tev-buffer.patch

diff --git a/src/video_core/renderer_opengl/gl_shaders.h b/src/video_core/renderer_opengl/gl_shaders.h
index a8cb2f5..c18bb65 100644
--- a/src/video_core/renderer_opengl/gl_shaders.h
+++ b/src/video_core/renderer_opengl/gl_shaders.h
@@ -144,7 +144,7 @@ struct TEVConfig
 
 uniform TEVConfig tev_cfgs[NUM_TEV_STAGES];
 
-vec4 g_combiner_buffer;
+vec4 g_combiner_buffer = vec4(0.0);
 vec4 g_last_tex_env_out;
 vec4 g_const_color;
 
@@ -270,7 +270,7 @@ float AlphaCombine(int op, float alpha[3]) {
 }
 
 void main(void) {
-    g_combiner_buffer = tev_combiner_buffer_color;
+    vec4 combiner_buffer_next = tev_combiner_buffer_color;
 
     for (int tex_env_idx = 0; tex_env_idx < NUM_TEV_STAGES; ++tex_env_idx) {
         if (tev_cfgs[tex_env_idx].enabled) {
@@ -289,12 +289,14 @@ void main(void) {
             g_last_tex_env_out = vec4(min(color_output * tev_cfgs[tex_env_idx].color_alpha_multiplier.x, 1.0), min(alpha_output * tev_cfgs[tex_env_idx].color_alpha_multiplier.y, 1.0));
         }
 
+        g_combiner_buffer = combiner_buffer_next;
+
         if (tev_cfgs[tex_env_idx].updates_combiner_buffer_color_alpha.x) {
-            g_combiner_buffer.rgb = g_last_tex_env_out.rgb;
+            combiner_buffer_next.rgb = g_last_tex_env_out.rgb;
         }
 
         if (tev_cfgs[tex_env_idx].updates_combiner_buffer_color_alpha.y) {
-            g_combiner_buffer.a = g_last_tex_env_out.a;
+            combiner_buffer_next.a = g_last_tex_env_out.a;
         }
     }