OpenGL: Support blend equation

1 files changed, 7 insertions, 0 deletions

diff --git a/src/video_core/renderer_opengl/gl_state.cpp b/src/video_core/renderer_opengl/gl_state.cpp
index 02cd9f417..fa141fc9a 100644
--- a/src/video_core/renderer_opengl/gl_state.cpp
+++ b/src/video_core/renderer_opengl/gl_state.cpp
@@ -36,6 +36,8 @@ OpenGLState::OpenGLState() {
     stencil.action_stencil_fail = GL_KEEP;
 
     blend.enabled = false;
+    blend.rgb_equation = GL_FUNC_ADD;
+    blend.a_equation = GL_FUNC_ADD;
     blend.src_rgb_func = GL_ONE;
     blend.dst_rgb_func = GL_ZERO;
     blend.src_a_func = GL_ONE;
@@ -165,6 +167,11 @@ void OpenGLState::Apply() const {
                             blend.src_a_func, blend.dst_a_func);
     }
 
+    if (blend.rgb_equation != cur_state.blend.rgb_equation ||
+            blend.a_equation != cur_state.blend.a_equation) {
+        glBlendEquationSeparate(blend.rgb_equation, blend.a_equation);
+    }
+
     if (logic_op != cur_state.logic_op) {
         glLogicOp(logic_op);
     }