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Fixed bug #5768 - SDL_RenderGeometry's software backend failed to render when texture coordinates are reversed 

handle flip vertical/horizontal when reconstructing rects from triangles
This commit is contained in:
Sylvain 2022-06-07 16:30:01 +02:00
parent 168b97ca32
commit 2cc2260435
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GPG Key ID: 5F87E02E5BC0939E
1 changed files with 19 additions and 3 deletions
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22
src/render/SDL_render.c
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@ -4007,7 +4007,23 @@ SDL_SW_RenderGeometryRaw(SDL_Renderer *renderer,
if (texture && s.w != 0 && s.h != 0) {
SDL_SetTextureAlphaMod(texture, col0_.a);
SDL_SetTextureColorMod(texture, col0_.r, col0_.g, col0_.b);
SDL_RenderCopyF(renderer, texture, &s, &d);
if (s.w > 0 && s.h > 0) {
SDL_RenderCopyF(renderer, texture, &s, &d);
} else {
int flags = 0;
if (s.w < 0) {
flags |= SDL_FLIP_HORIZONTAL;
s.w *= -1;
s.x -= s.w;
}
if (s.h < 0) {
flags |= SDL_FLIP_VERTICAL;
s.h *= -1;
s.y -= s.h;
}
SDL_RenderCopyExF(renderer, texture, &s, &d, 0, NULL, flags);
}
#if DEBUG_SW_RENDER_GEOMETRY
SDL_Log("Rect-COPY: RGB %d %d %d - Alpha:%d - texture=%p: src=(%d,%d, %d x %d) dst (%f, %f, %f x %f)", col0_.r, col0_.g, col0_.b, col0_.a,
(void *)texture, s.x, s.y, s.w, s.h, d.x, d.y, d.w, d.h);
@ -4017,8 +4033,8 @@ SDL_SW_RenderGeometryRaw(SDL_Renderer *renderer,
SDL_SetRenderDrawColor(renderer, col0_.r, col0_.g, col0_.b, col0_.a);
SDL_RenderFillRectF(renderer, &d);
#if DEBUG_SW_RENDER_GEOMETRY
SDL_Log("Rect-FILL: RGB %d %d %d - Alpha:%d - texture=%p: src=(%d,%d, %d x %d) dst (%f, %f, %f x %f)", col0_.r, col0_.g, col0_.b, col0_.a,
(void *)texture, s.x, s.y, s.w, s.h, d.x, d.y, d.w, d.h);
SDL_Log("Rect-FILL: RGB %d %d %d - Alpha:%d - texture=%p: dst (%f, %f, %f x %f)", col0_.r, col0_.g, col0_.b, col0_.a,
(void *)texture, d.x, d.y, d.w, d.h);
} else {
SDL_Log("Rect-DISMISS: RGB %d %d %d - Alpha:%d - texture=%p: src=(%d,%d, %d x %d) dst (%f, %f, %f x %f)", col0_.r, col0_.g, col0_.b, col0_.a,
(void *)texture, s.x, s.y, s.w, s.h, d.x, d.y, d.w, d.h);