {
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while (data->glGetError() != GL_NO_ERROR) {
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continue;
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}
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}
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}
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SDL_FORCE_INLINE int
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GL_CheckAllErrors (const char *prefix, SDL_Renderer *renderer, const char *file, int line, const char *function)
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{
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GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
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int ret = 0;
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if (!data->debug_enabled)
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{
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return 0;
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}
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if (data->GL_ARB_debug_output_supported) {
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if (data->errors) {
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int i;
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for (i = 0; i < data->errors; ++i) {
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SDL_SetError("%s: %s (%d): %s %s", prefix, file, line, function, data->error_messages[i]);
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ret = -1;
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}
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GL_ClearErrors(renderer);
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}
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} else {
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/* check gl errors (can return multiple errors) */
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for (;;) {
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GLenum error = data->glGetError();
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if (error != GL_NO_ERROR) {
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if (prefix == NULL || prefix[0] == '\0') {
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prefix = "generic";
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}
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SDL_SetError("%s: %s (%d): %s %s (0x%X)", prefix, file, line, function, GL_TranslateError(error), error);
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ret = -1;
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} else {
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break;
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}
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}
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}
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return ret;
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}
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#if 0
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#define GL_CheckError(prefix, renderer)
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#elif defined(_MSC_VER)
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#define GL_CheckError(prefix, renderer) GL_CheckAllErrors(prefix, renderer, __FILE__, __LINE__, __FUNCTION__)
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#else
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#define GL_CheckError(prefix, renderer) GL_CheckAllErrors(prefix, renderer, __FILE__, __LINE__, __PRETTY_FUNCTION__)
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#endif
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static int
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GL_LoadFunctions(GL_RenderData * data)
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{
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#ifdef __SDL_NOGETPROCADDR__
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#define SDL_PROC(ret,func,params) data->func=func;
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#else
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#define SDL_PROC(ret,func,params) \
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do { \
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data->func = SDL_GL_GetProcAddress(#func); \
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if ( ! data->func ) { \
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return SDL_SetError("Couldn't load GL function %s: %s", #func, SDL_GetError()); \
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2015-06-21 17:33:46 +02:00
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} \
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} while ( 0 );
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#endif /* __SDL_NOGETPROCADDR__ */
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#include "SDL_glfuncs.h"
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#undef SDL_PROC
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return 0;
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}
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static SDL_GLContext SDL_CurrentContext = NULL;
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static int
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GL_ActivateRenderer(SDL_Renderer * renderer)
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{
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GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
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if (SDL_CurrentContext != data->context ||
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SDL_GL_GetCurrentContext() != data->context) {
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if (SDL_GL_MakeCurrent(renderer->window, data->context) < 0) {
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return -1;
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}
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SDL_CurrentContext = data->context;
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GL_UpdateViewport(renderer);
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}
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GL_ClearErrors(renderer);
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return 0;
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}
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/* This is called if we need to invalidate all of the SDL OpenGL state */
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static void
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GL_ResetState(SDL_Renderer *renderer)
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{
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GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
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if (SDL_GL_GetCurrentContext() == data->context) {
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GL_UpdateViewport(renderer);
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} else {
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GL_ActivateRenderer(renderer);
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}
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data->current.shader = SHADER_NONE;
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data->current.color = 0xffffffff;
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2015-06-21 17:33:46 +02:00
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data->current.blendMode = -1;
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data->glDisable(GL_DEPTH_TEST);
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data->glDisable(GL_CULL_FACE);
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/* This ended up causing video discrepancies between OpenGL and Direct3D */
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/* data->glEnable(GL_LINE_SMOOTH); */
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data->glMatrixMode(GL_MODELVIEW);
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data->glLoadIdentity();
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GL_CheckError("", renderer);
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}
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static void APIENTRY
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GL_HandleDebugMessage(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const char *message, const void *userParam)
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{
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SDL_Renderer *renderer = (SDL_Renderer *) userParam;
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GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
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if (type == GL_DEBUG_TYPE_ERROR_ARB) {
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/* Record this error */
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int errors = data->errors + 1;
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char **error_messages = SDL_realloc(data->error_messages, errors * sizeof(*data->error_messages));
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if (error_messages) {
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data->errors = errors;
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data->error_messages = error_messages;
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data->error_messages[data->errors-1] = SDL_strdup(message);
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}
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}
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/* If there's another error callback, pass it along, otherwise log it */
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if (data->next_error_callback) {
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data->next_error_callback(source, type, id, severity, length, message, data->next_error_userparam);
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} else {
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if (type == GL_DEBUG_TYPE_ERROR_ARB) {
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SDL_LogError(SDL_LOG_CATEGORY_RENDER, "%s", message);
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} else {
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|
|
SDL_LogDebug(SDL_LOG_CATEGORY_RENDER, "%s", message);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static GL_FBOList *
|
|
|
|
GL_GetFBO(GL_RenderData *data, Uint32 w, Uint32 h)
|
|
|
|
{
|
|
|
|
GL_FBOList *result = data->framebuffers;
|
|
|
|
|
|
|
|
while (result && ((result->w != w) || (result->h != h))) {
|
|
|
|
result = result->next;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!result) {
|
|
|
|
result = SDL_malloc(sizeof(GL_FBOList));
|
|
|
|
if (result) {
|
|
|
|
result->w = w;
|
|
|
|
result->h = h;
|
|
|
|
data->glGenFramebuffersEXT(1, &result->FBO);
|
|
|
|
result->next = data->framebuffers;
|
|
|
|
data->framebuffers = result;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
SDL_Renderer *
|
|
|
|
GL_CreateRenderer(SDL_Window * window, Uint32 flags)
|
|
|
|
{
|
|
|
|
SDL_Renderer *renderer;
|
|
|
|
GL_RenderData *data;
|
|
|
|
GLint value;
|
|
|
|
Uint32 window_flags;
|
2015-12-11 01:25:34 +01:00
|
|
|
int profile_mask = 0, major = 0, minor = 0;
|
2015-06-21 17:33:46 +02:00
|
|
|
SDL_bool changed_window = SDL_FALSE;
|
|
|
|
|
|
|
|
SDL_GL_GetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, &profile_mask);
|
|
|
|
SDL_GL_GetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, &major);
|
|
|
|
SDL_GL_GetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, &minor);
|
|
|
|
|
|
|
|
window_flags = SDL_GetWindowFlags(window);
|
|
|
|
if (!(window_flags & SDL_WINDOW_OPENGL) ||
|
|
|
|
profile_mask == SDL_GL_CONTEXT_PROFILE_ES || major != RENDERER_CONTEXT_MAJOR || minor != RENDERER_CONTEXT_MINOR) {
|
|
|
|
|
|
|
|
changed_window = SDL_TRUE;
|
|
|
|
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 0);
|
|
|
|
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, RENDERER_CONTEXT_MAJOR);
|
|
|
|
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, RENDERER_CONTEXT_MINOR);
|
|
|
|
|
|
|
|
if (SDL_RecreateWindow(window, window_flags | SDL_WINDOW_OPENGL) < 0) {
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
|
|
|
|
if (!renderer) {
|
|
|
|
SDL_OutOfMemory();
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
data = (GL_RenderData *) SDL_calloc(1, sizeof(*data));
|
|
|
|
if (!data) {
|
|
|
|
GL_DestroyRenderer(renderer);
|
|
|
|
SDL_OutOfMemory();
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
renderer->WindowEvent = GL_WindowEvent;
|
|
|
|
renderer->GetOutputSize = GL_GetOutputSize;
|
|
|
|
renderer->CreateTexture = GL_CreateTexture;
|
|
|
|
renderer->UpdateTexture = GL_UpdateTexture;
|
|
|
|
renderer->UpdateTextureYUV = GL_UpdateTextureYUV;
|
|
|
|
renderer->LockTexture = GL_LockTexture;
|
|
|
|
renderer->UnlockTexture = GL_UnlockTexture;
|
|
|
|
renderer->SetRenderTarget = GL_SetRenderTarget;
|
|
|
|
renderer->UpdateViewport = GL_UpdateViewport;
|
|
|
|
renderer->UpdateClipRect = GL_UpdateClipRect;
|
|
|
|
renderer->RenderClear = GL_RenderClear;
|
|
|
|
renderer->RenderDrawPoints = GL_RenderDrawPoints;
|
|
|
|
renderer->RenderDrawLines = GL_RenderDrawLines;
|
|
|
|
renderer->RenderFillRects = GL_RenderFillRects;
|
|
|
|
renderer->RenderCopy = GL_RenderCopy;
|
|
|
|
renderer->RenderCopyEx = GL_RenderCopyEx;
|
|
|
|
renderer->RenderReadPixels = GL_RenderReadPixels;
|
|
|
|
renderer->RenderPresent = GL_RenderPresent;
|
|
|
|
renderer->DestroyTexture = GL_DestroyTexture;
|
|
|
|
renderer->DestroyRenderer = GL_DestroyRenderer;
|
|
|
|
renderer->GL_BindTexture = GL_BindTexture;
|
|
|
|
renderer->GL_UnbindTexture = GL_UnbindTexture;
|
|
|
|
renderer->info = GL_RenderDriver.info;
|
2016-10-01 19:52:24 +02:00
|
|
|
renderer->info.flags = SDL_RENDERER_ACCELERATED;
|
2015-06-21 17:33:46 +02:00
|
|
|
renderer->driverdata = data;
|
|
|
|
renderer->window = window;
|
|
|
|
|
|
|
|
data->context = SDL_GL_CreateContext(window);
|
|
|
|
if (!data->context) {
|
|
|
|
GL_DestroyRenderer(renderer);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
if (SDL_GL_MakeCurrent(window, data->context) < 0) {
|
|
|
|
GL_DestroyRenderer(renderer);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (GL_LoadFunctions(data) < 0) {
|
|
|
|
GL_DestroyRenderer(renderer);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef __MACOSX__
|
|
|
|
/* Enable multi-threaded rendering */
|
|
|
|
/* Disabled until Ryan finishes his VBO/PBO code...
|
|
|
|
CGLEnable(CGLGetCurrentContext(), kCGLCEMPEngine);
|
|
|
|
*/
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (flags & SDL_RENDERER_PRESENTVSYNC) {
|
|
|
|
SDL_GL_SetSwapInterval(1);
|
|
|
|
} else {
|
|
|
|
SDL_GL_SetSwapInterval(0);
|
|
|
|
}
|
|
|
|
if (SDL_GL_GetSwapInterval() > 0) {
|
|
|
|
renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check for debug output support */
|
|
|
|
if (SDL_GL_GetAttribute(SDL_GL_CONTEXT_FLAGS, &value) == 0 &&
|
|
|
|
(value & SDL_GL_CONTEXT_DEBUG_FLAG)) {
|
|
|
|
data->debug_enabled = SDL_TRUE;
|
|
|
|
}
|
|
|
|
if (data->debug_enabled && SDL_GL_ExtensionSupported("GL_ARB_debug_output")) {
|
|
|
|
PFNGLDEBUGMESSAGECALLBACKARBPROC glDebugMessageCallbackARBFunc = (PFNGLDEBUGMESSAGECALLBACKARBPROC) SDL_GL_GetProcAddress("glDebugMessageCallbackARB");
|
|
|
|
|
|
|
|
data->GL_ARB_debug_output_supported = SDL_TRUE;
|
2016-11-24 03:52:48 +01:00
|
|
|
data->glGetPointerv(GL_DEBUG_CALLBACK_FUNCTION_ARB, (GLvoid **)(char *)&data->next_error_callback);
|
2015-06-21 17:33:46 +02:00
|
|
|
data->glGetPointerv(GL_DEBUG_CALLBACK_USER_PARAM_ARB, &data->next_error_userparam);
|
|
|
|
glDebugMessageCallbackARBFunc(GL_HandleDebugMessage, renderer);
|
|
|
|
|
|
|
|
/* Make sure our callback is called when errors actually happen */
|
|
|
|
data->glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (SDL_GL_ExtensionSupported("GL_ARB_texture_non_power_of_two")) {
|
|
|
|
data->GL_ARB_texture_non_power_of_two_supported = SDL_TRUE;
|
|
|
|
} else if (SDL_GL_ExtensionSupported("GL_ARB_texture_rectangle") ||
|
|
|
|
SDL_GL_ExtensionSupported("GL_EXT_texture_rectangle")) {
|
|
|
|
data->GL_ARB_texture_rectangle_supported = SDL_TRUE;
|
|
|
|
}
|
|
|
|
if (data->GL_ARB_texture_rectangle_supported) {
|
|
|
|
data->glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB, &value);
|
|
|
|
renderer->info.max_texture_width = value;
|
|
|
|
renderer->info.max_texture_height = value;
|
|
|
|
} else {
|
|
|
|
data->glGetIntegerv(GL_MAX_TEXTURE_SIZE, &value);
|
|
|
|
renderer->info.max_texture_width = value;
|
|
|
|
renderer->info.max_texture_height = value;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check for multitexture support */
|
|
|
|
if (SDL_GL_ExtensionSupported("GL_ARB_multitexture")) {
|
|
|
|
data->glActiveTextureARB = (PFNGLACTIVETEXTUREARBPROC) SDL_GL_GetProcAddress("glActiveTextureARB");
|
|
|
|
if (data->glActiveTextureARB) {
|
|
|
|
data->GL_ARB_multitexture_supported = SDL_TRUE;
|
|
|
|
data->glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &data->num_texture_units);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check for shader support */
|
2016-10-08 08:40:44 +02:00
|
|
|
if (SDL_GetHintBoolean(SDL_HINT_RENDER_OPENGL_SHADERS, SDL_TRUE)) {
|
2015-06-21 17:33:46 +02:00
|
|
|
data->shaders = GL_CreateShaderContext();
|
|
|
|
}
|
|
|
|
SDL_LogInfo(SDL_LOG_CATEGORY_RENDER, "OpenGL shaders: %s",
|
|
|
|
data->shaders ? "ENABLED" : "DISABLED");
|
|
|
|
|
|
|
|
/* We support YV12 textures using 3 textures and a shader */
|
|
|
|
if (data->shaders && data->num_texture_units >= 3) {
|
|
|
|
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_YV12;
|
|
|
|
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_IYUV;
|
|
|
|
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_NV12;
|
|
|
|
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_NV21;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef __MACOSX__
|
|
|
|
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_UYVY;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (SDL_GL_ExtensionSupported("GL_EXT_framebuffer_object")) {
|
|
|
|
data->GL_EXT_framebuffer_object_supported = SDL_TRUE;
|
|
|
|
data->glGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC)
|
|
|
|
SDL_GL_GetProcAddress("glGenFramebuffersEXT");
|
|
|
|
data->glDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC)
|
|
|
|
SDL_GL_GetProcAddress("glDeleteFramebuffersEXT");
|
|
|
|
data->glFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)
|
|
|
|
SDL_GL_GetProcAddress("glFramebufferTexture2DEXT");
|
|
|
|
data->glBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC)
|
|
|
|
SDL_GL_GetProcAddress("glBindFramebufferEXT");
|
|
|
|
data->glCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC)
|
|
|
|
SDL_GL_GetProcAddress("glCheckFramebufferStatusEXT");
|
|
|
|
renderer->info.flags |= SDL_RENDERER_TARGETTEXTURE;
|
|
|
|
}
|
|
|
|
data->framebuffers = NULL;
|
|
|
|
|
|
|
|
/* Set up parameters for rendering */
|
|
|
|
GL_ResetState(renderer);
|
|
|
|
|
|
|
|
return renderer;
|
|
|
|
|
|
|
|
error:
|
|
|
|
if (changed_window) {
|
|
|
|
/* Uh oh, better try to put it back... */
|
|
|
|
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, profile_mask);
|
|
|
|
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, major);
|
|
|
|
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, minor);
|
|
|
|
SDL_RecreateWindow(window, window_flags);
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
GL_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
|
|
|
|
{
|
|
|
|
if (event->event == SDL_WINDOWEVENT_SIZE_CHANGED ||
|
|
|
|
event->event == SDL_WINDOWEVENT_SHOWN ||
|
|
|
|
event->event == SDL_WINDOWEVENT_HIDDEN) {
|
|
|
|
/* Rebind the context to the window area and update matrices */
|
|
|
|
SDL_CurrentContext = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_GetOutputSize(SDL_Renderer * renderer, int *w, int *h)
|
|
|
|
{
|
|
|
|
SDL_GL_GetDrawableSize(renderer->window, w, h);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
SDL_FORCE_INLINE int
|
|
|
|
power_of_2(int input)
|
|
|
|
{
|
|
|
|
int value = 1;
|
|
|
|
|
|
|
|
while (value < input) {
|
|
|
|
value <<= 1;
|
|
|
|
}
|
|
|
|
return value;
|
|
|
|
}
|
|
|
|
|
|
|
|
SDL_FORCE_INLINE SDL_bool
|
|
|
|
convert_format(GL_RenderData *renderdata, Uint32 pixel_format,
|
|
|
|
GLint* internalFormat, GLenum* format, GLenum* type)
|
|
|
|
{
|
|
|
|
switch (pixel_format) {
|
|
|
|
case SDL_PIXELFORMAT_ARGB8888:
|
|
|
|
*internalFormat = GL_RGBA8;
|
|
|
|
*format = GL_BGRA;
|
|
|
|
*type = GL_UNSIGNED_INT_8_8_8_8_REV;
|
|
|
|
break;
|
|
|
|
case SDL_PIXELFORMAT_YV12:
|
|
|
|
case SDL_PIXELFORMAT_IYUV:
|
|
|
|
case SDL_PIXELFORMAT_NV12:
|
|
|
|
case SDL_PIXELFORMAT_NV21:
|
|
|
|
*internalFormat = GL_LUMINANCE;
|
|
|
|
*format = GL_LUMINANCE;
|
|
|
|
*type = GL_UNSIGNED_BYTE;
|
|
|
|
break;
|
|
|
|
#ifdef __MACOSX__
|
|
|
|
case SDL_PIXELFORMAT_UYVY:
|
|
|
|
*internalFormat = GL_RGB8;
|
|
|
|
*format = GL_YCBCR_422_APPLE;
|
|
|
|
*type = GL_UNSIGNED_SHORT_8_8_APPLE;
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
default:
|
|
|
|
return SDL_FALSE;
|
|
|
|
}
|
|
|
|
return SDL_TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static GLenum
|
|
|
|
GetScaleQuality(void)
|
|
|
|
{
|
|
|
|
const char *hint = SDL_GetHint(SDL_HINT_RENDER_SCALE_QUALITY);
|
|
|
|
|
|
|
|
if (!hint || *hint == '0' || SDL_strcasecmp(hint, "nearest") == 0) {
|
|
|
|
return GL_NEAREST;
|
|
|
|
} else {
|
|
|
|
return GL_LINEAR;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
|
|
|
|
{
|
|
|
|
GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
|
|
|
|
GL_TextureData *data;
|
|
|
|
GLint internalFormat;
|
|
|
|
GLenum format, type;
|
|
|
|
int texture_w, texture_h;
|
|
|
|
GLenum scaleMode;
|
|
|
|
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
2016-10-01 19:52:24 +02:00
|
|
|
if (texture->access == SDL_TEXTUREACCESS_TARGET &&
|
|
|
|
!renderdata->GL_EXT_framebuffer_object_supported) {
|
|
|
|
return SDL_SetError("Render targets not supported by OpenGL");
|
|
|
|
}
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
if (!convert_format(renderdata, texture->format, &internalFormat,
|
|
|
|
&format, &type)) {
|
|
|
|
return SDL_SetError("Texture format %s not supported by OpenGL",
|
|
|
|
SDL_GetPixelFormatName(texture->format));
|
|
|
|
}
|
|
|
|
|
|
|
|
data = (GL_TextureData *) SDL_calloc(1, sizeof(*data));
|
|
|
|
if (!data) {
|
|
|
|
return SDL_OutOfMemory();
|
|
|
|
}
|
|
|
|
|
|
|
|
if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
|
|
|
|
size_t size;
|
|
|
|
data->pitch = texture->w * SDL_BYTESPERPIXEL(texture->format);
|
|
|
|
size = texture->h * data->pitch;
|
|
|
|
if (texture->format == SDL_PIXELFORMAT_YV12 ||
|
|
|
|
texture->format == SDL_PIXELFORMAT_IYUV) {
|
|
|
|
/* Need to add size for the U and V planes */
|
|
|
|
size += (2 * (texture->h * data->pitch) / 4);
|
|
|
|
}
|
|
|
|
if (texture->format == SDL_PIXELFORMAT_NV12 ||
|
|
|
|
texture->format == SDL_PIXELFORMAT_NV21) {
|
|
|
|
/* Need to add size for the U/V plane */
|
|
|
|
size += ((texture->h * data->pitch) / 2);
|
|
|
|
}
|
|
|
|
data->pixels = SDL_calloc(1, size);
|
|
|
|
if (!data->pixels) {
|
|
|
|
SDL_free(data);
|
|
|
|
return SDL_OutOfMemory();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (texture->access == SDL_TEXTUREACCESS_TARGET) {
|
|
|
|
data->fbo = GL_GetFBO(renderdata, texture->w, texture->h);
|
|
|
|
} else {
|
|
|
|
data->fbo = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
GL_CheckError("", renderer);
|
|
|
|
renderdata->glGenTextures(1, &data->texture);
|
|
|
|
if (GL_CheckError("glGenTextures()", renderer) < 0) {
|
|
|
|
if (data->pixels) {
|
|
|
|
SDL_free(data->pixels);
|
|
|
|
}
|
|
|
|
SDL_free(data);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
texture->driverdata = data;
|
|
|
|
|
|
|
|
if (renderdata->GL_ARB_texture_non_power_of_two_supported) {
|
|
|
|
data->type = GL_TEXTURE_2D;
|
|
|
|
texture_w = texture->w;
|
|
|
|
texture_h = texture->h;
|
|
|
|
data->texw = 1.0f;
|
|
|
|
data->texh = 1.0f;
|
|
|
|
} else if (renderdata->GL_ARB_texture_rectangle_supported) {
|
|
|
|
data->type = GL_TEXTURE_RECTANGLE_ARB;
|
|
|
|
texture_w = texture->w;
|
|
|
|
texture_h = texture->h;
|
|
|
|
data->texw = (GLfloat) texture_w;
|
|
|
|
data->texh = (GLfloat) texture_h;
|
|
|
|
} else {
|
|
|
|
data->type = GL_TEXTURE_2D;
|
|
|
|
texture_w = power_of_2(texture->w);
|
|
|
|
texture_h = power_of_2(texture->h);
|
|
|
|
data->texw = (GLfloat) (texture->w) / texture_w;
|
|
|
|
data->texh = (GLfloat) texture->h / texture_h;
|
|
|
|
}
|
|
|
|
|
|
|
|
data->format = format;
|
|
|
|
data->formattype = type;
|
|
|
|
scaleMode = GetScaleQuality();
|
|
|
|
renderdata->glEnable(data->type);
|
|
|
|
renderdata->glBindTexture(data->type, data->texture);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER, scaleMode);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_MAG_FILTER, scaleMode);
|
|
|
|
/* According to the spec, CLAMP_TO_EDGE is the default for TEXTURE_RECTANGLE
|
|
|
|
and setting it causes an INVALID_ENUM error in the latest NVidia drivers.
|
|
|
|
*/
|
|
|
|
if (data->type != GL_TEXTURE_RECTANGLE_ARB) {
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S,
|
|
|
|
GL_CLAMP_TO_EDGE);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T,
|
|
|
|
GL_CLAMP_TO_EDGE);
|
|
|
|
}
|
|
|
|
#ifdef __MACOSX__
|
|
|
|
#ifndef GL_TEXTURE_STORAGE_HINT_APPLE
|
|
|
|
#define GL_TEXTURE_STORAGE_HINT_APPLE 0x85BC
|
|
|
|
#endif
|
|
|
|
#ifndef STORAGE_CACHED_APPLE
|
|
|
|
#define STORAGE_CACHED_APPLE 0x85BE
|
|
|
|
#endif
|
|
|
|
#ifndef STORAGE_SHARED_APPLE
|
|
|
|
#define STORAGE_SHARED_APPLE 0x85BF
|
|
|
|
#endif
|
|
|
|
if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_STORAGE_HINT_APPLE,
|
|
|
|
GL_STORAGE_SHARED_APPLE);
|
|
|
|
} else {
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_STORAGE_HINT_APPLE,
|
|
|
|
GL_STORAGE_CACHED_APPLE);
|
|
|
|
}
|
|
|
|
if (texture->access == SDL_TEXTUREACCESS_STREAMING
|
|
|
|
&& texture->format == SDL_PIXELFORMAT_ARGB8888
|
|
|
|
&& (texture->w % 8) == 0) {
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE);
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH,
|
|
|
|
(data->pitch / SDL_BYTESPERPIXEL(texture->format)));
|
|
|
|
renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w,
|
|
|
|
texture_h, 0, format, type, data->pixels);
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_FALSE);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w,
|
|
|
|
texture_h, 0, format, type, NULL);
|
|
|
|
}
|
|
|
|
renderdata->glDisable(data->type);
|
|
|
|
if (GL_CheckError("glTexImage2D()", renderer) < 0) {
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (texture->format == SDL_PIXELFORMAT_YV12 ||
|
|
|
|
texture->format == SDL_PIXELFORMAT_IYUV) {
|
|
|
|
data->yuv = SDL_TRUE;
|
|
|
|
|
|
|
|
renderdata->glGenTextures(1, &data->utexture);
|
|
|
|
renderdata->glGenTextures(1, &data->vtexture);
|
|
|
|
renderdata->glEnable(data->type);
|
|
|
|
|
|
|
|
renderdata->glBindTexture(data->type, data->utexture);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER,
|
|
|
|
scaleMode);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_MAG_FILTER,
|
|
|
|
scaleMode);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S,
|
|
|
|
GL_CLAMP_TO_EDGE);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T,
|
|
|
|
GL_CLAMP_TO_EDGE);
|
|
|
|
renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w/2,
|
|
|
|
texture_h/2, 0, format, type, NULL);
|
|
|
|
|
|
|
|
renderdata->glBindTexture(data->type, data->vtexture);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER,
|
|
|
|
scaleMode);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_MAG_FILTER,
|
|
|
|
scaleMode);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S,
|
|
|
|
GL_CLAMP_TO_EDGE);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T,
|
|
|
|
GL_CLAMP_TO_EDGE);
|
|
|
|
renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w/2,
|
|
|
|
texture_h/2, 0, format, type, NULL);
|
|
|
|
|
|
|
|
renderdata->glDisable(data->type);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (texture->format == SDL_PIXELFORMAT_NV12 ||
|
|
|
|
texture->format == SDL_PIXELFORMAT_NV21) {
|
|
|
|
data->nv12 = SDL_TRUE;
|
|
|
|
|
|
|
|
renderdata->glGenTextures(1, &data->utexture);
|
|
|
|
renderdata->glEnable(data->type);
|
|
|
|
|
|
|
|
renderdata->glBindTexture(data->type, data->utexture);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER,
|
|
|
|
scaleMode);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_MAG_FILTER,
|
|
|
|
scaleMode);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S,
|
|
|
|
GL_CLAMP_TO_EDGE);
|
|
|
|
renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T,
|
|
|
|
GL_CLAMP_TO_EDGE);
|
|
|
|
renderdata->glTexImage2D(data->type, 0, GL_LUMINANCE_ALPHA, texture_w/2,
|
|
|
|
texture_h/2, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, NULL);
|
|
|
|
renderdata->glDisable(data->type);
|
|
|
|
}
|
|
|
|
|
|
|
|
return GL_CheckError("", renderer);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
|
|
|
|
const SDL_Rect * rect, const void *pixels, int pitch)
|
|
|
|
{
|
|
|
|
GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
|
|
|
|
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
|
|
|
|
const int texturebpp = SDL_BYTESPERPIXEL(texture->format);
|
|
|
|
|
|
|
|
SDL_assert(texturebpp != 0); /* otherwise, division by zero later. */
|
|
|
|
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
|
|
|
renderdata->glEnable(data->type);
|
|
|
|
renderdata->glBindTexture(data->type, data->texture);
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, (pitch / texturebpp));
|
|
|
|
renderdata->glTexSubImage2D(data->type, 0, rect->x, rect->y, rect->w,
|
|
|
|
rect->h, data->format, data->formattype,
|
|
|
|
pixels);
|
|
|
|
if (data->yuv) {
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, (pitch / 2));
|
|
|
|
|
|
|
|
/* Skip to the correct offset into the next texture */
|
|
|
|
pixels = (const void*)((const Uint8*)pixels + rect->h * pitch);
|
|
|
|
if (texture->format == SDL_PIXELFORMAT_YV12) {
|
|
|
|
renderdata->glBindTexture(data->type, data->vtexture);
|
|
|
|
} else {
|
|
|
|
renderdata->glBindTexture(data->type, data->utexture);
|
|
|
|
}
|
|
|
|
renderdata->glTexSubImage2D(data->type, 0, rect->x/2, rect->y/2,
|
|
|
|
rect->w/2, rect->h/2,
|
|
|
|
data->format, data->formattype, pixels);
|
|
|
|
|
|
|
|
/* Skip to the correct offset into the next texture */
|
|
|
|
pixels = (const void*)((const Uint8*)pixels + (rect->h * pitch)/4);
|
|
|
|
if (texture->format == SDL_PIXELFORMAT_YV12) {
|
|
|
|
renderdata->glBindTexture(data->type, data->utexture);
|
|
|
|
} else {
|
|
|
|
renderdata->glBindTexture(data->type, data->vtexture);
|
|
|
|
}
|
|
|
|
renderdata->glTexSubImage2D(data->type, 0, rect->x/2, rect->y/2,
|
|
|
|
rect->w/2, rect->h/2,
|
|
|
|
data->format, data->formattype, pixels);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (data->nv12) {
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, (pitch / 2));
|
|
|
|
|
|
|
|
/* Skip to the correct offset into the next texture */
|
|
|
|
pixels = (const void*)((const Uint8*)pixels + rect->h * pitch);
|
|
|
|
renderdata->glBindTexture(data->type, data->utexture);
|
|
|
|
renderdata->glTexSubImage2D(data->type, 0, rect->x/2, rect->y/2,
|
|
|
|
rect->w/2, rect->h/2,
|
|
|
|
GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, pixels);
|
|
|
|
}
|
|
|
|
renderdata->glDisable(data->type);
|
|
|
|
|
|
|
|
return GL_CheckError("glTexSubImage2D()", renderer);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_UpdateTextureYUV(SDL_Renderer * renderer, SDL_Texture * texture,
|
|
|
|
const SDL_Rect * rect,
|
|
|
|
const Uint8 *Yplane, int Ypitch,
|
|
|
|
const Uint8 *Uplane, int Upitch,
|
|
|
|
const Uint8 *Vplane, int Vpitch)
|
|
|
|
{
|
|
|
|
GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
|
|
|
|
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
|
|
|
|
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
|
|
|
renderdata->glEnable(data->type);
|
|
|
|
renderdata->glBindTexture(data->type, data->texture);
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, Ypitch);
|
|
|
|
renderdata->glTexSubImage2D(data->type, 0, rect->x, rect->y, rect->w,
|
|
|
|
rect->h, data->format, data->formattype,
|
|
|
|
Yplane);
|
|
|
|
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, Upitch);
|
|
|
|
renderdata->glBindTexture(data->type, data->utexture);
|
|
|
|
renderdata->glTexSubImage2D(data->type, 0, rect->x/2, rect->y/2,
|
|
|
|
rect->w/2, rect->h/2,
|
|
|
|
data->format, data->formattype, Uplane);
|
|
|
|
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, Vpitch);
|
|
|
|
renderdata->glBindTexture(data->type, data->vtexture);
|
|
|
|
renderdata->glTexSubImage2D(data->type, 0, rect->x/2, rect->y/2,
|
|
|
|
rect->w/2, rect->h/2,
|
|
|
|
data->format, data->formattype, Vplane);
|
|
|
|
renderdata->glDisable(data->type);
|
|
|
|
|
|
|
|
return GL_CheckError("glTexSubImage2D()", renderer);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
|
|
|
|
const SDL_Rect * rect, void **pixels, int *pitch)
|
|
|
|
{
|
|
|
|
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
|
|
|
|
|
|
|
|
data->locked_rect = *rect;
|
|
|
|
*pixels =
|
|
|
|
(void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
|
|
|
|
rect->x * SDL_BYTESPERPIXEL(texture->format));
|
|
|
|
*pitch = data->pitch;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
|
|
|
|
{
|
|
|
|
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
|
|
|
|
const SDL_Rect *rect;
|
|
|
|
void *pixels;
|
|
|
|
|
|
|
|
rect = &data->locked_rect;
|
|
|
|
pixels =
|
|
|
|
(void *) ((Uint8 *) data->pixels + rect->y * data->pitch +
|
|
|
|
rect->x * SDL_BYTESPERPIXEL(texture->format));
|
|
|
|
GL_UpdateTexture(renderer, texture, rect, pixels, data->pitch);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_SetRenderTarget(SDL_Renderer * renderer, SDL_Texture * texture)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
GL_TextureData *texturedata;
|
|
|
|
GLenum status;
|
|
|
|
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
2016-10-01 19:52:24 +02:00
|
|
|
if (!data->GL_EXT_framebuffer_object_supported) {
|
|
|
|
return SDL_SetError("Render targets not supported by OpenGL");
|
|
|
|
}
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
if (texture == NULL) {
|
|
|
|
data->glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
texturedata = (GL_TextureData *) texture->driverdata;
|
|
|
|
data->glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, texturedata->fbo->FBO);
|
|
|
|
/* TODO: check if texture pixel format allows this operation */
|
|
|
|
data->glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, texturedata->type, texturedata->texture, 0);
|
|
|
|
/* Check FBO status */
|
|
|
|
status = data->glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
|
|
|
|
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
|
|
|
|
return SDL_SetError("glFramebufferTexture2DEXT() failed");
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_UpdateViewport(SDL_Renderer * renderer)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
|
|
|
|
if (SDL_CurrentContext != data->context) {
|
|
|
|
/* We'll update the viewport after we rebind the context */
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (renderer->target) {
|
|
|
|
data->glViewport(renderer->viewport.x, renderer->viewport.y,
|
|
|
|
renderer->viewport.w, renderer->viewport.h);
|
|
|
|
} else {
|
|
|
|
int w, h;
|
|
|
|
|
2016-10-13 13:57:31 +02:00
|
|
|
SDL_GL_GetDrawableSize(renderer->window, &w, &h);
|
2015-06-21 17:33:46 +02:00
|
|
|
data->glViewport(renderer->viewport.x, (h - renderer->viewport.y - renderer->viewport.h),
|
|
|
|
renderer->viewport.w, renderer->viewport.h);
|
|
|
|
}
|
|
|
|
|
|
|
|
data->glMatrixMode(GL_PROJECTION);
|
|
|
|
data->glLoadIdentity();
|
|
|
|
if (renderer->viewport.w && renderer->viewport.h) {
|
|
|
|
if (renderer->target) {
|
|
|
|
data->glOrtho((GLdouble) 0,
|
|
|
|
(GLdouble) renderer->viewport.w,
|
|
|
|
(GLdouble) 0,
|
|
|
|
(GLdouble) renderer->viewport.h,
|
|
|
|
0.0, 1.0);
|
|
|
|
} else {
|
|
|
|
data->glOrtho((GLdouble) 0,
|
|
|
|
(GLdouble) renderer->viewport.w,
|
|
|
|
(GLdouble) renderer->viewport.h,
|
|
|
|
(GLdouble) 0,
|
|
|
|
0.0, 1.0);
|
|
|
|
}
|
|
|
|
}
|
2017-01-28 06:23:27 +01:00
|
|
|
data->glMatrixMode(GL_MODELVIEW);
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
return GL_CheckError("", renderer);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_UpdateClipRect(SDL_Renderer * renderer)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
|
|
|
|
if (renderer->clipping_enabled) {
|
|
|
|
const SDL_Rect *rect = &renderer->clip_rect;
|
|
|
|
data->glEnable(GL_SCISSOR_TEST);
|
|
|
|
if (renderer->target) {
|
|
|
|
data->glScissor(renderer->viewport.x + rect->x, renderer->viewport.y + rect->y, rect->w, rect->h);
|
|
|
|
} else {
|
|
|
|
int w, h;
|
|
|
|
|
2016-10-13 13:57:31 +02:00
|
|
|
SDL_GL_GetDrawableSize(renderer->window, &w, &h);
|
2015-12-28 21:15:58 +01:00
|
|
|
data->glScissor(renderer->viewport.x + rect->x, h - renderer->viewport.y - rect->y - rect->h, rect->w, rect->h);
|
2015-06-21 17:33:46 +02:00
|
|
|
}
|
|
|
|
} else {
|
|
|
|
data->glDisable(GL_SCISSOR_TEST);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
GL_SetShader(GL_RenderData * data, GL_Shader shader)
|
|
|
|
{
|
|
|
|
if (data->shaders && shader != data->current.shader) {
|
|
|
|
GL_SelectShader(data->shaders, shader);
|
|
|
|
data->current.shader = shader;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
GL_SetColor(GL_RenderData * data, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
|
|
|
|
{
|
|
|
|
Uint32 color = ((a << 24) | (r << 16) | (g << 8) | b);
|
|
|
|
|
|
|
|
if (color != data->current.color) {
|
|
|
|
data->glColor4f((GLfloat) r * inv255f,
|
|
|
|
(GLfloat) g * inv255f,
|
|
|
|
(GLfloat) b * inv255f,
|
|
|
|
(GLfloat) a * inv255f);
|
|
|
|
data->current.color = color;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
GL_SetBlendMode(GL_RenderData * data, int blendMode)
|
|
|
|
{
|
|
|
|
if (blendMode != data->current.blendMode) {
|
|
|
|
switch (blendMode) {
|
|
|
|
case SDL_BLENDMODE_NONE:
|
|
|
|
data->glDisable(GL_BLEND);
|
|
|
|
break;
|
|
|
|
case SDL_BLENDMODE_BLEND:
|
|
|
|
data->glEnable(GL_BLEND);
|
|
|
|
data->glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
|
|
|
|
break;
|
|
|
|
case SDL_BLENDMODE_ADD:
|
|
|
|
data->glEnable(GL_BLEND);
|
|
|
|
data->glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE, GL_ZERO, GL_ONE);
|
|
|
|
break;
|
|
|
|
case SDL_BLENDMODE_MOD:
|
|
|
|
data->glEnable(GL_BLEND);
|
|
|
|
data->glBlendFuncSeparate(GL_ZERO, GL_SRC_COLOR, GL_ZERO, GL_ONE);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
data->current.blendMode = blendMode;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
GL_SetDrawingState(SDL_Renderer * renderer)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
|
|
|
GL_SetColor(data, renderer->r,
|
|
|
|
renderer->g,
|
|
|
|
renderer->b,
|
|
|
|
renderer->a);
|
|
|
|
|
|
|
|
GL_SetBlendMode(data, renderer->blendMode);
|
|
|
|
|
|
|
|
GL_SetShader(data, SHADER_SOLID);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_RenderClear(SDL_Renderer * renderer)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
|
|
|
data->glClearColor((GLfloat) renderer->r * inv255f,
|
|
|
|
(GLfloat) renderer->g * inv255f,
|
|
|
|
(GLfloat) renderer->b * inv255f,
|
|
|
|
(GLfloat) renderer->a * inv255f);
|
|
|
|
|
2016-10-01 20:46:32 +02:00
|
|
|
if (renderer->clipping_enabled) {
|
|
|
|
data->glDisable(GL_SCISSOR_TEST);
|
|
|
|
}
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
data->glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
|
2016-10-01 20:46:32 +02:00
|
|
|
if (renderer->clipping_enabled) {
|
|
|
|
data->glEnable(GL_SCISSOR_TEST);
|
|
|
|
}
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_RenderDrawPoints(SDL_Renderer * renderer, const SDL_FPoint * points,
|
|
|
|
int count)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
GL_SetDrawingState(renderer);
|
|
|
|
|
|
|
|
data->glBegin(GL_POINTS);
|
|
|
|
for (i = 0; i < count; ++i) {
|
|
|
|
data->glVertex2f(0.5f + points[i].x, 0.5f + points[i].y);
|
|
|
|
}
|
|
|
|
data->glEnd();
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_RenderDrawLines(SDL_Renderer * renderer, const SDL_FPoint * points,
|
|
|
|
int count)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
GL_SetDrawingState(renderer);
|
|
|
|
|
|
|
|
if (count > 2 &&
|
|
|
|
points[0].x == points[count-1].x && points[0].y == points[count-1].y) {
|
|
|
|
data->glBegin(GL_LINE_LOOP);
|
|
|
|
/* GL_LINE_LOOP takes care of the final segment */
|
|
|
|
--count;
|
|
|
|
for (i = 0; i < count; ++i) {
|
|
|
|
data->glVertex2f(0.5f + points[i].x, 0.5f + points[i].y);
|
|
|
|
}
|
|
|
|
data->glEnd();
|
|
|
|
} else {
|
|
|
|
#if defined(__MACOSX__) || defined(__WIN32__)
|
|
|
|
#else
|
|
|
|
int x1, y1, x2, y2;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
data->glBegin(GL_LINE_STRIP);
|
|
|
|
for (i = 0; i < count; ++i) {
|
|
|
|
data->glVertex2f(0.5f + points[i].x, 0.5f + points[i].y);
|
|
|
|
}
|
|
|
|
data->glEnd();
|
|
|
|
|
|
|
|
/* The line is half open, so we need one more point to complete it.
|
|
|
|
* http://www.opengl.org/documentation/specs/version1.1/glspec1.1/node47.html
|
|
|
|
* If we have to, we can use vertical line and horizontal line textures
|
|
|
|
* for vertical and horizontal lines, and then create custom textures
|
|
|
|
* for diagonal lines and software render those. It's terrible, but at
|
|
|
|
* least it would be pixel perfect.
|
|
|
|
*/
|
|
|
|
data->glBegin(GL_POINTS);
|
|
|
|
#if defined(__MACOSX__) || defined(__WIN32__)
|
|
|
|
/* Mac OS X and Windows seem to always leave the last point open */
|
|
|
|
data->glVertex2f(0.5f + points[count-1].x, 0.5f + points[count-1].y);
|
|
|
|
#else
|
|
|
|
/* Linux seems to leave the right-most or bottom-most point open */
|
|
|
|
x1 = points[0].x;
|
|
|
|
y1 = points[0].y;
|
|
|
|
x2 = points[count-1].x;
|
|
|
|
y2 = points[count-1].y;
|
|
|
|
|
|
|
|
if (x1 > x2) {
|
|
|
|
data->glVertex2f(0.5f + x1, 0.5f + y1);
|
|
|
|
} else if (x2 > x1) {
|
|
|
|
data->glVertex2f(0.5f + x2, 0.5f + y2);
|
|
|
|
}
|
|
|
|
if (y1 > y2) {
|
|
|
|
data->glVertex2f(0.5f + x1, 0.5f + y1);
|
|
|
|
} else if (y2 > y1) {
|
|
|
|
data->glVertex2f(0.5f + x2, 0.5f + y2);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
data->glEnd();
|
|
|
|
}
|
|
|
|
return GL_CheckError("", renderer);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_RenderFillRects(SDL_Renderer * renderer, const SDL_FRect * rects, int count)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
GL_SetDrawingState(renderer);
|
|
|
|
|
|
|
|
for (i = 0; i < count; ++i) {
|
|
|
|
const SDL_FRect *rect = &rects[i];
|
|
|
|
|
|
|
|
data->glRectf(rect->x, rect->y, rect->x + rect->w, rect->y + rect->h);
|
|
|
|
}
|
|
|
|
return GL_CheckError("", renderer);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_SetupCopy(SDL_Renderer * renderer, SDL_Texture * texture)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata;
|
|
|
|
|
|
|
|
data->glEnable(texturedata->type);
|
|
|
|
if (texturedata->yuv) {
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE2_ARB);
|
|
|
|
data->glBindTexture(texturedata->type, texturedata->vtexture);
|
|
|
|
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE1_ARB);
|
|
|
|
data->glBindTexture(texturedata->type, texturedata->utexture);
|
|
|
|
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE0_ARB);
|
|
|
|
}
|
|
|
|
if (texturedata->nv12) {
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE1_ARB);
|
|
|
|
data->glBindTexture(texturedata->type, texturedata->utexture);
|
|
|
|
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE0_ARB);
|
|
|
|
}
|
|
|
|
data->glBindTexture(texturedata->type, texturedata->texture);
|
|
|
|
|
|
|
|
if (texture->modMode) {
|
|
|
|
GL_SetColor(data, texture->r, texture->g, texture->b, texture->a);
|
|
|
|
} else {
|
|
|
|
GL_SetColor(data, 255, 255, 255, 255);
|
|
|
|
}
|
|
|
|
|
|
|
|
GL_SetBlendMode(data, texture->blendMode);
|
|
|
|
|
|
|
|
if (texturedata->yuv) {
|
|
|
|
GL_SetShader(data, SHADER_YUV);
|
|
|
|
} else if (texturedata->nv12) {
|
|
|
|
if (texture->format == SDL_PIXELFORMAT_NV12) {
|
|
|
|
GL_SetShader(data, SHADER_NV12);
|
|
|
|
} else {
|
|
|
|
GL_SetShader(data, SHADER_NV21);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
GL_SetShader(data, SHADER_RGB);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
|
|
|
|
const SDL_Rect * srcrect, const SDL_FRect * dstrect)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata;
|
|
|
|
GLfloat minx, miny, maxx, maxy;
|
|
|
|
GLfloat minu, maxu, minv, maxv;
|
|
|
|
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
|
|
|
if (GL_SetupCopy(renderer, texture) < 0) {
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
minx = dstrect->x;
|
|
|
|
miny = dstrect->y;
|
|
|
|
maxx = dstrect->x + dstrect->w;
|
|
|
|
maxy = dstrect->y + dstrect->h;
|
|
|
|
|
|
|
|
minu = (GLfloat) srcrect->x / texture->w;
|
|
|
|
minu *= texturedata->texw;
|
|
|
|
maxu = (GLfloat) (srcrect->x + srcrect->w) / texture->w;
|
|
|
|
maxu *= texturedata->texw;
|
|
|
|
minv = (GLfloat) srcrect->y / texture->h;
|
|
|
|
minv *= texturedata->texh;
|
|
|
|
maxv = (GLfloat) (srcrect->y + srcrect->h) / texture->h;
|
|
|
|
maxv *= texturedata->texh;
|
|
|
|
|
|
|
|
data->glBegin(GL_TRIANGLE_STRIP);
|
|
|
|
data->glTexCoord2f(minu, minv);
|
|
|
|
data->glVertex2f(minx, miny);
|
|
|
|
data->glTexCoord2f(maxu, minv);
|
|
|
|
data->glVertex2f(maxx, miny);
|
|
|
|
data->glTexCoord2f(minu, maxv);
|
|
|
|
data->glVertex2f(minx, maxy);
|
|
|
|
data->glTexCoord2f(maxu, maxv);
|
|
|
|
data->glVertex2f(maxx, maxy);
|
|
|
|
data->glEnd();
|
|
|
|
|
|
|
|
data->glDisable(texturedata->type);
|
|
|
|
|
|
|
|
return GL_CheckError("", renderer);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_RenderCopyEx(SDL_Renderer * renderer, SDL_Texture * texture,
|
|
|
|
const SDL_Rect * srcrect, const SDL_FRect * dstrect,
|
|
|
|
const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata;
|
|
|
|
GLfloat minx, miny, maxx, maxy;
|
|
|
|
GLfloat centerx, centery;
|
|
|
|
GLfloat minu, maxu, minv, maxv;
|
|
|
|
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
|
|
|
if (GL_SetupCopy(renderer, texture) < 0) {
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
centerx = center->x;
|
|
|
|
centery = center->y;
|
|
|
|
|
|
|
|
if (flip & SDL_FLIP_HORIZONTAL) {
|
|
|
|
minx = dstrect->w - centerx;
|
|
|
|
maxx = -centerx;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
minx = -centerx;
|
|
|
|
maxx = dstrect->w - centerx;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (flip & SDL_FLIP_VERTICAL) {
|
|
|
|
miny = dstrect->h - centery;
|
|
|
|
maxy = -centery;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
miny = -centery;
|
|
|
|
maxy = dstrect->h - centery;
|
|
|
|
}
|
|
|
|
|
|
|
|
minu = (GLfloat) srcrect->x / texture->w;
|
|
|
|
minu *= texturedata->texw;
|
|
|
|
maxu = (GLfloat) (srcrect->x + srcrect->w) / texture->w;
|
|
|
|
maxu *= texturedata->texw;
|
|
|
|
minv = (GLfloat) srcrect->y / texture->h;
|
|
|
|
minv *= texturedata->texh;
|
|
|
|
maxv = (GLfloat) (srcrect->y + srcrect->h) / texture->h;
|
|
|
|
maxv *= texturedata->texh;
|
|
|
|
|
|
|
|
/* Translate to flip, rotate, translate to position */
|
|
|
|
data->glPushMatrix();
|
|
|
|
data->glTranslatef((GLfloat)dstrect->x + centerx, (GLfloat)dstrect->y + centery, (GLfloat)0.0);
|
|
|
|
data->glRotated(angle, (GLdouble)0.0, (GLdouble)0.0, (GLdouble)1.0);
|
|
|
|
|
|
|
|
data->glBegin(GL_TRIANGLE_STRIP);
|
|
|
|
data->glTexCoord2f(minu, minv);
|
|
|
|
data->glVertex2f(minx, miny);
|
|
|
|
data->glTexCoord2f(maxu, minv);
|
|
|
|
data->glVertex2f(maxx, miny);
|
|
|
|
data->glTexCoord2f(minu, maxv);
|
|
|
|
data->glVertex2f(minx, maxy);
|
|
|
|
data->glTexCoord2f(maxu, maxv);
|
|
|
|
data->glVertex2f(maxx, maxy);
|
|
|
|
data->glEnd();
|
|
|
|
data->glPopMatrix();
|
|
|
|
|
|
|
|
data->glDisable(texturedata->type);
|
|
|
|
|
|
|
|
return GL_CheckError("", renderer);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
|
|
|
|
Uint32 pixel_format, void * pixels, int pitch)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
2016-10-02 22:32:35 +02:00
|
|
|
Uint32 temp_format = renderer->target ? renderer->target->format : SDL_PIXELFORMAT_ARGB8888;
|
2015-06-21 17:33:46 +02:00
|
|
|
void *temp_pixels;
|
|
|
|
int temp_pitch;
|
|
|
|
GLint internalFormat;
|
|
|
|
GLenum format, type;
|
|
|
|
Uint8 *src, *dst, *tmp;
|
|
|
|
int w, h, length, rows;
|
|
|
|
int status;
|
|
|
|
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
2016-11-25 03:41:09 +01:00
|
|
|
if (!convert_format(data, temp_format, &internalFormat, &format, &type)) {
|
|
|
|
return SDL_SetError("Texture format %s not supported by OpenGL",
|
|
|
|
SDL_GetPixelFormatName(temp_format));
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!rect->w || !rect->h) {
|
|
|
|
return 0; /* nothing to do. */
|
|
|
|
}
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
temp_pitch = rect->w * SDL_BYTESPERPIXEL(temp_format);
|
|
|
|
temp_pixels = SDL_malloc(rect->h * temp_pitch);
|
|
|
|
if (!temp_pixels) {
|
|
|
|
return SDL_OutOfMemory();
|
|
|
|
}
|
|
|
|
|
|
|
|
SDL_GetRendererOutputSize(renderer, &w, &h);
|
|
|
|
|
|
|
|
data->glPixelStorei(GL_PACK_ALIGNMENT, 1);
|
|
|
|
data->glPixelStorei(GL_PACK_ROW_LENGTH,
|
|
|
|
(temp_pitch / SDL_BYTESPERPIXEL(temp_format)));
|
|
|
|
|
2016-10-01 20:34:04 +02:00
|
|
|
data->glReadPixels(rect->x, renderer->target ? rect->y : (h-rect->y)-rect->h,
|
|
|
|
rect->w, rect->h, format, type, temp_pixels);
|
2015-06-21 17:33:46 +02:00
|
|
|
|
|
|
|
if (GL_CheckError("glReadPixels()", renderer) < 0) {
|
|
|
|
SDL_free(temp_pixels);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2016-10-01 20:34:04 +02:00
|
|
|
/* Flip the rows to be top-down if necessary */
|
|
|
|
if (!renderer->target) {
|
|
|
|
length = rect->w * SDL_BYTESPERPIXEL(temp_format);
|
|
|
|
src = (Uint8*)temp_pixels + (rect->h-1)*temp_pitch;
|
|
|
|
dst = (Uint8*)temp_pixels;
|
|
|
|
tmp = SDL_stack_alloc(Uint8, length);
|
|
|
|
rows = rect->h / 2;
|
|
|
|
while (rows--) {
|
|
|
|
SDL_memcpy(tmp, dst, length);
|
|
|
|
SDL_memcpy(dst, src, length);
|
|
|
|
SDL_memcpy(src, tmp, length);
|
|
|
|
dst += temp_pitch;
|
|
|
|
src -= temp_pitch;
|
|
|
|
}
|
|
|
|
SDL_stack_free(tmp);
|
|
|
|
}
|
2015-06-21 17:33:46 +02:00
|
|
|
|
|
|
|
status = SDL_ConvertPixels(rect->w, rect->h,
|
|
|
|
temp_format, temp_pixels, temp_pitch,
|
|
|
|
pixel_format, pixels, pitch);
|
|
|
|
SDL_free(temp_pixels);
|
|
|
|
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
GL_RenderPresent(SDL_Renderer * renderer)
|
|
|
|
{
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
|
|
|
SDL_GL_SwapWindow(renderer->window);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
GL_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
|
|
|
|
{
|
|
|
|
GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
|
|
|
|
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
|
|
|
|
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
|
|
|
if (!data) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if (data->texture) {
|
|
|
|
renderdata->glDeleteTextures(1, &data->texture);
|
|
|
|
}
|
|
|
|
if (data->yuv) {
|
|
|
|
renderdata->glDeleteTextures(1, &data->utexture);
|
|
|
|
renderdata->glDeleteTextures(1, &data->vtexture);
|
|
|
|
}
|
|
|
|
SDL_free(data->pixels);
|
|
|
|
SDL_free(data);
|
|
|
|
texture->driverdata = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
GL_DestroyRenderer(SDL_Renderer * renderer)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
|
|
|
|
if (data) {
|
2017-05-19 03:00:11 +02:00
|
|
|
if (data->context != NULL) {
|
|
|
|
/* make sure we delete the right resources! */
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
}
|
|
|
|
|
2015-06-21 17:33:46 +02:00
|
|
|
GL_ClearErrors(renderer);
|
|
|
|
if (data->GL_ARB_debug_output_supported) {
|
|
|
|
PFNGLDEBUGMESSAGECALLBACKARBPROC glDebugMessageCallbackARBFunc = (PFNGLDEBUGMESSAGECALLBACKARBPROC) SDL_GL_GetProcAddress("glDebugMessageCallbackARB");
|
|
|
|
|
|
|
|
/* Uh oh, we don't have a safe way of removing ourselves from the callback chain, if it changed after we set our callback. */
|
|
|
|
/* For now, just always replace the callback with the original one */
|
|
|
|
glDebugMessageCallbackARBFunc(data->next_error_callback, data->next_error_userparam);
|
|
|
|
}
|
|
|
|
if (data->shaders) {
|
|
|
|
GL_DestroyShaderContext(data->shaders);
|
|
|
|
}
|
|
|
|
if (data->context) {
|
|
|
|
while (data->framebuffers) {
|
|
|
|
GL_FBOList *nextnode = data->framebuffers->next;
|
|
|
|
/* delete the framebuffer object */
|
|
|
|
data->glDeleteFramebuffersEXT(1, &data->framebuffers->FBO);
|
|
|
|
GL_CheckError("", renderer);
|
|
|
|
SDL_free(data->framebuffers);
|
|
|
|
data->framebuffers = nextnode;
|
|
|
|
}
|
|
|
|
SDL_GL_DeleteContext(data->context);
|
|
|
|
}
|
|
|
|
SDL_free(data);
|
|
|
|
}
|
|
|
|
SDL_free(renderer);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_BindTexture (SDL_Renderer * renderer, SDL_Texture *texture, float *texw, float *texh)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata;
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
|
|
|
data->glEnable(texturedata->type);
|
|
|
|
if (texturedata->yuv) {
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE2_ARB);
|
|
|
|
data->glBindTexture(texturedata->type, texturedata->vtexture);
|
|
|
|
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE1_ARB);
|
|
|
|
data->glBindTexture(texturedata->type, texturedata->utexture);
|
|
|
|
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE0_ARB);
|
|
|
|
}
|
|
|
|
data->glBindTexture(texturedata->type, texturedata->texture);
|
|
|
|
|
|
|
|
if(texw) *texw = (float)texturedata->texw;
|
|
|
|
if(texh) *texh = (float)texturedata->texh;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
GL_UnbindTexture (SDL_Renderer * renderer, SDL_Texture *texture)
|
|
|
|
{
|
|
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata;
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
|
|
|
|
if (texturedata->yuv) {
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE2_ARB);
|
|
|
|
data->glDisable(texturedata->type);
|
|
|
|
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE1_ARB);
|
|
|
|
data->glDisable(texturedata->type);
|
|
|
|
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE0_ARB);
|
|
|
|
}
|
|
|
|
|
|
|
|
data->glDisable(texturedata->type);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* SDL_VIDEO_RENDER_OGL && !SDL_RENDER_DISABLED */
|
|
|
|
|
|
|
|
/* vi: set ts=4 sw=4 expandtab: */
|