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render: Move to a batching system for rendering (work in progress).

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This commit is contained in:
Ryan C. Gordon 2018-09-20 15:46:02 -04:00
parent e0cc19f2d8
commit 5fb67f9f55
3 changed files with 455 additions and 70 deletions
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86
src/render/SDL_sysrender.h
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@ -75,12 +75,51 @@ struct SDL_Texture
int pitch;
SDL_Rect locked_rect;
Uint32 last_command_generation; /* last command queue generation this texture was in. */
void *driverdata; /**< Driver specific texture representation */
SDL_Texture *prev;
SDL_Texture *next;
};
typedef enum
{
SDL_RENDERCMD_NO_OP,
SDL_RENDERCMD_SETVIEWPORT,
SDL_RENDERCMD_SETCLIPRECT,
SDL_RENDERCMD_CLEAR,
SDL_RENDERCMD_DRAW_POINTS,
SDL_RENDERCMD_DRAW_LINES,
SDL_RENDERCMD_FILL_RECTS,
SDL_RENDERCMD_COPY,
SDL_RENDERCMD_COPY_EX
} SDL_RenderCommandType;
typedef struct SDL_RenderCommand
{
SDL_RenderCommandType command;
union {
SDL_Rect viewport;
struct {
SDL_bool enabled;
SDL_Rect rect;
} cliprect;
struct {
size_t first;
size_t count;
Uint8 r, g, b, a;
SDL_BlendMode blend;
SDL_Texture *texture;
} draw;
struct {
Uint8 r, g, b, a;
} color;
} data;
struct SDL_RenderCommand *next;
} SDL_RenderCommand;
/* Define the SDL renderer structure */
struct SDL_Renderer
{
@ -90,12 +129,18 @@ struct SDL_Renderer
int (*GetOutputSize) (SDL_Renderer * renderer, int *w, int *h);
SDL_bool (*SupportsBlendMode)(SDL_Renderer * renderer, SDL_BlendMode blendMode);
int (*CreateTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
int (*SetTextureColorMod) (SDL_Renderer * renderer,
SDL_Texture * texture);
int (*SetTextureAlphaMod) (SDL_Renderer * renderer,
SDL_Texture * texture);
int (*SetTextureBlendMode) (SDL_Renderer * renderer,
SDL_Texture * texture);
int (*QueueDrawPoints) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPoint * points,
int count);
int (*QueueDrawLines) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPoint * points,
int count);
int (*QueueFillRects) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FRect * rects,
int count);
int (*QueueCopy) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_FRect * dstrect);
int (*QueueCopyEx) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * texture,
const SDL_Rect * srcquad, const SDL_FRect * dstrect,
const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip);
int (*RunCommandQueue) (SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertices, size_t vertsize);
int (*UpdateTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels,
int pitch);
@ -108,20 +153,6 @@ struct SDL_Renderer
const SDL_Rect * rect, void **pixels, int *pitch);
void (*UnlockTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
int (*SetRenderTarget) (SDL_Renderer * renderer, SDL_Texture * texture);
int (*UpdateViewport) (SDL_Renderer * renderer);
int (*UpdateClipRect) (SDL_Renderer * renderer);
int (*RenderClear) (SDL_Renderer * renderer);
int (*RenderDrawPoints) (SDL_Renderer * renderer, const SDL_FPoint * points,
int count);
int (*RenderDrawLines) (SDL_Renderer * renderer, const SDL_FPoint * points,
int count);
int (*RenderFillRects) (SDL_Renderer * renderer, const SDL_FRect * rects,
int count);
int (*RenderCopy) (SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_FRect * dstrect);
int (*RenderCopyEx) (SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcquad, const SDL_FRect * dstrect,
const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip);
int (*RenderReadPixels) (SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 format, void * pixels, int pitch);
void (*RenderPresent) (SDL_Renderer * renderer);
@ -178,6 +209,16 @@ struct SDL_Renderer
Uint8 r, g, b, a; /**< Color for drawing operations values */
SDL_BlendMode blendMode; /**< The drawing blend mode */
SDL_bool batching;
SDL_RenderCommand *render_commands;
SDL_RenderCommand *render_commands_tail;
SDL_RenderCommand *render_commands_pool;
Uint32 render_command_generation;
void *vertex_data;
size_t vertex_data_used;
size_t vertex_data_allocation;
void *driverdata;
};
@ -209,6 +250,11 @@ extern SDL_BlendFactor SDL_GetBlendModeSrcAlphaFactor(SDL_BlendMode blendMode);
extern SDL_BlendFactor SDL_GetBlendModeDstAlphaFactor(SDL_BlendMode blendMode);
extern SDL_BlendOperation SDL_GetBlendModeAlphaOperation(SDL_BlendMode blendMode);
/* drivers call this during their Queue*() methods to make space in a array that are used
for a vertex buffer during RunCommandQueue(). Pointers returned here are only valid until
the next call, because it might be in an array that gets realloc()'d. */
extern void *SDL_AllocateRenderVertices(SDL_Renderer *renderer, const size_t numbytes, size_t *offset);
#endif /* SDL_sysrender_h_ */
/* vi: set ts=4 sw=4 expandtab: */