Fixed bug 4453 - GLES / GLES2: first white renderer clear cmd is drawn as black

src/render/opengles/SDL_render_gles.c

@@ -26,8 +26,8 @@
 #include "SDL_opengles.h"
 #include "../SDL_sysrender.h"
 
-/* To prevent unnecessary window recreation, 
- * these should match the defaults selected in SDL_GL_ResetAttributes 
+/* To prevent unnecessary window recreation,
+ * these should match the defaults selected in SDL_GL_ResetAttributes
  */
 
 #define RENDERER_CONTEXT_MAJOR 1
@@ -170,7 +170,7 @@ static int GLES_LoadFunctions(GLES_RenderData * data)
 #define SDL_PROC_OES(ret,func,params) \
     do { \
         data->func = SDL_GL_GetProcAddress(#func); \
-    } while ( 0 );    
+    } while ( 0 );
 #endif /* __SDL_NOGETPROCADDR__ */
 
 #include "SDL_glesfuncs.h"
@@ -351,7 +351,7 @@ GLES_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
         }
     }
 
-    
+
     if (texture->access == SDL_TEXTUREACCESS_TARGET) {
         if (!renderdata->GL_OES_framebuffer_object_supported) {
             SDL_free(data);
@@ -361,7 +361,7 @@ GLES_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
     } else {
         data->fbo = NULL;
     }
-    
+
 
     renderdata->glGetError();
     renderdata->glEnable(GL_TEXTURE_2D);
@@ -397,7 +397,7 @@ GLES_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
         SDL_free(data);
         return GLES_SetError("glTexImage2D()", result);
     }
-    
+
     texture->driverdata = data;
     return 0;
 }
@@ -1210,6 +1210,8 @@ GLES_CreateRenderer(SDL_Window * window, Uint32 flags)
     data->glEnableClientState(GL_VERTEX_ARRAY);
     data->glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 
+    data->glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+
     data->drawstate.blend = SDL_BLENDMODE_INVALID;
     data->drawstate.color = 0xFFFFFFFF;
     data->drawstate.clear_color = 0xFFFFFFFF;

src/render/opengles2/SDL_render_gles2.c

@@ -30,7 +30,7 @@
 #include "SDL_shaders_gles2.h"
 
 /* To prevent unnecessary window recreation,
- * these should match the defaults selected in SDL_GL_ResetAttributes 
+ * these should match the defaults selected in SDL_GL_ResetAttributes
  */
 #define RENDERER_CONTEXT_MAJOR 2
 #define RENDERER_CONTEXT_MINOR 0
@@ -2076,6 +2076,7 @@ GLES2_CreateRenderer(SDL_Window *window, Uint32 flags)
     renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_EXTERNAL_OES;
 #endif
 
+    /* Set up parameters for rendering */
     data->glActiveTexture(GL_TEXTURE0);
     data->glPixelStorei(GL_PACK_ALIGNMENT, 1);
     data->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
@@ -2083,6 +2084,8 @@ GLES2_CreateRenderer(SDL_Window *window, Uint32 flags)
     data->glEnableVertexAttribArray(GLES2_ATTRIBUTE_POSITION);
     data->glDisableVertexAttribArray(GLES2_ATTRIBUTE_TEXCOORD);
 
+    data->glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+
     data->drawstate.blend = SDL_BLENDMODE_INVALID;
     data->drawstate.color = 0xFFFFFFFF;
     data->drawstate.clear_color = 0xFFFFFFFF;