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Add sysrender interface

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Sylvain 2021-03-16 15:09:34 +01:00 committed by Sylvain Becker
parent f22fc4ca35
commit 6e26d320c6
2 changed files with 96 additions and 1 deletions
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90
src/render/SDL_render.c
View File

@ -562,6 +562,25 @@ QueueCmdCopyEx(SDL_Renderer *renderer, SDL_Texture * texture,
return retval;
}
static int
QueueCmdGeometry(SDL_Renderer *renderer, SDL_Texture *texture,
SDL_Vertex *vertices, int num_vertices, int *indices, int num_indices, float scale_x, float scale_y)
{
SDL_RenderCommand *cmd;
int retval = -1;
if (texture) {
cmd = PrepQueueCmdDrawTexture(renderer, texture, SDL_RENDERCMD_GEOMETRY);
} else {
cmd = PrepQueueCmdDrawSolid(renderer, SDL_RENDERCMD_GEOMETRY);
}
if (cmd != NULL) {
retval = renderer->QueueGeometry(renderer, cmd, texture, vertices, num_vertices, indices, num_indices, scale_x, scale_y);
if (retval < 0) {
cmd->command = SDL_RENDERCMD_NO_OP;
}
}
return retval;
}
static int UpdateLogicalSize(SDL_Renderer *renderer);
@ -3303,6 +3322,77 @@ SDL_RenderCopyExF(SDL_Renderer * renderer, SDL_Texture * texture,
return retval < 0 ? retval : FlushRenderCommandsIfNotBatching(renderer);
}
int
SDL_RenderGeometry(SDL_Renderer *renderer,
SDL_Texture *texture,
SDL_Vertex *vertices, int num_vertices,
int *indices, int num_indices)
{
int i;
int retval;
int count = indices ? num_indices : num_vertices;
CHECK_RENDERER_MAGIC(renderer, -1);
if (!renderer->QueueGeometry) {
return SDL_Unsupported();
}
if (texture) {
CHECK_TEXTURE_MAGIC(texture, -1);
if (renderer != texture->renderer) {
return SDL_SetError("Texture was not created with this renderer");
}
}
if (!vertices) {
return SDL_InvalidParamError("points");
}
if (count % 3 != 0) {
return SDL_InvalidParamError(indices ? "num_indices" : "num_vertices");
}
/* Don't draw while we're hidden */
if (renderer->hidden) {
return 0;
}
if (num_vertices < 3) {
return 0;
}
if (texture && texture->native) {
texture = texture->native;
}
if (texture) {
for (i = 0; i < num_vertices; ++i) {
if (vertices[i].tex_coord.x < 0 || vertices[i].tex_coord.y < 0 || vertices[i].tex_coord.x >= texture->w || vertices[i].tex_coord.y >= texture->h) {
return SDL_SetError("Values of 'vertices' out of bounds");
}
}
}
if (indices) {
for (i = 0; i < num_indices; ++i) {
if (indices[i] < 0 || indices[i] >= num_vertices) {
return SDL_SetError("Values of 'indices' out of bounds");
}
}
}
if (texture) {
texture->last_command_generation = renderer->render_command_generation;
}
retval = QueueCmdGeometry(renderer, texture, vertices, num_vertices, indices, num_indices, renderer->scale.x, renderer->scale.y);
return retval < 0 ? retval : FlushRenderCommandsIfNotBatching(renderer);
}
int
SDL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 format, void * pixels, int pitch)

7
src/render/SDL_sysrender.h
View File

@ -75,7 +75,8 @@ typedef enum
SDL_RENDERCMD_DRAW_LINES,
SDL_RENDERCMD_FILL_RECTS,
SDL_RENDERCMD_COPY,
SDL_RENDERCMD_COPY_EX
SDL_RENDERCMD_COPY_EX,
SDL_RENDERCMD_GEOMETRY
} SDL_RenderCommandType;
typedef struct SDL_RenderCommand
@ -128,6 +129,10 @@ struct SDL_Renderer
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 (*QueueGeometry) (SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture,
SDL_Vertex *vertices, int num_vertices, int *indices, int num_indices, float scale_x, float scale_y);
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,