mirror of
https://github.com/Relintai/sdl2_frt.git
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275 lines
10 KiB
C
275 lines
10 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
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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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#ifndef SDL_sysrender_h_
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#define SDL_sysrender_h_
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#include "SDL_render.h"
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#include "SDL_events.h"
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#include "SDL_mutex.h"
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#include "SDL_yuv_sw_c.h"
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/* The SDL 2D rendering system */
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typedef struct SDL_RenderDriver SDL_RenderDriver;
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/* Define the SDL texture structure */
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struct SDL_Texture
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{
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const void *magic;
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Uint32 format; /**< The pixel format of the texture */
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int access; /**< SDL_TextureAccess */
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int w; /**< The width of the texture */
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int h; /**< The height of the texture */
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int modMode; /**< The texture modulation mode */
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SDL_BlendMode blendMode; /**< The texture blend mode */
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SDL_ScaleMode scaleMode; /**< The texture scale mode */
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Uint8 r, g, b, a; /**< Texture modulation values */
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SDL_Renderer *renderer;
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/* Support for formats not supported directly by the renderer */
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SDL_Texture *native;
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SDL_SW_YUVTexture *yuv;
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void *pixels;
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int pitch;
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SDL_Rect locked_rect;
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SDL_Surface *locked_surface; /**< Locked region exposed as a SDL surface */
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Uint32 last_command_generation; /* last command queue generation this texture was in. */
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void *driverdata; /**< Driver specific texture representation */
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SDL_Texture *prev;
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SDL_Texture *next;
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};
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typedef enum
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{
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SDL_RENDERCMD_NO_OP,
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SDL_RENDERCMD_SETVIEWPORT,
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SDL_RENDERCMD_SETCLIPRECT,
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SDL_RENDERCMD_SETDRAWCOLOR,
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SDL_RENDERCMD_CLEAR,
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SDL_RENDERCMD_DRAW_POINTS,
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SDL_RENDERCMD_DRAW_LINES,
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SDL_RENDERCMD_FILL_RECTS,
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SDL_RENDERCMD_COPY,
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SDL_RENDERCMD_COPY_EX
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} SDL_RenderCommandType;
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typedef struct SDL_RenderCommand
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{
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SDL_RenderCommandType command;
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union {
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struct {
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size_t first;
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SDL_Rect rect;
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} viewport;
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struct {
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SDL_bool enabled;
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SDL_Rect rect;
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} cliprect;
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struct {
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size_t first;
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size_t count;
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Uint8 r, g, b, a;
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SDL_BlendMode blend;
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SDL_Texture *texture;
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} draw;
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struct {
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size_t first;
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Uint8 r, g, b, a;
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} color;
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} data;
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struct SDL_RenderCommand *next;
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} SDL_RenderCommand;
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/* Define the SDL renderer structure */
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struct SDL_Renderer
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{
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const void *magic;
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void (*WindowEvent) (SDL_Renderer * renderer, const SDL_WindowEvent *event);
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int (*GetOutputSize) (SDL_Renderer * renderer, int *w, int *h);
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SDL_bool (*SupportsBlendMode)(SDL_Renderer * renderer, SDL_BlendMode blendMode);
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int (*CreateTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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int (*QueueSetViewport) (SDL_Renderer * renderer, SDL_RenderCommand *cmd);
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int (*QueueSetDrawColor) (SDL_Renderer * renderer, SDL_RenderCommand *cmd);
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int (*QueueDrawPoints) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPoint * points,
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int count);
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int (*QueueDrawLines) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPoint * points,
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int count);
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int (*QueueFillRects) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FRect * rects,
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int count);
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int (*QueueCopy) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * texture,
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const SDL_Rect * srcrect, const SDL_FRect * dstrect);
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int (*QueueCopyEx) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * texture,
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const SDL_Rect * srcquad, const SDL_FRect * dstrect,
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const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip);
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int (*RunCommandQueue) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertices, size_t vertsize);
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int (*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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#if SDL_HAVE_YUV
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int (*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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int (*UpdateTextureNV) (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 *UVplane, int UVpitch);
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#endif
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int (*LockTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * rect, void **pixels, int *pitch);
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void (*UnlockTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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void (*SetTextureScaleMode) (SDL_Renderer * renderer, SDL_Texture * texture, SDL_ScaleMode scaleMode);
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int (*SetRenderTarget) (SDL_Renderer * renderer, SDL_Texture * texture);
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int (*RenderReadPixels) (SDL_Renderer * renderer, const SDL_Rect * rect,
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Uint32 format, void * pixels, int pitch);
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void (*RenderPresent) (SDL_Renderer * renderer);
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void (*DestroyTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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void (*DestroyRenderer) (SDL_Renderer * renderer);
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int (*GL_BindTexture) (SDL_Renderer * renderer, SDL_Texture *texture, float *texw, float *texh);
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int (*GL_UnbindTexture) (SDL_Renderer * renderer, SDL_Texture *texture);
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void *(*GetMetalLayer) (SDL_Renderer * renderer);
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void *(*GetMetalCommandEncoder) (SDL_Renderer * renderer);
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/* The current renderer info */
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SDL_RendererInfo info;
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/* The window associated with the renderer */
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SDL_Window *window;
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SDL_bool hidden;
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/* The logical resolution for rendering */
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int logical_w;
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int logical_h;
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int logical_w_backup;
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int logical_h_backup;
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/* Whether or not to force the viewport to even integer intervals */
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SDL_bool integer_scale;
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/* The drawable area within the window */
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SDL_Rect viewport;
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SDL_Rect viewport_backup;
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/* The clip rectangle within the window */
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SDL_Rect clip_rect;
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SDL_Rect clip_rect_backup;
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/* Wether or not the clipping rectangle is used. */
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SDL_bool clipping_enabled;
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SDL_bool clipping_enabled_backup;
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/* The render output coordinate scale */
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SDL_FPoint scale;
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SDL_FPoint scale_backup;
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/* The pixel to point coordinate scale */
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SDL_FPoint dpi_scale;
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/* Whether or not to scale relative mouse motion */
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SDL_bool relative_scaling;
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/* Remainder from scaled relative motion */
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float xrel;
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float yrel;
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/* The list of textures */
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SDL_Texture *textures;
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SDL_Texture *target;
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SDL_mutex *target_mutex;
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Uint8 r, g, b, a; /**< Color for drawing operations values */
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SDL_BlendMode blendMode; /**< The drawing blend mode */
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SDL_bool always_batch;
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SDL_bool batching;
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SDL_RenderCommand *render_commands;
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SDL_RenderCommand *render_commands_tail;
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SDL_RenderCommand *render_commands_pool;
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Uint32 render_command_generation;
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Uint32 last_queued_color;
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SDL_Rect last_queued_viewport;
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SDL_Rect last_queued_cliprect;
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SDL_bool last_queued_cliprect_enabled;
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SDL_bool color_queued;
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SDL_bool viewport_queued;
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SDL_bool cliprect_queued;
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void *vertex_data;
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size_t vertex_data_used;
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size_t vertex_data_allocation;
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void *driverdata;
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};
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/* Define the SDL render driver structure */
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struct SDL_RenderDriver
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{
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SDL_Renderer *(*CreateRenderer) (SDL_Window * window, Uint32 flags);
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/* Info about the renderer capabilities */
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SDL_RendererInfo info;
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};
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/* Not all of these are available in a given build. Use #ifdefs, etc. */
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extern SDL_RenderDriver D3D_RenderDriver;
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extern SDL_RenderDriver D3D11_RenderDriver;
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extern SDL_RenderDriver GL_RenderDriver;
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extern SDL_RenderDriver GLES2_RenderDriver;
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extern SDL_RenderDriver GLES_RenderDriver;
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extern SDL_RenderDriver DirectFB_RenderDriver;
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extern SDL_RenderDriver METAL_RenderDriver;
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extern SDL_RenderDriver PSP_RenderDriver;
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extern SDL_RenderDriver SW_RenderDriver;
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extern SDL_RenderDriver VITA_GLES2_RenderDriver;
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extern SDL_RenderDriver VITA_GXM_RenderDriver;
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/* Blend mode functions */
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extern SDL_BlendFactor SDL_GetBlendModeSrcColorFactor(SDL_BlendMode blendMode);
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extern SDL_BlendFactor SDL_GetBlendModeDstColorFactor(SDL_BlendMode blendMode);
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extern SDL_BlendOperation SDL_GetBlendModeColorOperation(SDL_BlendMode blendMode);
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extern SDL_BlendFactor SDL_GetBlendModeSrcAlphaFactor(SDL_BlendMode blendMode);
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extern SDL_BlendFactor SDL_GetBlendModeDstAlphaFactor(SDL_BlendMode blendMode);
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extern SDL_BlendOperation SDL_GetBlendModeAlphaOperation(SDL_BlendMode blendMode);
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/* drivers call this during their Queue*() methods to make space in a array that are used
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for a vertex buffer during RunCommandQueue(). Pointers returned here are only valid until
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the next call, because it might be in an array that gets realloc()'d. */
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extern void *SDL_AllocateRenderVertices(SDL_Renderer *renderer, const size_t numbytes, const size_t alignment, size_t *offset);
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extern int SDL_PrivateLowerBlitScaled(SDL_Surface * src, SDL_Rect * srcrect, SDL_Surface * dst, SDL_Rect * dstrect, SDL_ScaleMode scaleMode);
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extern int SDL_PrivateUpperBlitScaled(SDL_Surface * src, const SDL_Rect * srcrect, SDL_Surface * dst, SDL_Rect * dstrect, SDL_ScaleMode scaleMode);
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#endif /* SDL_sysrender_h_ */
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/* vi: set ts=4 sw=4 expandtab: */
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