Reverted 3d2e5a0b66

Applying these changes to external code doesn't actually improve anything, and within the context of the other Get* functions for renderers and surfaces, these stand out as outliers, so I'm going to back this change out.

src/render/SDL_render.c

@@ -1641,6 +1641,7 @@ SDL_Texture *SDL_CreateTextureFromSurface(SDL_Renderer *renderer, SDL_Surface *s
 
     {
         Uint8 r, g, b, a;
+        SDL_BlendMode blendMode;
 
         SDL_GetSurfaceColorMod(surface, &r, &g, &b);
         SDL_SetTextureColorMod(texture, r, g, b);
@@ -1652,7 +1653,8 @@ SDL_Texture *SDL_CreateTextureFromSurface(SDL_Renderer *renderer, SDL_Surface *s
             /* We converted to a texture with alpha format */
             SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
         } else {
-            SDL_SetTextureBlendMode(texture, SDL_GetSurfaceBlendMode(surface));
+            SDL_GetSurfaceBlendMode(surface, &blendMode);
+            SDL_SetTextureBlendMode(texture, blendMode);
         }
     }
     return texture;
@@ -1812,11 +1814,14 @@ int SDL_SetTextureBlendMode(SDL_Texture *texture, SDL_BlendMode blendMode)
     return 0;
 }
 
-SDL_BlendMode SDL_GetTextureBlendMode(SDL_Texture *texture)
+int SDL_GetTextureBlendMode(SDL_Texture *texture, SDL_BlendMode *blendMode)
 {
-    CHECK_TEXTURE_MAGIC(texture, SDL_BLENDMODE_INVALID);
+    CHECK_TEXTURE_MAGIC(texture, -1);
 
-    return texture->blendMode;
+    if (blendMode) {
+        *blendMode = texture->blendMode;
+    }
+    return 0;
 }
 
 int SDL_SetTextureScaleMode(SDL_Texture *texture, SDL_ScaleMode scaleMode)
@@ -1835,11 +1840,14 @@ int SDL_SetTextureScaleMode(SDL_Texture *texture, SDL_ScaleMode scaleMode)
     return 0;
 }
 
-SDL_ScaleMode SDL_GetTextureScaleMode(SDL_Texture *texture)
+int SDL_GetTextureScaleMode(SDL_Texture *texture, SDL_ScaleMode *scaleMode)
 {
-    CHECK_TEXTURE_MAGIC(texture, SDL_SCALEMODE_LINEAR);
+    CHECK_TEXTURE_MAGIC(texture, -1);
 
-    return texture->scaleMode;
+    if (scaleMode) {
+        *scaleMode = texture->scaleMode;
+    }
+    return 0;
 }
 
 #if SDL_HAVE_YUV
@@ -3065,11 +3073,14 @@ int SDL_SetRenderColorScale(SDL_Renderer *renderer, float scale)
     return 0;
 }
 
-float SDL_GetRenderColorScale(SDL_Renderer *renderer)
+int SDL_GetRenderColorScale(SDL_Renderer *renderer, float *scale)
 {
-    CHECK_RENDERER_MAGIC(renderer, 1.0f);
+    CHECK_RENDERER_MAGIC(renderer, -1);
 
-    return renderer->color_scale / renderer->SDR_white_point;
+    if (scale) {
+        *scale = renderer->color_scale / renderer->SDR_white_point;
+    }
+    return 0;
 }
 
 int SDL_SetRenderDrawBlendMode(SDL_Renderer *renderer, SDL_BlendMode blendMode)
@@ -3087,18 +3098,20 @@ int SDL_SetRenderDrawBlendMode(SDL_Renderer *renderer, SDL_BlendMode blendMode)
     return 0;
 }
 
-SDL_BlendMode SDL_GetRenderDrawBlendMode(SDL_Renderer *renderer)
+int SDL_GetRenderDrawBlendMode(SDL_Renderer *renderer, SDL_BlendMode *blendMode)
 {
-    CHECK_RENDERER_MAGIC(renderer, SDL_BLENDMODE_INVALID);
+    CHECK_RENDERER_MAGIC(renderer, -1);
 
-    return renderer->blendMode;
+    *blendMode = renderer->blendMode;
+    return 0;
 }
 
 int SDL_RenderClear(SDL_Renderer *renderer)
 {
+    int retval;
     CHECK_RENDERER_MAGIC(renderer, -1);
-
-    return QueueCmdClear(renderer);
+    retval = QueueCmdClear(renderer);
+    return retval;
 }
 
 int SDL_RenderPoint(SDL_Renderer *renderer, float x, float y)
@@ -3965,7 +3978,7 @@ static int SDLCALL SDL_SW_RenderGeometryRaw(SDL_Renderer *renderer,
     float r = 0, g = 0, b = 0, a = 0;
 
     /* Save */
-    blendMode = SDL_GetRenderDrawBlendMode(renderer);
+    SDL_GetRenderDrawBlendMode(renderer, &blendMode);
     SDL_GetRenderDrawColorFloat(renderer, &r, &g, &b, &a);
 
     if (texture) {

src/render/software/SDL_render_sw.c

@@ -355,7 +355,7 @@ static int SW_RenderCopyEx(SDL_Renderer *renderer, SDL_Surface *surface, SDL_Tex
         return -1;
     }
 
-    blendmode = SDL_GetSurfaceBlendMode(src);
+    SDL_GetSurfaceBlendMode(src, &blendmode);
     SDL_GetSurfaceAlphaMod(src, &alphaMod);
     SDL_GetSurfaceColorMod(src, &rMod, &gMod, &bMod);
 
@@ -841,7 +841,7 @@ static int SW_RunCommandQueue(SDL_Renderer *renderer, SDL_RenderCommand *cmd, vo
                         SDL_BlendMode blendmode;
                         Uint8 alphaMod, rMod, gMod, bMod;
 
-                        blendmode = SDL_GetSurfaceBlendMode(src);
+                        SDL_GetSurfaceBlendMode(src, &blendmode);
                         SDL_GetSurfaceAlphaMod(src, &alphaMod);
                         SDL_GetSurfaceColorMod(src, &rMod, &gMod, &bMod);
 

src/render/software/SDL_rotate.c

@@ -78,7 +78,11 @@ Returns colorkey info for a surface
 */
 static Uint32 get_colorkey(SDL_Surface *src)
 {
-    return SDL_GetSurfaceColorKey(src);
+    Uint32 key = 0;
+    if (SDL_SurfaceHasColorKey(src)) {
+        SDL_GetSurfaceColorKey(src, &key);
+    }
+    return key;
 }
 
 /* rotate (sx, sy) by (angle, center) into (dx, dy) */
@@ -497,8 +501,9 @@ SDL_Surface *SDLgfx_rotateSurface(SDL_Surface *src, double angle, int smooth, in
     }
 
     if (SDL_SurfaceHasColorKey(src)) {
-        colorkey = SDL_GetSurfaceColorKey(src);
-        colorKeyAvailable = SDL_TRUE;
+        if (SDL_GetSurfaceColorKey(src, &colorkey) == 0) {
+            colorKeyAvailable = SDL_TRUE;
+        }
     }
     /* This function requires a 32-bit surface or 8-bit surface with a colorkey */
     is8bit = src->internal->format->bits_per_pixel == 8 && colorKeyAvailable;
@@ -531,7 +536,7 @@ SDL_Surface *SDLgfx_rotateSurface(SDL_Surface *src, double angle, int smooth, in
     /* Adjust for guard rows */
     rz_dst->h = rect_dest->h;
 
-    blendmode = SDL_GetSurfaceBlendMode(src);
+    SDL_GetSurfaceBlendMode(src, &blendmode);
 
     if (colorKeyAvailable == SDL_TRUE) {
         /* If available, the colorkey will be used to discard the pixels that are outside of the rotated area. */

src/render/software/SDL_triangle.c

@@ -524,7 +524,7 @@ int SDL_SW_BlitTriangle(
 
     bounding_rect_fixedpoint(d0, d1, d2, &dstrect);
 
-    blend = SDL_GetSurfaceBlendMode(src);
+    SDL_GetSurfaceBlendMode(src, &blend);
 
     /* TRIANGLE_GET_TEXTCOORD interpolates up to the max values included, so reduce by 1 */
     {