nvnflinger/gpu: implement blending

1 files changed, 15 insertions, 0 deletions

diff --git a/src/video_core/renderer_opengl/present/window_adapt_pass.cpp b/src/video_core/renderer_opengl/present/window_adapt_pass.cpp
index 4d681606b..0328abd70 100644
--- a/src/video_core/renderer_opengl/present/window_adapt_pass.cpp
+++ b/src/video_core/renderer_opengl/present/window_adapt_pass.cpp
@@ -92,6 +92,21 @@ void WindowAdaptPass::DrawToFramebuffer(ProgramManager& program_manager, std::li
     glClear(GL_COLOR_BUFFER_BIT);
 
     for (size_t i = 0; i < layer_count; i++) {
+        switch (framebuffers[i].blending) {
+        case Tegra::BlendMode::Opaque:
+        default:
+            glDisablei(GL_BLEND, 0);
+            break;
+        case Tegra::BlendMode::Premultiplied:
+            glEnablei(GL_BLEND, 0);
+            glBlendFuncSeparatei(0, GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ZERO);
+            break;
+        case Tegra::BlendMode::Coverage:
+            glEnablei(GL_BLEND, 0);
+            glBlendFuncSeparatei(0, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ZERO);
+            break;
+        }
+
         glBindTextureUnit(0, textures[i]);
         glProgramUniformMatrix3x2fv(vert.handle, ModelViewMatrixLocation, 1, GL_FALSE,
                                     matrices[i].data());