SetDrawColor() and SetDrawBlendMode() are optional

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403389

src/video/SDL_renderer_gl.c

@@ -96,8 +96,6 @@ static int GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
 static void GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
 static void GL_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
                             int numrects, const SDL_Rect * rects);
-static int GL_SetDrawColor(SDL_Renderer * renderer);
-static int GL_SetDrawBlendMode(SDL_Renderer * renderer);
 static int GL_RenderPoint(SDL_Renderer * renderer, int x, int y);
 static int GL_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2,
                          int y2);
@@ -312,8 +310,6 @@ GL_CreateRenderer(SDL_Window * window, Uint32 flags)
     renderer->LockTexture = GL_LockTexture;
     renderer->UnlockTexture = GL_UnlockTexture;
     renderer->DirtyTexture = GL_DirtyTexture;
-    renderer->SetDrawColor = GL_SetDrawColor;
-    renderer->SetDrawBlendMode = GL_SetDrawBlendMode;
     renderer->RenderPoint = GL_RenderPoint;
     renderer->RenderLine = GL_RenderLine;
     renderer->RenderFill = GL_RenderFill;
@@ -1070,18 +1066,6 @@ GL_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture, int numrects,
     }
 }
 
-static int
-GL_SetDrawColor(SDL_Renderer * renderer)
-{
-    return 0;
-}
-
-static int
-GL_SetDrawBlendMode(SDL_Renderer * renderer)
-{
-    return 0;
-}
-
 static int
 GL_RenderPoint(SDL_Renderer * renderer, int x, int y)
 {

src/video/SDL_renderer_sw.c

@@ -59,8 +59,6 @@ static int SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
                           const SDL_Rect * rect, int markDirty, void **pixels,
                           int *pitch);
 static void SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
-static int SW_SetDrawColor(SDL_Renderer * renderer);
-static int SW_SetDrawBlendMode(SDL_Renderer * renderer);
 static int SW_RenderPoint(SDL_Renderer * renderer, int x, int y);
 static int SW_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2,
                          int y2);
@@ -226,8 +224,6 @@ SW_CreateRenderer(SDL_Window * window, Uint32 flags)
     renderer->ActivateRenderer = SW_ActivateRenderer;
     renderer->DisplayModeChanged = SW_DisplayModeChanged;
 
-    renderer->SetDrawColor = SW_SetDrawColor;
-    renderer->SetDrawBlendMode = SW_SetDrawBlendMode;
     renderer->RenderPoint = SW_RenderPoint;
     renderer->RenderLine = SW_RenderLine;
     renderer->RenderFill = SW_RenderFill;
@@ -528,18 +524,6 @@ SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
     }
 }
 
-static int
-SW_SetDrawColor(SDL_Renderer * renderer)
-{
-    return 0;
-}
-
-static int
-SW_SetDrawBlendMode(SDL_Renderer * renderer)
-{
-    return 0;
-}
-
 static int
 SW_RenderPoint(SDL_Renderer * renderer, int x, int y)
 {

src/video/SDL_video.c

@@ -1987,16 +1987,15 @@ SDL_SetRenderDrawColor(Uint8 r, Uint8 g, Uint8 b, Uint8 a)
     if (!renderer) {
         return -1;
     }
-    if (!renderer->SetDrawColor) {
-        SDL_Unsupported();
-        return -1;
-    }
     renderer->r = r;
     renderer->g = g;
     renderer->b = b;
     renderer->a = a;
-    renderer->SetDrawColor(renderer);
+    if (renderer->SetDrawColor) {
-    return 0;
+        return renderer->SetDrawColor(renderer);
+    } else {
+        return 0;
+    }
 }
 
 int
@@ -2012,10 +2011,6 @@ SDL_GetRenderDrawColor(Uint8 * r, Uint8 * g, Uint8 * b, Uint8 * a)
     if (!renderer) {
         return -1;
     }
-    if (!renderer->SetDrawColor) {
-        SDL_Unsupported();
-        return -1;
-    }
     if (r) {
         *r = renderer->r;
     }
@@ -2028,7 +2023,6 @@ SDL_GetRenderDrawColor(Uint8 * r, Uint8 * g, Uint8 * b, Uint8 * a)
     if (a) {
         *a = renderer->a;
     }
-    return 0;
 }
 
 int
@@ -2044,13 +2038,12 @@ SDL_SetRenderDrawBlendMode(int blendMode)
     if (!renderer) {
         return -1;
     }
-    if (!renderer->SetDrawBlendMode) {
-        SDL_Unsupported();
-        return -1;
-    }
     renderer->blendMode = blendMode;
-    renderer->SetDrawBlendMode(renderer);
+    if (renderer->SetDrawBlendMode) {
-    return 0;
+        return renderer->SetDrawBlendMode(renderer);
+    } else {
+        return 0;
+    }
 }
 
 int

src/video/directfb/SDL_DirectFB_render.c

@@ -71,8 +71,6 @@ static void DirectFB_UnlockTexture(SDL_Renderer * renderer,
 static void DirectFB_DirtyTexture(SDL_Renderer * renderer,
                                   SDL_Texture * texture, int numrects,
                                   const SDL_Rect * rects);
-static int DirectFB_SetDrawColor(SDL_Renderer * renderer);
-static int DirectFB_SetDrawBlendMode(SDL_Renderer * renderer);
 static int DirectFB_RenderPoint(SDL_Renderer * renderer, int x, int y);
 static int DirectFB_RenderLine(SDL_Renderer * renderer, int x1, int y1,
                                int x2, int y2);
@@ -294,8 +292,6 @@ DirectFB_CreateRenderer(SDL_Window * window, Uint32 flags)
     renderer->LockTexture = DirectFB_LockTexture;
     renderer->UnlockTexture = DirectFB_UnlockTexture;
     renderer->DirtyTexture = DirectFB_DirtyTexture;
-    renderer->SetDrawColor = DirectFB_SetDrawColor;
-    renderer->SetDrawBlendMode = DirectFB_SetDrawBlendMode;
     renderer->RenderPoint = DirectFB_RenderPoint;
     renderer->RenderLine = DirectFB_RenderLine;
     renderer->RenderFill = DirectFB_RenderFill;
@@ -797,18 +793,6 @@ DirectFB_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
     }
 }
 
-static int
-DirectFB_SetDrawColor(SDL_Renderer * renderer)
-{
-    return 0;
-}
-
-static int
-DirectFB_SetDrawBlendMode(SDL_Renderer * renderer)
-{
-    return 0;
-}
-
 static int
 PrepareDraw(SDL_Renderer * renderer)
 {

src/video/dummy/SDL_nullrender.c

@@ -31,8 +31,6 @@
 
 static SDL_Renderer *SDL_DUMMY_CreateRenderer(SDL_Window * window,
                                               Uint32 flags);
-static int SDL_DUMMY_SetDrawColor(SDL_Renderer * renderer);
-static int SDL_DUMMY_SetDrawBlendMode(SDL_Renderer * renderer);
 static int SDL_DUMMY_RenderPoint(SDL_Renderer * renderer, int x, int y);
 static int SDL_DUMMY_RenderLine(SDL_Renderer * renderer, int x1, int y1,
                                 int x2, int y2);
@@ -93,8 +91,6 @@ SDL_DUMMY_CreateRenderer(SDL_Window * window, Uint32 flags)
     }
     SDL_zerop(data);
 
-    renderer->SetDrawColor = SDL_DUMMY_SetDrawColor;
-    renderer->SetDrawBlendMode = SDL_DUMMY_SetDrawBlendMode;
     renderer->RenderPoint = SDL_DUMMY_RenderPoint;
     renderer->RenderLine = SDL_DUMMY_RenderLine;
     renderer->RenderFill = SDL_DUMMY_RenderFill;
@@ -132,18 +128,6 @@ SDL_DUMMY_CreateRenderer(SDL_Window * window, Uint32 flags)
     return renderer;
 }
 
-static int
-SDL_DUMMY_SetDrawColor(SDL_Renderer * renderer)
-{
-    return 0;
-}
-
-static int
-SDL_DUMMY_SetDrawBlendMode(SDL_Renderer * renderer)
-{
-    return 0;
-}
-
 static int
 SDL_DUMMY_RenderPoint(SDL_Renderer * renderer, int x, int y)
 {

src/video/win32/SDL_gdirender.c

@@ -55,6 +55,7 @@ static int GDI_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
                            const SDL_Rect * rect, int markDirty,
                            void **pixels, int *pitch);
 static void GDI_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
+static int GDI_SetDrawBlendMode(SDL_Renderer * renderer);
 static int GDI_RenderPoint(SDL_Renderer * renderer, int x, int y);
 static int GDI_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2,
                           int y2);
@@ -175,6 +176,7 @@ GDI_CreateRenderer(SDL_Window * window, Uint32 flags)
     renderer->UpdateTexture = GDI_UpdateTexture;
     renderer->LockTexture = GDI_LockTexture;
     renderer->UnlockTexture = GDI_UnlockTexture;
+    renderer->SetDrawBlendMode = GDI_SetDrawBlendMode;
     renderer->RenderPoint = GDI_RenderPoint;
     renderer->RenderLine = GDI_RenderLine;
     renderer->RenderFill = GDI_RenderFill;
@@ -573,6 +575,19 @@ GDI_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
     }
 }
 
+static int
+GDI_SetDrawBlendMode(SDL_Renderer * renderer)
+{
+    switch (renderer->blendMode) {
+    case SDL_BLENDMODE_NONE:
+        return 0;
+    default:
+        SDL_Unsupported();
+        renderer->blendMode = SDL_BLENDMODE_NONE;
+        return -1;
+    }
+}
+
 static int
 GDI_RenderPoint(SDL_Renderer * renderer, int x, int y)
 {

src/video/x11/SDL_x11render.c

@@ -47,7 +47,6 @@ static int X11_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
                            const SDL_Rect * rect, int markDirty,
                            void **pixels, int *pitch);
 static void X11_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
-static int X11_SetDrawColor(SDL_Renderer * renderer);
 static int X11_SetDrawBlendMode(SDL_Renderer * renderer);
 static int X11_RenderPoint(SDL_Renderer * renderer, int x, int y);
 static int X11_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2,
@@ -197,7 +196,6 @@ X11_CreateRenderer(SDL_Window * window, Uint32 flags)
     renderer->UpdateTexture = X11_UpdateTexture;
     renderer->LockTexture = X11_LockTexture;
     renderer->UnlockTexture = X11_UnlockTexture;
-    renderer->SetDrawColor = X11_SetDrawColor;
     renderer->SetDrawBlendMode = X11_SetDrawBlendMode;
     renderer->RenderPoint = X11_RenderPoint;
     renderer->RenderLine = X11_RenderLine;
@@ -563,12 +561,6 @@ X11_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
     }
 }
 
-static int
-X11_SetDrawColor(SDL_Renderer * renderer)
-{
-    return 0;
-}
-
 static int
 X11_SetDrawBlendMode(SDL_Renderer * renderer)
 {