OGL/Vulkan: Drop dual pass alpha.

2 files changed, 0 insertions, 53 deletions

diff --git a/Source/Core/VideoBackends/OGL/VertexManager.cpp b/Source/Core/VideoBackends/OGL/VertexManager.cpp
index 6b18517555..3c31f01c5e 100644
--- a/Source/Core/VideoBackends/OGL/VertexManager.cpp
+++ b/Source/Core/VideoBackends/OGL/VertexManager.cpp
@@ -171,38 +171,6 @@ void VertexManager::vFlush(bool useDstAlpha)
 
   Draw(stride);
 
-  // If the GPU does not support dual-source blending, we can approximate the effect by drawing
-  // the object a second time, with the write mask set to alpha only using a shader that outputs
-  // the destination/constant alpha value (which would normally be SRC_COLOR.a).
-  //
-  // This is also used when logic ops and destination alpha is enabled, since we can't enable
-  // blending and logic ops concurrently.
-  bool logic_op_enabled = (bpmem.blendmode.logicopenable && !bpmem.blendmode.blendenable &&
-                           GLInterface->GetMode() == GLInterfaceMode::MODE_OPENGL);
-  if (useDstAlpha && (!dualSourcePossible || logic_op_enabled))
-  {
-    ProgramShaderCache::SetShader(DSTALPHA_ALPHA_PASS, m_current_primitive_type);
-
-    // only update alpha
-    glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE);
-
-    glDisable(GL_BLEND);
-
-    if (logic_op_enabled)
-      glDisable(GL_COLOR_LOGIC_OP);
-
-    Draw(stride);
-
-    // restore color mask
-    g_renderer->SetColorMask();
-
-    if (bpmem.blendmode.blendenable || bpmem.blendmode.subtract)
-      glEnable(GL_BLEND);
-
-    if (logic_op_enabled)
-      glEnable(GL_COLOR_LOGIC_OP);
-  }
-
 #if defined(_DEBUG) || defined(DEBUGFAST)
   if (g_ActiveConfig.iLog & CONF_SAVESHADERS)
   {
diff --git a/Source/Core/VideoBackends/Vulkan/VertexManager.cpp b/Source/Core/VideoBackends/Vulkan/VertexManager.cpp
index f3116a8cb6..251c3651ab 100644
--- a/Source/Core/VideoBackends/Vulkan/VertexManager.cpp
+++ b/Source/Core/VideoBackends/Vulkan/VertexManager.cpp
@@ -202,27 +202,6 @@ void VertexManager::vFlush(bool use_dst_alpha)
   vkCmdDrawIndexed(g_command_buffer_mgr->GetCurrentCommandBuffer(), index_count, 1,
                    m_current_draw_base_index, m_current_draw_base_vertex, 0);
 
-  // If the GPU does not support dual-source blending, we can approximate the effect by drawing
-  // the object a second time, with the write mask set to alpha only using a shader that outputs
-  // the destination/constant alpha value (which would normally be SRC_COLOR.a).
-  //
-  // This is also used when logic ops and destination alpha is enabled, since we can't enable
-  // blending and logic ops concurrently (and the logical operation applies to all channels).
-  bool logic_op_enabled = bpmem.blendmode.logicopenable && !bpmem.blendmode.blendenable;
-  if (use_dst_alpha && (!g_vulkan_context->SupportsDualSourceBlend() || logic_op_enabled))
-  {
-    StateTracker::GetInstance()->CheckForShaderChanges(m_current_primitive_type,
-                                                       DSTALPHA_ALPHA_PASS);
-    if (!StateTracker::GetInstance()->Bind())
-    {
-      WARN_LOG(VIDEO, "Skipped draw of %u indices (alpha pass)", index_count);
-      return;
-    }
-
-    vkCmdDrawIndexed(g_command_buffer_mgr->GetCurrentCommandBuffer(), index_count, 1,
-                     m_current_draw_base_index, m_current_draw_base_vertex, 0);
-  }
-
   StateTracker::GetInstance()->OnDraw();
 }