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authorReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
committerReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
commitf4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch)
tree2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/extras/Mesa/src/mesa/main/accum.c
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
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Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/main/accum.c')
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diff --git a/nx-X11/extras/Mesa/src/mesa/main/accum.c b/nx-X11/extras/Mesa/src/mesa/main/accum.c
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+++ b/nx-X11/extras/Mesa/src/mesa/main/accum.c
@@ -0,0 +1,110 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5
+ *
+ * Copyright (C) 1999-2005 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 "glheader.h"
+#include "accum.h"
+#include "context.h"
+#include "imports.h"
+#include "macros.h"
+#include "state.h"
+#include "mtypes.h"
+
+
+void GLAPIENTRY
+_mesa_ClearAccum( GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha )
+{
+ GLfloat tmp[4];
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ tmp[0] = CLAMP( red, -1.0F, 1.0F );
+ tmp[1] = CLAMP( green, -1.0F, 1.0F );
+ tmp[2] = CLAMP( blue, -1.0F, 1.0F );
+ tmp[3] = CLAMP( alpha, -1.0F, 1.0F );
+
+ if (TEST_EQ_4V(tmp, ctx->Accum.ClearColor))
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_ACCUM);
+ COPY_4FV( ctx->Accum.ClearColor, tmp );
+}
+
+
+void GLAPIENTRY
+_mesa_Accum( GLenum op, GLfloat value )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ switch (op) {
+ case GL_ADD:
+ case GL_MULT:
+ case GL_ACCUM:
+ case GL_LOAD:
+ case GL_RETURN:
+ /* OK */
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glAccum(op)");
+ return;
+ }
+
+ if (ctx->DrawBuffer->Visual.haveAccumBuffer == 0) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glAccum(no accum buffer)");
+ return;
+ }
+
+ if (ctx->DrawBuffer != ctx->ReadBuffer) {
+ /* See GLX_SGI_make_current_read or WGL_ARB_make_current_read */
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glAccum(different read/draw buffers)");
+ return;
+ }
+
+ if (ctx->NewState)
+ _mesa_update_state(ctx);
+
+ if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+ "glAccum(incomplete framebuffer)");
+ return;
+ }
+
+ if (ctx->RenderMode == GL_RENDER) {
+ GLint x = ctx->DrawBuffer->_Xmin;
+ GLint y = ctx->DrawBuffer->_Ymin;
+ GLint width = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin;
+ GLint height = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin;
+ ctx->Driver.Accum(ctx, op, value, x, y, width, height);
+ }
+}
+
+
+
+void
+_mesa_init_accum( GLcontext *ctx )
+{
+ /* Accumulate buffer group */
+ ASSIGN_4V( ctx->Accum.ClearColor, 0.0, 0.0, 0.0, 0.0 );
+}