X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbackends%2Fopengl%2Fpipelinestate_backend.cpp;h=204e8139f0fc70802aaf3592b68a60779a124bae;hb=9eb9f592d37e9a1e05c2ff70887a1c5f26b98864;hp=a2b8ab32717555bc329b85a515f2b58818738ff0;hpb=2a70fecfbbe8708be2bdaa75d222dd5a889a8ed3;p=libs%2Fgl.git

diff --git a/source/backends/opengl/pipelinestate_backend.cpp b/source/backends/opengl/pipelinestate_backend.cpp
index a2b8ab32..204e8139 100644
--- a/source/backends/opengl/pipelinestate_backend.cpp
+++ b/source/backends/opengl/pipelinestate_backend.cpp
@@ -4,6 +4,7 @@
 #include <msp/gl/extensions/arb_shader_objects.h>
 #include <msp/gl/extensions/arb_uniform_buffer_object.h>
 #include <msp/gl/extensions/arb_vertex_array_object.h>
+#include <msp/gl/extensions/arb_tessellation_shader.h>
 #include <msp/gl/extensions/ext_framebuffer_object.h>
 #include <msp/gl/extensions/msp_primitive_restart.h>
 #include "blend.h"
@@ -180,6 +181,13 @@ void OpenGLPipelineState::apply() const
 		}
 	}
 
+	if(changes&PipelineState::PATCH_SIZE)
+		if(self.patch_size)
+		{
+			static Require _req(ARB_tessellation_shader);
+			glPatchParameteri(GL_PATCH_VERTICES, self.patch_size);
+		}
+
 	if(changes&PipelineState::FACE_CULL)
 	{
 		glFrontFace(self.front_face==CLOCKWISE ? GL_CW : GL_CCW);
@@ -237,6 +245,11 @@ void OpenGLPipelineState::apply() const
 			glDisable(GL_BLEND);
 			glColorMask(true, true, true, true);
 		}
+
+		if(blend.alpha_to_coverage && self.framebuffer && self.framebuffer->get_format().get_samples()>1)
+			glEnable(GL_SAMPLE_ALPHA_TO_COVERAGE);
+		else
+			glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE);
 	}
 
 	applied_to = &device;