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Removed SDL_RenderGeometryRawFloat()

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After discussion with @ocornut, SDL_RenderGeometryRaw() will take floating point colors and conversion from 8-bit color can happen on the application side.  We can always add an 8-bit color fast path in the future if we need it on handheld platforms.

If you need code to do this in your application, you can use the following:

int SDL_RenderGeometryRaw8BitColor(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)
{
    int i, retval, isstack;
    const Uint8 *color2 = (const Uint8 *)color;
    SDL_FColor *color3;

    if (num_vertices <= 0) {
        return SDL_InvalidParamError("num_vertices");
    }
    if (!color) {
        return SDL_InvalidParamError("color");
    }

    color3 = (SDL_FColor *)SDL_small_alloc(SDL_FColor, num_vertices, &isstack);
    if (!color3) {
        return -1;
    }

    for (i = 0; i < num_vertices; ++i) {
        color3[i].r = color->r / 255.0f;
        color3[i].g = color->g / 255.0f;
        color3[i].b = color->b / 255.0f;
        color3[i].a = color->a / 255.0f;
        color2 += color_stride;
        color = (const SDL_Color *)color2;
    }

    retval = SDL_RenderGeometryRaw(renderer, texture, xy, xy_stride, color3, sizeof(*color3), uv, uv_stride, num_vertices, indices, num_indices, size_indices);

    SDL_small_free(color3, isstack);

    return retval;
}

Fixes https://github.com/libsdl-org/SDL/issues/9009
This commit is contained in:
Sam Lantinga 2024-06-28 23:55:23 -07:00
parent 22bca55d84
commit 6f199eabb8
6 changed files with 5 additions and 76 deletions
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36
include/SDL3/SDL_render.h
View file

@ -1886,7 +1886,7 @@ extern SDL_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_Color).
* \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.
@ -1903,40 +1903,6 @@ extern SDL_DECLSPEC int SDLCALL SDL_RenderGeometry(SDL_Renderer *renderer,
* \sa SDL_RenderGeometry
*/
extern SDL_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_RenderGeometryRaw
*/
extern SDL_DECLSPEC int SDLCALL SDL_RenderGeometryRawFloat(SDL_Renderer *renderer,
SDL_Texture *texture,
const float *xy, int xy_stride,
const SDL_FColor *color, int color_stride,