1 files changed, 90 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_cb_accum.c b/src/mesa/state_tracker/st_cb_accum.c
new file mode 100644
index 0000000000..c8fef6c135
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_accum.c
@@ -0,0 +1,90 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ * 
+ **************************************************************************/
+
+ /*
+  * Authors:
+  *   Brian Paul
+  */
+
+#include "main/imports.h"
+#include "main/image.h"
+#include "main/macros.h"
+
+#include "st_context.h"
+#include "st_atom.h"
+#include "st_cache.h"
+#include "st_draw.h"
+#include "st_program.h"
+#include "st_cb_accum.h"
+#include "st_draw.h"
+#include "st_format.h"
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+
+
+
+static void
+st_Accum(GLcontext *ctx, GLenum op, GLfloat value)
+{
+   const GLint xpos = ctx->DrawBuffer->_Xmin;
+   const GLint ypos = ctx->DrawBuffer->_Ymin;
+   const GLint width = ctx->DrawBuffer->_Xmax - xpos;
+   const GLint height = ctx->DrawBuffer->_Ymax - ypos;
+
+   switch (op) {
+   case GL_ADD:
+      if (value != 0.0F) {
+         accum_add(ctx, value, xpos, ypos, width, height);
+      }
+      break;
+   case GL_MULT:
+      if (value != 1.0F) {
+         accum_mult(ctx, value, xpos, ypos, width, height);
+      }
+      break;
+   case GL_ACCUM:
+      if (value != 0.0F) {
+         accum_accum(ctx, value, xpos, ypos, width, height);
+      }
+      break;
+   case GL_LOAD:
+      accum_load(ctx, value, xpos, ypos, width, height);
+      break;
+   case GL_RETURN:
+      accum_return(ctx, value, xpos, ypos, width, height);
+      break;
+   default:
+      assert(0);
+   }
+}
+
+
+
+void st_init_accum_functions(struct dd_function_table *functions)
+{
+   functions->Accum = st_Accum;
+}