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Added SDL_BlitSurface9Grid() and SDL_RenderTexture9Grid()

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Sam Lantinga 2024-07-20 16:39:09 -07:00
parent 9294476788
commit 6209c71f54
9 changed files with 583 additions and 0 deletions
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117
src/render/SDL_render.c
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@ -4160,6 +4160,123 @@ int SDL_RenderTextureTiled(SDL_Renderer *renderer, SDL_Texture *texture, const S
}
}
int SDL_RenderTexture9Grid(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_FRect *srcrect, float corner_size, float scale, const SDL_FRect *dstrect)
{
SDL_FRect full_src, full_dst;
SDL_FRect curr_src, curr_dst;
float dst_corner_size;
CHECK_RENDERER_MAGIC(renderer, -1);
CHECK_TEXTURE_MAGIC(texture, -1);
if (renderer != texture->renderer) {
return SDL_SetError("Texture was not created with this renderer");
}
if (!srcrect) {
full_src.x = 0;
full_src.y = 0;
full_src.w = (float)texture->w;
full_src.h = (float)texture->h;
srcrect = &full_src;
}
if (!dstrect) {
GetRenderViewportSize(renderer, &full_dst);
dstrect = &full_dst;
}
if (scale <= 0.0f || scale == 1.0f) {
dst_corner_size = corner_size;
} else {
dst_corner_size = (corner_size * scale);
}
// Upper-left corner
curr_src.x = srcrect->x;
curr_src.y = srcrect->y;
curr_src.w = corner_size;
curr_src.h = corner_size;
curr_dst.x = dstrect->x;
curr_dst.y = dstrect->y;
curr_dst.w = dst_corner_size;
curr_dst.h = dst_corner_size;
if (SDL_RenderTexture(renderer, texture, &curr_src, &curr_dst) < 0) {
return -1;
}
// Upper-right corner
curr_src.x = srcrect->x + srcrect->w - corner_size;
curr_dst.x = dstrect->x + dstrect->w - dst_corner_size;
if (SDL_RenderTexture(renderer, texture, &curr_src, &curr_dst) < 0) {
return -1;
}
// Lower-right corner
curr_src.y = srcrect->y + srcrect->h - corner_size;
curr_dst.y = dstrect->y + dstrect->h - dst_corner_size;
if (SDL_RenderTexture(renderer, texture, &curr_src, &curr_dst) < 0) {
return -1;
}
// Lower-left corner
curr_src.x = srcrect->x;
curr_dst.x = dstrect->x;
if (SDL_RenderTexture(renderer, texture, &curr_src, &curr_dst) < 0) {
return -1;
}
// Left
curr_src.y = srcrect->y + corner_size;
curr_src.h = srcrect->h - 2 * corner_size;
curr_dst.y = dstrect->y + dst_corner_size;
curr_dst.h = dstrect->h - 2 * dst_corner_size;
if (SDL_RenderTexture(renderer, texture, &curr_src, &curr_dst) < 0) {
return -1;
}
// Right
curr_src.x = srcrect->x + srcrect->w - corner_size;
curr_dst.x = dstrect->x + dstrect->w - dst_corner_size;
if (SDL_RenderTexture(renderer, texture, &curr_src, &curr_dst) < 0) {
return -1;
}
// Top
curr_src.x = srcrect->x + corner_size;
curr_src.y = srcrect->y;
curr_src.w = srcrect->w - 2 * corner_size;
curr_src.h = corner_size;
curr_dst.x = dstrect->x + dst_corner_size;
curr_dst.y = dstrect->y;
curr_dst.w = dstrect->w - 2 * dst_corner_size;
curr_dst.h = dst_corner_size;
if (SDL_RenderTexture(renderer, texture, &curr_src, &curr_dst) < 0) {
return -1;
}
// Bottom
curr_src.y = srcrect->y + srcrect->h - corner_size;
curr_dst.y = dstrect->y + dstrect->h - dst_corner_size;
if (SDL_RenderTexture(renderer, texture, &curr_src, &curr_dst) < 0) {
return -1;
}
// Center
curr_src.x = srcrect->x + corner_size;
curr_src.y = srcrect->y + corner_size;
curr_src.w = srcrect->w - 2 * corner_size;
curr_src.h = srcrect->h - 2 * corner_size;
curr_dst.x = dstrect->x + dst_corner_size;
curr_dst.y = dstrect->y + dst_corner_size;
curr_dst.w = dstrect->w - 2 * dst_corner_size;
curr_dst.h = dstrect->h - 2 * dst_corner_size;
if (SDL_RenderTexture(renderer, texture, &curr_src, &curr_dst) < 0) {
return -1;
}
return 0;
}
int SDL_RenderGeometry(SDL_Renderer *renderer,
SDL_Texture *texture,
const SDL_Vertex *vertices, int num_vertices,