mirror of
https://github.com/Relintai/sdl2_frt.git
synced 2025-03-12 04:01:17 +01:00
1784 lines
61 KiB
C
1784 lines
61 KiB
C
/*
|
|
Simple DirectMedia Layer
|
|
Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any damages
|
|
arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any purpose,
|
|
including commercial applications, and to alter it and redistribute it
|
|
freely, subject to the following restrictions:
|
|
|
|
1. The origin of this software must not be misrepresented; you must not
|
|
claim that you wrote the original software. If you use this software
|
|
in a product, an acknowledgment in the product documentation would be
|
|
appreciated but is not required.
|
|
2. Altered source versions must be plainly marked as such, and must not be
|
|
misrepresented as being the original software.
|
|
3. This notice may not be removed or altered from any source distribution.
|
|
*/
|
|
#include "../../SDL_internal.h"
|
|
|
|
#if SDL_VIDEO_RENDER_OGL && !SDL_RENDER_DISABLED
|
|
|
|
#include "SDL_hints.h"
|
|
#include "SDL_assert.h"
|
|
#include "SDL_opengl.h"
|
|
#include "../SDL_sysrender.h"
|
|
#include "SDL_shaders_gl.h"
|
|
|
|
#ifdef __MACOSX__
|
|
#include <OpenGL/OpenGL.h>
|
|
#endif
|
|
|
|
/* To prevent unnecessary window recreation,
|
|
* these should match the defaults selected in SDL_GL_ResetAttributes
|
|
*/
|
|
|
|
#define RENDERER_CONTEXT_MAJOR 2
|
|
#define RENDERER_CONTEXT_MINOR 1
|
|
|
|
/* OpenGL renderer implementation */
|
|
|
|
/* Details on optimizing the texture path on Mac OS X:
|
|
http://developer.apple.com/library/mac/#documentation/GraphicsImaging/Conceptual/OpenGL-MacProgGuide/opengl_texturedata/opengl_texturedata.html
|
|
*/
|
|
|
|
/* Used to re-create the window with OpenGL capability */
|
|
extern int SDL_RecreateWindow(SDL_Window * window, Uint32 flags);
|
|
|
|
static const float inv255f = 1.0f / 255.0f;
|
|
|
|
typedef struct GL_FBOList GL_FBOList;
|
|
|
|
struct GL_FBOList
|
|
{
|
|
Uint32 w, h;
|
|
GLuint FBO;
|
|
GL_FBOList *next;
|
|
};
|
|
|
|
typedef struct
|
|
{
|
|
SDL_bool viewport_dirty;
|
|
SDL_Rect viewport;
|
|
SDL_Texture *texture;
|
|
SDL_Texture *target;
|
|
int drawablew;
|
|
int drawableh;
|
|
SDL_BlendMode blend;
|
|
GL_Shader shader;
|
|
SDL_bool cliprect_enabled_dirty;
|
|
SDL_bool cliprect_enabled;
|
|
SDL_bool cliprect_dirty;
|
|
SDL_Rect cliprect;
|
|
SDL_bool texturing;
|
|
Uint32 color;
|
|
Uint32 clear_color;
|
|
} GL_DrawStateCache;
|
|
|
|
typedef struct
|
|
{
|
|
SDL_GLContext context;
|
|
|
|
SDL_bool debug_enabled;
|
|
SDL_bool GL_ARB_debug_output_supported;
|
|
int errors;
|
|
char **error_messages;
|
|
GLDEBUGPROCARB next_error_callback;
|
|
GLvoid *next_error_userparam;
|
|
|
|
GLenum textype;
|
|
|
|
SDL_bool GL_ARB_texture_non_power_of_two_supported;
|
|
SDL_bool GL_ARB_texture_rectangle_supported;
|
|
SDL_bool GL_EXT_framebuffer_object_supported;
|
|
GL_FBOList *framebuffers;
|
|
|
|
/* OpenGL functions */
|
|
#define SDL_PROC(ret,func,params) ret (APIENTRY *func) params;
|
|
#include "SDL_glfuncs.h"
|
|
#undef SDL_PROC
|
|
|
|
/* Multitexture support */
|
|
SDL_bool GL_ARB_multitexture_supported;
|
|
PFNGLACTIVETEXTUREARBPROC glActiveTextureARB;
|
|
GLint num_texture_units;
|
|
|
|
PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT;
|
|
PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT;
|
|
PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT;
|
|
PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT;
|
|
PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT;
|
|
|
|
/* Shader support */
|
|
GL_ShaderContext *shaders;
|
|
|
|
GL_DrawStateCache drawstate;
|
|
} GL_RenderData;
|
|
|
|
typedef struct
|
|
{
|
|
GLuint texture;
|
|
GLfloat texw;
|
|
GLfloat texh;
|
|
GLenum format;
|
|
GLenum formattype;
|
|
void *pixels;
|
|
int pitch;
|
|
SDL_Rect locked_rect;
|
|
|
|
/* YUV texture support */
|
|
SDL_bool yuv;
|
|
SDL_bool nv12;
|
|
GLuint utexture;
|
|
GLuint vtexture;
|
|
|
|
GL_FBOList *fbo;
|
|
} GL_TextureData;
|
|
|
|
SDL_FORCE_INLINE const char*
|
|
GL_TranslateError (GLenum error)
|
|
{
|
|
#define GL_ERROR_TRANSLATE(e) case e: return #e;
|
|
switch (error) {
|
|
GL_ERROR_TRANSLATE(GL_INVALID_ENUM)
|
|
GL_ERROR_TRANSLATE(GL_INVALID_VALUE)
|
|
GL_ERROR_TRANSLATE(GL_INVALID_OPERATION)
|
|
GL_ERROR_TRANSLATE(GL_OUT_OF_MEMORY)
|
|
GL_ERROR_TRANSLATE(GL_NO_ERROR)
|
|
GL_ERROR_TRANSLATE(GL_STACK_OVERFLOW)
|
|
GL_ERROR_TRANSLATE(GL_STACK_UNDERFLOW)
|
|
GL_ERROR_TRANSLATE(GL_TABLE_TOO_LARGE)
|
|
default:
|
|
return "UNKNOWN";
|
|
}
|
|
#undef GL_ERROR_TRANSLATE
|
|
}
|
|
|
|
SDL_FORCE_INLINE void
|
|
GL_ClearErrors(SDL_Renderer *renderer)
|
|
{
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
if (!data->debug_enabled)
|
|
{
|
|
return;
|
|
}
|
|
if (data->GL_ARB_debug_output_supported) {
|
|
if (data->errors) {
|
|
int i;
|
|
for (i = 0; i < data->errors; ++i) {
|
|
SDL_free(data->error_messages[i]);
|
|
}
|
|
SDL_free(data->error_messages);
|
|
|
|
data->errors = 0;
|
|
data->error_messages = NULL;
|
|
}
|
|
} else if (data->glGetError != NULL) {
|
|
while (data->glGetError() != GL_NO_ERROR) {
|
|
/* continue; */
|
|
}
|
|
}
|
|
}
|
|
|
|
SDL_FORCE_INLINE int
|
|
GL_CheckAllErrors (const char *prefix, SDL_Renderer *renderer, const char *file, int line, const char *function)
|
|
{
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
int ret = 0;
|
|
|
|
if (!data->debug_enabled)
|
|
{
|
|
return 0;
|
|
}
|
|
if (data->GL_ARB_debug_output_supported) {
|
|
if (data->errors) {
|
|
int i;
|
|
for (i = 0; i < data->errors; ++i) {
|
|
SDL_SetError("%s: %s (%d): %s %s", prefix, file, line, function, data->error_messages[i]);
|
|
ret = -1;
|
|
}
|
|
GL_ClearErrors(renderer);
|
|
}
|
|
} else {
|
|
/* check gl errors (can return multiple errors) */
|
|
for (;;) {
|
|
GLenum error = data->glGetError();
|
|
if (error != GL_NO_ERROR) {
|
|
if (prefix == NULL || prefix[0] == '\0') {
|
|
prefix = "generic";
|
|
}
|
|
SDL_SetError("%s: %s (%d): %s %s (0x%X)", prefix, file, line, function, GL_TranslateError(error), error);
|
|
ret = -1;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#if 0
|
|
#define GL_CheckError(prefix, renderer)
|
|
#else
|
|
#define GL_CheckError(prefix, renderer) GL_CheckAllErrors(prefix, renderer, SDL_FILE, SDL_LINE, SDL_FUNCTION)
|
|
#endif
|
|
|
|
static int
|
|
GL_LoadFunctions(GL_RenderData * data)
|
|
{
|
|
#ifdef __SDL_NOGETPROCADDR__
|
|
#define SDL_PROC(ret,func,params) data->func=func;
|
|
#else
|
|
int retval = 0;
|
|
#define SDL_PROC(ret,func,params) \
|
|
do { \
|
|
data->func = SDL_GL_GetProcAddress(#func); \
|
|
if ( ! data->func ) { \
|
|
retval = SDL_SetError("Couldn't load GL function %s: %s", #func, SDL_GetError()); \
|
|
} \
|
|
} while ( 0 );
|
|
#endif /* __SDL_NOGETPROCADDR__ */
|
|
|
|
#include "SDL_glfuncs.h"
|
|
#undef SDL_PROC
|
|
return retval;
|
|
}
|
|
|
|
static int
|
|
GL_ActivateRenderer(SDL_Renderer * renderer)
|
|
{
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
if (SDL_GL_GetCurrentContext() != data->context) {
|
|
if (SDL_GL_MakeCurrent(renderer->window, data->context) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
GL_ClearErrors(renderer);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void APIENTRY
|
|
GL_HandleDebugMessage(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const char *message, const void *userParam)
|
|
{
|
|
SDL_Renderer *renderer = (SDL_Renderer *) userParam;
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
|
|
if (type == GL_DEBUG_TYPE_ERROR_ARB) {
|
|
/* Record this error */
|
|
int errors = data->errors + 1;
|
|
char **error_messages = SDL_realloc(data->error_messages, errors * sizeof(*data->error_messages));
|
|
if (error_messages) {
|
|
data->errors = errors;
|
|
data->error_messages = error_messages;
|
|
data->error_messages[data->errors-1] = SDL_strdup(message);
|
|
}
|
|
}
|
|
|
|
/* If there's another error callback, pass it along, otherwise log it */
|
|
if (data->next_error_callback) {
|
|
data->next_error_callback(source, type, id, severity, length, message, data->next_error_userparam);
|
|
} else {
|
|
if (type == GL_DEBUG_TYPE_ERROR_ARB) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_RENDER, "%s", message);
|
|
} else {
|
|
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;
|
|
}
|
|
|
|
static int
|
|
GL_GetOutputSize(SDL_Renderer * renderer, int *w, int *h)
|
|
{
|
|
SDL_GL_GetDrawableSize(renderer->window, w, h);
|
|
return 0;
|
|
}
|
|
|
|
static GLenum GetBlendFunc(SDL_BlendFactor factor)
|
|
{
|
|
switch (factor) {
|
|
case SDL_BLENDFACTOR_ZERO:
|
|
return GL_ZERO;
|
|
case SDL_BLENDFACTOR_ONE:
|
|
return GL_ONE;
|
|
case SDL_BLENDFACTOR_SRC_COLOR:
|
|
return GL_SRC_COLOR;
|
|
case SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR:
|
|
return GL_ONE_MINUS_SRC_COLOR;
|
|
case SDL_BLENDFACTOR_SRC_ALPHA:
|
|
return GL_SRC_ALPHA;
|
|
case SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA:
|
|
return GL_ONE_MINUS_SRC_ALPHA;
|
|
case SDL_BLENDFACTOR_DST_COLOR:
|
|
return GL_DST_COLOR;
|
|
case SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR:
|
|
return GL_ONE_MINUS_DST_COLOR;
|
|
case SDL_BLENDFACTOR_DST_ALPHA:
|
|
return GL_DST_ALPHA;
|
|
case SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA:
|
|
return GL_ONE_MINUS_DST_ALPHA;
|
|
default:
|
|
return GL_INVALID_ENUM;
|
|
}
|
|
}
|
|
|
|
static GLenum GetBlendEquation(SDL_BlendOperation operation)
|
|
{
|
|
switch (operation) {
|
|
case SDL_BLENDOPERATION_ADD:
|
|
return GL_FUNC_ADD;
|
|
case SDL_BLENDOPERATION_SUBTRACT:
|
|
return GL_FUNC_SUBTRACT;
|
|
case SDL_BLENDOPERATION_REV_SUBTRACT:
|
|
return GL_FUNC_REVERSE_SUBTRACT;
|
|
default:
|
|
return GL_INVALID_ENUM;
|
|
}
|
|
}
|
|
|
|
static SDL_bool
|
|
GL_SupportsBlendMode(SDL_Renderer * renderer, SDL_BlendMode blendMode)
|
|
{
|
|
SDL_BlendFactor srcColorFactor = SDL_GetBlendModeSrcColorFactor(blendMode);
|
|
SDL_BlendFactor srcAlphaFactor = SDL_GetBlendModeSrcAlphaFactor(blendMode);
|
|
SDL_BlendOperation colorOperation = SDL_GetBlendModeColorOperation(blendMode);
|
|
SDL_BlendFactor dstColorFactor = SDL_GetBlendModeDstColorFactor(blendMode);
|
|
SDL_BlendFactor dstAlphaFactor = SDL_GetBlendModeDstAlphaFactor(blendMode);
|
|
SDL_BlendOperation alphaOperation = SDL_GetBlendModeAlphaOperation(blendMode);
|
|
|
|
if (GetBlendFunc(srcColorFactor) == GL_INVALID_ENUM ||
|
|
GetBlendFunc(srcAlphaFactor) == GL_INVALID_ENUM ||
|
|
GetBlendEquation(colorOperation) == GL_INVALID_ENUM ||
|
|
GetBlendFunc(dstColorFactor) == GL_INVALID_ENUM ||
|
|
GetBlendFunc(dstAlphaFactor) == GL_INVALID_ENUM ||
|
|
GetBlendEquation(alphaOperation) == GL_INVALID_ENUM) {
|
|
return SDL_FALSE;
|
|
}
|
|
if (colorOperation != alphaOperation) {
|
|
return SDL_FALSE;
|
|
}
|
|
return SDL_TRUE;
|
|
}
|
|
|
|
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:
|
|
case SDL_PIXELFORMAT_RGB888:
|
|
*internalFormat = GL_RGBA8;
|
|
*format = GL_BGRA;
|
|
*type = GL_UNSIGNED_INT_8_8_8_8_REV;
|
|
break;
|
|
case SDL_PIXELFORMAT_ABGR8888:
|
|
case SDL_PIXELFORMAT_BGR888:
|
|
*internalFormat = GL_RGBA8;
|
|
*format = GL_RGBA;
|
|
*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 int
|
|
GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
|
|
{
|
|
GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
|
|
const GLenum textype = renderdata->textype;
|
|
GL_TextureData *data;
|
|
GLint internalFormat;
|
|
GLenum format, type;
|
|
int texture_w, texture_h;
|
|
GLenum scaleMode;
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
renderdata->drawstate.texture = NULL; /* we trash this state. */
|
|
|
|
if (texture->access == SDL_TEXTUREACCESS_TARGET &&
|
|
!renderdata->GL_EXT_framebuffer_object_supported) {
|
|
return SDL_SetError("Render targets not supported by OpenGL");
|
|
}
|
|
|
|
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 + 1) / 2) * ((data->pitch + 1) / 2);
|
|
}
|
|
if (texture->format == SDL_PIXELFORMAT_NV12 ||
|
|
texture->format == SDL_PIXELFORMAT_NV21) {
|
|
/* Need to add size for the U/V plane */
|
|
size += 2 * ((texture->h + 1) / 2) * ((data->pitch + 1) / 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) {
|
|
texture_w = texture->w;
|
|
texture_h = texture->h;
|
|
data->texw = 1.0f;
|
|
data->texh = 1.0f;
|
|
} else if (renderdata->GL_ARB_texture_rectangle_supported) {
|
|
texture_w = texture->w;
|
|
texture_h = texture->h;
|
|
data->texw = (GLfloat) texture_w;
|
|
data->texh = (GLfloat) texture_h;
|
|
} else {
|
|
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 = (texture->scaleMode == SDL_ScaleModeNearest) ? GL_NEAREST : GL_LINEAR;
|
|
renderdata->glEnable(textype);
|
|
renderdata->glBindTexture(textype, data->texture);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER, scaleMode);
|
|
renderdata->glTexParameteri(textype, 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 (textype != GL_TEXTURE_RECTANGLE_ARB) {
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_WRAP_S,
|
|
GL_CLAMP_TO_EDGE);
|
|
renderdata->glTexParameteri(textype, 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(textype, GL_TEXTURE_STORAGE_HINT_APPLE,
|
|
GL_STORAGE_SHARED_APPLE);
|
|
} else {
|
|
renderdata->glTexParameteri(textype, 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(textype, 0, internalFormat, texture_w,
|
|
texture_h, 0, format, type, data->pixels);
|
|
renderdata->glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_FALSE);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
renderdata->glTexImage2D(textype, 0, internalFormat, texture_w,
|
|
texture_h, 0, format, type, NULL);
|
|
}
|
|
renderdata->glDisable(textype);
|
|
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->glBindTexture(textype, data->utexture);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER,
|
|
scaleMode);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MAG_FILTER,
|
|
scaleMode);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_WRAP_S,
|
|
GL_CLAMP_TO_EDGE);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_WRAP_T,
|
|
GL_CLAMP_TO_EDGE);
|
|
renderdata->glTexImage2D(textype, 0, internalFormat, (texture_w+1)/2,
|
|
(texture_h+1)/2, 0, format, type, NULL);
|
|
|
|
renderdata->glBindTexture(textype, data->vtexture);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER,
|
|
scaleMode);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MAG_FILTER,
|
|
scaleMode);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_WRAP_S,
|
|
GL_CLAMP_TO_EDGE);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_WRAP_T,
|
|
GL_CLAMP_TO_EDGE);
|
|
renderdata->glTexImage2D(textype, 0, internalFormat, (texture_w+1)/2,
|
|
(texture_h+1)/2, 0, format, type, NULL);
|
|
}
|
|
|
|
if (texture->format == SDL_PIXELFORMAT_NV12 ||
|
|
texture->format == SDL_PIXELFORMAT_NV21) {
|
|
data->nv12 = SDL_TRUE;
|
|
|
|
renderdata->glGenTextures(1, &data->utexture);
|
|
renderdata->glBindTexture(textype, data->utexture);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER,
|
|
scaleMode);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MAG_FILTER,
|
|
scaleMode);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_WRAP_S,
|
|
GL_CLAMP_TO_EDGE);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_WRAP_T,
|
|
GL_CLAMP_TO_EDGE);
|
|
renderdata->glTexImage2D(textype, 0, GL_LUMINANCE_ALPHA, (texture_w+1)/2,
|
|
(texture_h+1)/2, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, NULL);
|
|
}
|
|
|
|
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;
|
|
const GLenum textype = renderdata->textype;
|
|
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->drawstate.texture = NULL; /* we trash this state. */
|
|
|
|
renderdata->glBindTexture(textype, data->texture);
|
|
renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, (pitch / texturebpp));
|
|
renderdata->glTexSubImage2D(textype, 0, rect->x, rect->y, rect->w,
|
|
rect->h, data->format, data->formattype,
|
|
pixels);
|
|
if (data->yuv) {
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, ((pitch + 1) / 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(textype, data->vtexture);
|
|
} else {
|
|
renderdata->glBindTexture(textype, data->utexture);
|
|
}
|
|
renderdata->glTexSubImage2D(textype, 0, rect->x/2, rect->y/2,
|
|
(rect->w+1)/2, (rect->h+1)/2,
|
|
data->format, data->formattype, pixels);
|
|
|
|
/* Skip to the correct offset into the next texture */
|
|
pixels = (const void*)((const Uint8*)pixels + ((rect->h + 1) / 2) * ((pitch + 1) / 2));
|
|
if (texture->format == SDL_PIXELFORMAT_YV12) {
|
|
renderdata->glBindTexture(textype, data->utexture);
|
|
} else {
|
|
renderdata->glBindTexture(textype, data->vtexture);
|
|
}
|
|
renderdata->glTexSubImage2D(textype, 0, rect->x/2, rect->y/2,
|
|
(rect->w+1)/2, (rect->h+1)/2,
|
|
data->format, data->formattype, pixels);
|
|
}
|
|
|
|
if (data->nv12) {
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, ((pitch + 1) / 2));
|
|
|
|
/* Skip to the correct offset into the next texture */
|
|
pixels = (const void*)((const Uint8*)pixels + rect->h * pitch);
|
|
renderdata->glBindTexture(textype, data->utexture);
|
|
renderdata->glTexSubImage2D(textype, 0, rect->x/2, rect->y/2,
|
|
(rect->w + 1)/2, (rect->h + 1)/2,
|
|
GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, pixels);
|
|
}
|
|
|
|
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;
|
|
const GLenum textype = renderdata->textype;
|
|
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
renderdata->drawstate.texture = NULL; /* we trash this state. */
|
|
|
|
renderdata->glBindTexture(textype, data->texture);
|
|
renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, Ypitch);
|
|
renderdata->glTexSubImage2D(textype, 0, rect->x, rect->y, rect->w,
|
|
rect->h, data->format, data->formattype,
|
|
Yplane);
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, Upitch);
|
|
renderdata->glBindTexture(textype, data->utexture);
|
|
renderdata->glTexSubImage2D(textype, 0, rect->x/2, rect->y/2,
|
|
(rect->w + 1)/2, (rect->h + 1)/2,
|
|
data->format, data->formattype, Uplane);
|
|
|
|
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, Vpitch);
|
|
renderdata->glBindTexture(textype, data->vtexture);
|
|
renderdata->glTexSubImage2D(textype, 0, rect->x/2, rect->y/2,
|
|
(rect->w + 1)/2, (rect->h + 1)/2,
|
|
data->format, data->formattype, Vplane);
|
|
|
|
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 void
|
|
GL_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture, SDL_ScaleMode scaleMode)
|
|
{
|
|
GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
|
|
const GLenum textype = renderdata->textype;
|
|
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
|
|
GLenum glScaleMode = (scaleMode == SDL_ScaleModeNearest) ? GL_NEAREST : GL_LINEAR;
|
|
|
|
renderdata->glBindTexture(textype, data->texture);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER, glScaleMode);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MAG_FILTER, glScaleMode);
|
|
|
|
if (texture->format == SDL_PIXELFORMAT_YV12 ||
|
|
texture->format == SDL_PIXELFORMAT_IYUV) {
|
|
renderdata->glBindTexture(textype, data->utexture);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER, glScaleMode);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MAG_FILTER, glScaleMode);
|
|
|
|
renderdata->glBindTexture(textype, data->vtexture);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER, glScaleMode);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MAG_FILTER, glScaleMode);
|
|
}
|
|
|
|
if (texture->format == SDL_PIXELFORMAT_NV12 ||
|
|
texture->format == SDL_PIXELFORMAT_NV21) {
|
|
renderdata->glBindTexture(textype, data->utexture);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER, glScaleMode);
|
|
renderdata->glTexParameteri(textype, GL_TEXTURE_MAG_FILTER, glScaleMode);
|
|
}
|
|
}
|
|
|
|
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);
|
|
|
|
if (!data->GL_EXT_framebuffer_object_supported) {
|
|
return SDL_SetError("Render targets not supported by OpenGL");
|
|
}
|
|
|
|
data->drawstate.viewport_dirty = SDL_TRUE;
|
|
|
|
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, data->textype, 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;
|
|
}
|
|
|
|
/* !!! FIXME: all these Queue* calls set up the vertex buffer the way the immediate mode
|
|
!!! FIXME: renderer wants it, but this might want to operate differently if we move to
|
|
!!! FIXME: VBOs at some point. */
|
|
static int
|
|
GL_QueueSetViewport(SDL_Renderer * renderer, SDL_RenderCommand *cmd)
|
|
{
|
|
return 0; /* nothing to do in this backend. */
|
|
}
|
|
|
|
static int
|
|
GL_QueueDrawPoints(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPoint * points, int count)
|
|
{
|
|
GLfloat *verts = (GLfloat *) SDL_AllocateRenderVertices(renderer, count * 2 * sizeof (GLfloat), 0, &cmd->data.draw.first);
|
|
int i;
|
|
|
|
if (!verts) {
|
|
return -1;
|
|
}
|
|
|
|
cmd->data.draw.count = count;
|
|
for (i = 0; i < count; i++) {
|
|
*(verts++) = 0.5f + points[i].x;
|
|
*(verts++) = 0.5f + points[i].y;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
GL_QueueDrawLines(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPoint * points, int count)
|
|
{
|
|
int i;
|
|
const size_t vertlen = (sizeof (GLfloat) * 2) * count;
|
|
GLfloat *verts = (GLfloat *) SDL_AllocateRenderVertices(renderer, vertlen, 0, &cmd->data.draw.first);
|
|
if (!verts) {
|
|
return -1;
|
|
}
|
|
cmd->data.draw.count = count;
|
|
|
|
/* Offset to hit the center of the pixel. */
|
|
for (i = 0; i < count; i++) {
|
|
*(verts++) = 0.5f + points[i].x;
|
|
*(verts++) = 0.5f + points[i].y;
|
|
}
|
|
|
|
/* If the line segment is completely horizontal or vertical,
|
|
make it one pixel longer, to satisfy the diamond-exit rule.
|
|
We should probably do this for diagonal lines too, but we'd have to
|
|
do some trigonometry to figure out the correct pixel and generally
|
|
when we have problems with pixel perfection, it's for straight lines
|
|
that are missing a pixel that frames something and not arbitrary
|
|
angles. Maybe !!! FIXME for later, though. */
|
|
|
|
/* update the last line. */
|
|
verts -= 4;
|
|
{
|
|
const GLfloat xstart = verts[0];
|
|
const GLfloat ystart = verts[1];
|
|
const GLfloat xend = verts[2];
|
|
const GLfloat yend = verts[3];
|
|
|
|
if (ystart == yend) { /* horizontal line */
|
|
verts[2] += (xend > xstart) ? 1.0f : -1.0f;
|
|
} else if (xstart == xend) { /* vertical line */
|
|
verts[3] += (yend > ystart) ? 1.0f : -1.0f;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
GL_QueueFillRects(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FRect * rects, int count)
|
|
{
|
|
GLfloat *verts = (GLfloat *) SDL_AllocateRenderVertices(renderer, count * 4 * sizeof (GLfloat), 0, &cmd->data.draw.first);
|
|
int i;
|
|
|
|
if (!verts) {
|
|
return -1;
|
|
}
|
|
|
|
cmd->data.draw.count = count;
|
|
for (i = 0; i < count; i++) {
|
|
const SDL_FRect *rect = &rects[i];
|
|
*(verts++) = rect->x;
|
|
*(verts++) = rect->y;
|
|
*(verts++) = rect->x + rect->w;
|
|
*(verts++) = rect->y + rect->h;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
GL_QueueCopy(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * texture,
|
|
const SDL_Rect * srcrect, const SDL_FRect * dstrect)
|
|
{
|
|
GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata;
|
|
GLfloat minx, miny, maxx, maxy;
|
|
GLfloat minu, maxu, minv, maxv;
|
|
GLfloat *verts = (GLfloat *) SDL_AllocateRenderVertices(renderer, 8 * sizeof (GLfloat), 0, &cmd->data.draw.first);
|
|
|
|
if (!verts) {
|
|
return -1;
|
|
}
|
|
|
|
cmd->data.draw.count = 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;
|
|
|
|
cmd->data.draw.count = 1;
|
|
*(verts++) = minx;
|
|
*(verts++) = miny;
|
|
*(verts++) = maxx;
|
|
*(verts++) = maxy;
|
|
*(verts++) = minu;
|
|
*(verts++) = maxu;
|
|
*(verts++) = minv;
|
|
*(verts++) = maxv;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
GL_QueueCopyEx(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * texture,
|
|
const SDL_Rect * srcrect, const SDL_FRect * dstrect,
|
|
const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip)
|
|
{
|
|
GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata;
|
|
GLfloat minx, miny, maxx, maxy;
|
|
GLfloat centerx, centery;
|
|
GLfloat minu, maxu, minv, maxv;
|
|
GLfloat *verts = (GLfloat *) SDL_AllocateRenderVertices(renderer, 11 * sizeof (GLfloat), 0, &cmd->data.draw.first);
|
|
|
|
if (!verts) {
|
|
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;
|
|
|
|
cmd->data.draw.count = 1;
|
|
*(verts++) = minx;
|
|
*(verts++) = miny;
|
|
*(verts++) = maxx;
|
|
*(verts++) = maxy;
|
|
*(verts++) = minu;
|
|
*(verts++) = maxu;
|
|
*(verts++) = minv;
|
|
*(verts++) = maxv;
|
|
*(verts++) = (GLfloat) dstrect->x + centerx;
|
|
*(verts++) = (GLfloat) dstrect->y + centery;
|
|
*(verts++) = (GLfloat) angle;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
SetDrawState(GL_RenderData *data, const SDL_RenderCommand *cmd, const GL_Shader shader)
|
|
{
|
|
const SDL_BlendMode blend = cmd->data.draw.blend;
|
|
|
|
if (data->drawstate.viewport_dirty) {
|
|
const SDL_bool istarget = data->drawstate.target != NULL;
|
|
const SDL_Rect *viewport = &data->drawstate.viewport;
|
|
data->glMatrixMode(GL_PROJECTION);
|
|
data->glLoadIdentity();
|
|
data->glViewport(viewport->x,
|
|
istarget ? viewport->y : (data->drawstate.drawableh - viewport->y - viewport->h),
|
|
viewport->w, viewport->h);
|
|
if (viewport->w && viewport->h) {
|
|
data->glOrtho((GLdouble) 0, (GLdouble) viewport->w,
|
|
(GLdouble) istarget ? 0 : viewport->h,
|
|
(GLdouble) istarget ? viewport->h : 0,
|
|
0.0, 1.0);
|
|
}
|
|
data->glMatrixMode(GL_MODELVIEW);
|
|
data->drawstate.viewport_dirty = SDL_FALSE;
|
|
}
|
|
|
|
if (data->drawstate.cliprect_enabled_dirty) {
|
|
if (!data->drawstate.cliprect_enabled) {
|
|
data->glDisable(GL_SCISSOR_TEST);
|
|
} else {
|
|
data->glEnable(GL_SCISSOR_TEST);
|
|
}
|
|
data->drawstate.cliprect_enabled_dirty = SDL_FALSE;
|
|
}
|
|
|
|
if (data->drawstate.cliprect_enabled && data->drawstate.cliprect_dirty) {
|
|
const SDL_Rect *viewport = &data->drawstate.viewport;
|
|
const SDL_Rect *rect = &data->drawstate.cliprect;
|
|
data->glScissor(viewport->x + rect->x,
|
|
data->drawstate.target ? viewport->y + rect->y : data->drawstate.drawableh - viewport->y - rect->y - rect->h,
|
|
rect->w, rect->h);
|
|
data->drawstate.cliprect_dirty = SDL_FALSE;
|
|
}
|
|
|
|
if (blend != data->drawstate.blend) {
|
|
if (blend == SDL_BLENDMODE_NONE) {
|
|
data->glDisable(GL_BLEND);
|
|
} else {
|
|
data->glEnable(GL_BLEND);
|
|
data->glBlendFuncSeparate(GetBlendFunc(SDL_GetBlendModeSrcColorFactor(blend)),
|
|
GetBlendFunc(SDL_GetBlendModeDstColorFactor(blend)),
|
|
GetBlendFunc(SDL_GetBlendModeSrcAlphaFactor(blend)),
|
|
GetBlendFunc(SDL_GetBlendModeDstAlphaFactor(blend)));
|
|
data->glBlendEquation(GetBlendEquation(SDL_GetBlendModeColorOperation(blend)));
|
|
}
|
|
data->drawstate.blend = blend;
|
|
}
|
|
|
|
if (data->shaders && (shader != data->drawstate.shader)) {
|
|
GL_SelectShader(data->shaders, shader);
|
|
data->drawstate.shader = shader;
|
|
}
|
|
|
|
if ((cmd->data.draw.texture != NULL) != data->drawstate.texturing) {
|
|
if (cmd->data.draw.texture == NULL) {
|
|
data->glDisable(data->textype);
|
|
data->drawstate.texturing = SDL_FALSE;
|
|
} else {
|
|
data->glEnable(data->textype);
|
|
data->drawstate.texturing = SDL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
SetCopyState(GL_RenderData *data, const SDL_RenderCommand *cmd)
|
|
{
|
|
SDL_Texture *texture = cmd->data.draw.texture;
|
|
const GL_TextureData *texturedata = (GL_TextureData *) texture->driverdata;
|
|
GL_Shader shader;
|
|
|
|
if (texture->format == SDL_PIXELFORMAT_ABGR8888 || texture->format == SDL_PIXELFORMAT_ARGB8888) {
|
|
shader = SHADER_RGBA;
|
|
} else {
|
|
shader = SHADER_RGB;
|
|
}
|
|
|
|
if (data->shaders) {
|
|
if (texturedata->yuv || texturedata->nv12) {
|
|
switch (SDL_GetYUVConversionModeForResolution(texture->w, texture->h)) {
|
|
case SDL_YUV_CONVERSION_JPEG:
|
|
if (texturedata->yuv) {
|
|
shader = SHADER_YUV_JPEG;
|
|
} else if (texture->format == SDL_PIXELFORMAT_NV12) {
|
|
shader = SHADER_NV12_JPEG;
|
|
} else {
|
|
shader = SHADER_NV21_JPEG;
|
|
}
|
|
break;
|
|
case SDL_YUV_CONVERSION_BT601:
|
|
if (texturedata->yuv) {
|
|
shader = SHADER_YUV_BT601;
|
|
} else if (texture->format == SDL_PIXELFORMAT_NV12) {
|
|
shader = SHADER_NV12_BT601;
|
|
} else {
|
|
shader = SHADER_NV21_BT601;
|
|
}
|
|
break;
|
|
case SDL_YUV_CONVERSION_BT709:
|
|
if (texturedata->yuv) {
|
|
shader = SHADER_YUV_BT709;
|
|
} else if (texture->format == SDL_PIXELFORMAT_NV12) {
|
|
shader = SHADER_NV12_BT709;
|
|
} else {
|
|
shader = SHADER_NV21_BT709;
|
|
}
|
|
break;
|
|
default:
|
|
SDL_assert(!"unsupported YUV conversion mode");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
SetDrawState(data, cmd, shader);
|
|
|
|
if (texture != data->drawstate.texture) {
|
|
const GLenum textype = data->textype;
|
|
if (texturedata->yuv) {
|
|
data->glActiveTextureARB(GL_TEXTURE2_ARB);
|
|
data->glBindTexture(textype, texturedata->vtexture);
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE1_ARB);
|
|
data->glBindTexture(textype, texturedata->utexture);
|
|
}
|
|
if (texturedata->nv12) {
|
|
data->glActiveTextureARB(GL_TEXTURE1_ARB);
|
|
data->glBindTexture(textype, texturedata->utexture);
|
|
}
|
|
data->glActiveTextureARB(GL_TEXTURE0_ARB);
|
|
data->glBindTexture(textype, texturedata->texture);
|
|
|
|
data->drawstate.texture = texture;
|
|
}
|
|
}
|
|
|
|
static int
|
|
GL_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertices, size_t vertsize)
|
|
{
|
|
/* !!! FIXME: it'd be nice to use a vertex buffer instead of immediate mode... */
|
|
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
|
|
size_t i;
|
|
|
|
if (GL_ActivateRenderer(renderer) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
data->drawstate.target = renderer->target;
|
|
if (!data->drawstate.target) {
|
|
SDL_GL_GetDrawableSize(renderer->window, &data->drawstate.drawablew, &data->drawstate.drawableh);
|
|
}
|
|
|
|
|
|
while (cmd) {
|
|
switch (cmd->command) {
|
|
case SDL_RENDERCMD_SETDRAWCOLOR: {
|
|
const Uint8 r = cmd->data.color.r;
|
|
const Uint8 g = cmd->data.color.g;
|
|
const Uint8 b = cmd->data.color.b;
|
|
const Uint8 a = cmd->data.color.a;
|
|
const Uint32 color = ((a << 24) | (r << 16) | (g << 8) | b);
|
|
if (color != data->drawstate.color) {
|
|
data->glColor4f((GLfloat) r * inv255f,
|
|
(GLfloat) g * inv255f,
|
|
(GLfloat) b * inv255f,
|
|
(GLfloat) a * inv255f);
|
|
data->drawstate.color = color;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case SDL_RENDERCMD_SETVIEWPORT: {
|
|
SDL_Rect *viewport = &data->drawstate.viewport;
|
|
if (SDL_memcmp(viewport, &cmd->data.viewport.rect, sizeof (SDL_Rect)) != 0) {
|
|
SDL_memcpy(viewport, &cmd->data.viewport.rect, sizeof (SDL_Rect));
|
|
data->drawstate.viewport_dirty = SDL_TRUE;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case SDL_RENDERCMD_SETCLIPRECT: {
|
|
const SDL_Rect *rect = &cmd->data.cliprect.rect;
|
|
if (data->drawstate.cliprect_enabled != cmd->data.cliprect.enabled) {
|
|
data->drawstate.cliprect_enabled = cmd->data.cliprect.enabled;
|
|
data->drawstate.cliprect_enabled_dirty = SDL_TRUE;
|
|
}
|
|
if (SDL_memcmp(&data->drawstate.cliprect, rect, sizeof (SDL_Rect)) != 0) {
|
|
SDL_memcpy(&data->drawstate.cliprect, rect, sizeof (SDL_Rect));
|
|
data->drawstate.cliprect_dirty = SDL_TRUE;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case SDL_RENDERCMD_CLEAR: {
|
|
const Uint8 r = cmd->data.color.r;
|
|
const Uint8 g = cmd->data.color.g;
|
|
const Uint8 b = cmd->data.color.b;
|
|
const Uint8 a = cmd->data.color.a;
|
|
const Uint32 color = ((a << 24) | (r << 16) | (g << 8) | b);
|
|
if (color != data->drawstate.clear_color) {
|
|
const GLfloat fr = ((GLfloat) r) * inv255f;
|
|
const GLfloat fg = ((GLfloat) g) * inv255f;
|
|
const GLfloat fb = ((GLfloat) b) * inv255f;
|
|
const GLfloat fa = ((GLfloat) a) * inv255f;
|
|
data->glClearColor(fr, fg, fb, fa);
|
|
data->drawstate.clear_color = color;
|
|
}
|
|
|
|
if (data->drawstate.cliprect_enabled || data->drawstate.cliprect_enabled_dirty) {
|
|
data->glDisable(GL_SCISSOR_TEST);
|
|
data->drawstate.cliprect_enabled_dirty = data->drawstate.cliprect_enabled;
|
|
}
|
|
|
|
data->glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
break;
|
|
}
|
|
|
|
case SDL_RENDERCMD_DRAW_POINTS: {
|
|
const size_t count = cmd->data.draw.count;
|
|
const GLfloat *verts = (GLfloat *) (((Uint8 *) vertices) + cmd->data.draw.first);
|
|
SetDrawState(data, cmd, SHADER_SOLID);
|
|
data->glBegin(GL_POINTS);
|
|
for (i = 0; i < count; i++, verts += 2) {
|
|
data->glVertex2f(verts[0], verts[1]);
|
|
}
|
|
data->glEnd();
|
|
break;
|
|
}
|
|
|
|
case SDL_RENDERCMD_DRAW_LINES: {
|
|
const GLfloat *verts = (GLfloat *) (((Uint8 *) vertices) + cmd->data.draw.first);
|
|
const size_t count = cmd->data.draw.count;
|
|
SDL_assert(count >= 2);
|
|
SetDrawState(data, cmd, SHADER_SOLID);
|
|
data->glBegin(GL_LINE_STRIP);
|
|
for (i = 0; i < count; ++i, verts += 2) {
|
|
data->glVertex2f(verts[0], verts[1]);
|
|
}
|
|
data->glEnd();
|
|
break;
|
|
}
|
|
|
|
case SDL_RENDERCMD_FILL_RECTS: {
|
|
const size_t count = cmd->data.draw.count;
|
|
const GLfloat *verts = (GLfloat *) (((Uint8 *) vertices) + cmd->data.draw.first);
|
|
SetDrawState(data, cmd, SHADER_SOLID);
|
|
for (i = 0; i < count; ++i, verts += 4) {
|
|
data->glRectf(verts[0], verts[1], verts[2], verts[3]);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case SDL_RENDERCMD_COPY: {
|
|
const GLfloat *verts = (GLfloat *) (((Uint8 *) vertices) + cmd->data.draw.first);
|
|
const GLfloat minx = verts[0];
|
|
const GLfloat miny = verts[1];
|
|
const GLfloat maxx = verts[2];
|
|
const GLfloat maxy = verts[3];
|
|
const GLfloat minu = verts[4];
|
|
const GLfloat maxu = verts[5];
|
|
const GLfloat minv = verts[6];
|
|
const GLfloat maxv = verts[7];
|
|
SetCopyState(data, cmd);
|
|
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();
|
|
break;
|
|
}
|
|
|
|
case SDL_RENDERCMD_COPY_EX: {
|
|
const GLfloat *verts = (GLfloat *) (((Uint8 *) vertices) + cmd->data.draw.first);
|
|
const GLfloat minx = verts[0];
|
|
const GLfloat miny = verts[1];
|
|
const GLfloat maxx = verts[2];
|
|
const GLfloat maxy = verts[3];
|
|
const GLfloat minu = verts[4];
|
|
const GLfloat maxu = verts[5];
|
|
const GLfloat minv = verts[6];
|
|
const GLfloat maxv = verts[7];
|
|
const GLfloat translatex = verts[8];
|
|
const GLfloat translatey = verts[9];
|
|
const GLdouble angle = verts[10];
|
|
SetCopyState(data, cmd);
|
|
|
|
/* Translate to flip, rotate, translate to position */
|
|
data->glPushMatrix();
|
|
data->glTranslatef(translatex, translatey, 0.0f);
|
|
data->glRotated(angle, 0.0, 0.0, 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();
|
|
break;
|
|
}
|
|
|
|
case SDL_RENDERCMD_NO_OP:
|
|
break;
|
|
}
|
|
|
|
cmd = cmd->next;
|
|
}
|
|
|
|
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;
|
|
Uint32 temp_format = renderer->target ? renderer->target->format : SDL_PIXELFORMAT_ARGB8888;
|
|
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);
|
|
|
|
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. */
|
|
}
|
|
|
|
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)));
|
|
|
|
data->glReadPixels(rect->x, renderer->target ? rect->y : (h-rect->y)-rect->h,
|
|
rect->w, rect->h, format, type, temp_pixels);
|
|
|
|
if (GL_CheckError("glReadPixels()", renderer) < 0) {
|
|
SDL_free(temp_pixels);
|
|
return -1;
|
|
}
|
|
|
|
/* Flip the rows to be top-down if necessary */
|
|
if (!renderer->target) {
|
|
SDL_bool isstack;
|
|
length = rect->w * SDL_BYTESPERPIXEL(temp_format);
|
|
src = (Uint8*)temp_pixels + (rect->h-1)*temp_pitch;
|
|
dst = (Uint8*)temp_pixels;
|
|
tmp = SDL_small_alloc(Uint8, length, &isstack);
|
|
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_small_free(tmp, isstack);
|
|
}
|
|
|
|
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 (renderdata->drawstate.texture == texture) {
|
|
renderdata->drawstate.texture = NULL;
|
|
}
|
|
if (renderdata->drawstate.target == texture) {
|
|
renderdata->drawstate.target = NULL;
|
|
}
|
|
|
|
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) {
|
|
if (data->context != NULL) {
|
|
/* make sure we delete the right resources! */
|
|
GL_ActivateRenderer(renderer);
|
|
}
|
|
|
|
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;
|
|
const GLenum textype = data->textype;
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
data->glEnable(textype);
|
|
if (texturedata->yuv) {
|
|
data->glActiveTextureARB(GL_TEXTURE2_ARB);
|
|
data->glBindTexture(textype, texturedata->vtexture);
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE1_ARB);
|
|
data->glBindTexture(textype, texturedata->utexture);
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE0_ARB);
|
|
}
|
|
data->glBindTexture(textype, texturedata->texture);
|
|
|
|
data->drawstate.texturing = SDL_TRUE;
|
|
data->drawstate.texture = 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;
|
|
const GLenum textype = data->textype;
|
|
|
|
GL_ActivateRenderer(renderer);
|
|
|
|
if (texturedata->yuv) {
|
|
data->glActiveTextureARB(GL_TEXTURE2_ARB);
|
|
data->glDisable(textype);
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE1_ARB);
|
|
data->glDisable(textype);
|
|
|
|
data->glActiveTextureARB(GL_TEXTURE0_ARB);
|
|
}
|
|
|
|
data->glDisable(textype);
|
|
|
|
data->drawstate.texturing = SDL_FALSE;
|
|
data->drawstate.texture = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
SDL_Renderer *
|
|
GL_CreateRenderer(SDL_Window * window, Uint32 flags)
|
|
{
|
|
SDL_Renderer *renderer;
|
|
GL_RenderData *data;
|
|
GLint value;
|
|
Uint32 window_flags;
|
|
int profile_mask = 0, major = 0, minor = 0;
|
|
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) {
|
|
SDL_free(renderer);
|
|
SDL_OutOfMemory();
|
|
goto error;
|
|
}
|
|
|
|
renderer->GetOutputSize = GL_GetOutputSize;
|
|
renderer->SupportsBlendMode = GL_SupportsBlendMode;
|
|
renderer->CreateTexture = GL_CreateTexture;
|
|
renderer->UpdateTexture = GL_UpdateTexture;
|
|
renderer->UpdateTextureYUV = GL_UpdateTextureYUV;
|
|
renderer->LockTexture = GL_LockTexture;
|
|
renderer->UnlockTexture = GL_UnlockTexture;
|
|
renderer->SetTextureScaleMode = GL_SetTextureScaleMode;
|
|
renderer->SetRenderTarget = GL_SetRenderTarget;
|
|
renderer->QueueSetViewport = GL_QueueSetViewport;
|
|
renderer->QueueSetDrawColor = GL_QueueSetViewport; /* SetViewport and SetDrawColor are (currently) no-ops. */
|
|
renderer->QueueDrawPoints = GL_QueueDrawPoints;
|
|
renderer->QueueDrawLines = GL_QueueDrawLines;
|
|
renderer->QueueFillRects = GL_QueueFillRects;
|
|
renderer->QueueCopy = GL_QueueCopy;
|
|
renderer->QueueCopyEx = GL_QueueCopyEx;
|
|
renderer->RunCommandQueue = GL_RunCommandQueue;
|
|
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;
|
|
renderer->info.flags = SDL_RENDERER_ACCELERATED;
|
|
renderer->driverdata = data;
|
|
renderer->window = window;
|
|
|
|
data->context = SDL_GL_CreateContext(window);
|
|
if (!data->context) {
|
|
SDL_free(renderer);
|
|
SDL_free(data);
|
|
goto error;
|
|
}
|
|
if (SDL_GL_MakeCurrent(window, data->context) < 0) {
|
|
SDL_GL_DeleteContext(data->context);
|
|
SDL_free(renderer);
|
|
SDL_free(data);
|
|
goto error;
|
|
}
|
|
|
|
if (GL_LoadFunctions(data) < 0) {
|
|
SDL_GL_DeleteContext(data->context);
|
|
SDL_free(renderer);
|
|
SDL_free(data);
|
|
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;
|
|
data->glGetPointerv(GL_DEBUG_CALLBACK_FUNCTION_ARB, (GLvoid **)(char *)&data->next_error_callback);
|
|
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);
|
|
}
|
|
|
|
data->textype = GL_TEXTURE_2D;
|
|
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;
|
|
data->textype = GL_TEXTURE_RECTANGLE_ARB;
|
|
}
|
|
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 */
|
|
if (SDL_GetHintBoolean(SDL_HINT_RENDER_OPENGL_SHADERS, SDL_TRUE)) {
|
|
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 */
|
|
data->glMatrixMode(GL_MODELVIEW);
|
|
data->glLoadIdentity();
|
|
data->glDisable(GL_DEPTH_TEST);
|
|
data->glDisable(GL_CULL_FACE);
|
|
data->glDisable(GL_SCISSOR_TEST);
|
|
data->glDisable(data->textype);
|
|
data->glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
|
|
data->glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
|
|
/* This ended up causing video discrepancies between OpenGL and Direct3D */
|
|
/* data->glEnable(GL_LINE_SMOOTH); */
|
|
|
|
data->drawstate.blend = SDL_BLENDMODE_INVALID;
|
|
data->drawstate.shader = SHADER_INVALID;
|
|
data->drawstate.color = 0xFFFFFFFF;
|
|
data->drawstate.clear_color = 0xFFFFFFFF;
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
SDL_RenderDriver GL_RenderDriver = {
|
|
GL_CreateRenderer,
|
|
{
|
|
"opengl",
|
|
(SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_TARGETTEXTURE),
|
|
4,
|
|
{
|
|
SDL_PIXELFORMAT_ARGB8888,
|
|
SDL_PIXELFORMAT_ABGR8888,
|
|
SDL_PIXELFORMAT_RGB888,
|
|
SDL_PIXELFORMAT_BGR888
|
|
},
|
|
0,
|
|
0}
|
|
};
|
|
|
|
|
|
#endif /* SDL_VIDEO_RENDER_OGL && !SDL_RENDER_DISABLED */
|
|
|
|
/* vi: set ts=4 sw=4 expandtab: */
|