Fixed OpenGL ES primitive alpha blending.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%404069

src/video/SDL_renderer_gles.c

@@ -661,8 +661,6 @@ GLES_RenderPoint(SDL_Renderer * renderer, int x, int y)
     data->glDrawArrays(GL_POINTS, 0, 1);
     data->glDisableClientState(GL_VERTEX_ARRAY);
 
-    data->glDisable(GL_BLEND);
-
     return 0;
 }
 
@@ -689,8 +687,6 @@ GLES_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2, int y2)
     data->glDrawArrays(GL_LINES, 0, 2);
     data->glDisableClientState(GL_VERTEX_ARRAY);
 
-    data->glDisable(GL_BLEND);
-
     return 0;
 }
 
@@ -726,8 +722,6 @@ GLES_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect)
     data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
     data->glDisableClientState(GL_VERTEX_ARRAY);
 
-    data->glDisable(GL_BLEND);
-
     return 0;
 }