1 files changed, 66 insertions, 0 deletions
diff --git a/src/mesa/main/multisample.c b/src/mesa/main/multisample.c
new file mode 100644
index 00000000000..e138087436e
--- /dev/null
+++ b/src/mesa/main/multisample.c
@@ -0,0 +1,66 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/macros.h"
+#include "main/multisample.h"
+
+
+/**
+ * Called via glSampleCoverageARB
+ */
+void GLAPIENTRY
+_mesa_SampleCoverageARB(GLclampf value, GLboolean invert)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (!ctx->Extensions.ARB_multisample) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glSampleCoverageARB");
+      return;
+   }
+
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx );
+
+   ctx->Multisample.SampleCoverageValue = (GLfloat) CLAMP(value, 0.0, 1.0);
+   ctx->Multisample.SampleCoverageInvert = invert;
+   ctx->NewState |= _NEW_MULTISAMPLE;
+}
+
+
+/**
+ * Initialize the context's multisample state.
+ * \param ctx  the GL context.
+ */
+void
+_mesa_init_multisample(GLcontext *ctx)
+{
+   ctx->Multisample.Enabled = GL_FALSE;
+   ctx->Multisample.SampleAlphaToCoverage = GL_FALSE;
+   ctx->Multisample.SampleAlphaToOne = GL_FALSE;
+   ctx->Multisample.SampleCoverage = GL_FALSE;
+   ctx->Multisample.SampleCoverageValue = 1.0;
+   ctx->Multisample.SampleCoverageInvert = GL_FALSE;
+}