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Use SDL_Color for SDL_RenderGeometryRaw() and add SDL_RenderGeometryRawFloat()

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Eventually we can re-add a fast path for that data down to the individual renderers. Setting color scale would still require converting to float, and most hardware accelerated renderers prefer to consume colors as float, so this requires some thought and performance testing.

Fixes https://github.com/libsdl-org/SDL/issues/9009
This commit is contained in:
Sam Lantinga
2024-02-06 17:23:07 -08:00
parent 9e194c1a1d
commit 3158342441
7 changed files with 77 additions and 6 deletions
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36
include/SDL3/SDL_render.h
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@@ -1751,7 +1751,7 @@ extern DECLSPEC int SDLCALL SDL_RenderGeometry(SDL_Renderer *renderer,
* \param texture (optional) The SDL texture to use.
* \param xy Vertex positions
* \param xy_stride Byte size to move from one element to the next element
* \param color Vertex colors (as SDL_FColor)
* \param color Vertex colors (as SDL_Color)
* \param color_stride Byte size to move from one element to the next element
* \param uv Vertex normalized texture coordinates
* \param uv_stride Byte size to move from one element to the next element
@@ -1769,6 +1769,40 @@ extern DECLSPEC int SDLCALL SDL_RenderGeometry(SDL_Renderer *renderer,
* \sa SDL_Vertex
*/
extern DECLSPEC int SDLCALL SDL_RenderGeometryRaw(SDL_Renderer *renderer,
SDL_Texture *texture,
const float *xy, int xy_stride,
const SDL_Color *color, int color_stride,
const float *uv, int uv_stride,
int num_vertices,
const void *indices, int num_indices, int size_indices);
/**
* Render a list of triangles, optionally using a texture and indices into the
* vertex arrays Color and alpha modulation is done per vertex
* (SDL_SetTextureColorMod and SDL_SetTextureAlphaMod are ignored).
*
* \param renderer The rendering context.
* \param texture (optional) The SDL texture to use.
* \param xy Vertex positions
* \param xy_stride Byte size to move from one element to the next element
* \param color Vertex colors (as SDL_FColor)
* \param color_stride Byte size to move from one element to the next element
* \param uv Vertex normalized texture coordinates
* \param uv_stride Byte size to move from one element to the next element
* \param num_vertices Number of vertices.
* \param indices (optional) An array of indices into the 'vertices' arrays,
* if NULL all vertices will be rendered in sequential order.
* \param num_indices Number of indices.
* \param size_indices Index size: 1 (byte), 2 (short), 4 (int)
* \returns 0 on success or a negative error code on failure; call
* SDL_GetError() for more information.
*
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_RenderGeometry
* \sa SDL_Vertex
*/
extern DECLSPEC int SDLCALL SDL_RenderGeometryRawFloat(SDL_Renderer *renderer,
SDL_Texture *texture,
const float *xy, int xy_stride,
const SDL_FColor *color, int color_stride,