mesa: added dispatch for GL_NV_conditional_render extension

[mesa.git] / src / mesa / main / accum.c

diff --git a/src/mesa/main/accum.c b/src/mesa/main/accum.c
index a43472fb595e2a07f355dc241999d5ff8525934f..032e13b96ebd63c77fff749b9006ac22470aed2b 100644 (file)
--- a/src/mesa/main/accum.c
+++ b/src/mesa/main/accum.c
@@ -1,21 +1,19 @@
-/* $Id: accum.c,v 1.31 2000/10/31 18:09:44 keithw Exp $ */
-
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
- * 
- * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
- * 
+ * 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
@@ -24,69 +22,101 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-
-#ifdef PC_HEADER
-#include "all.h"
-#else
 #include "glheader.h"
 #include "accum.h"
 #include "context.h"
+#include "imports.h"
 #include "macros.h"
-#include "mem.h"
 #include "state.h"
-#include "types.h"
-#include "swrast/swrast.h"
-#endif
+#include "mtypes.h"
+#include "glapi/dispatch.h"
 
 
+#if FEATURE_accum
 
 
-void
+void GLAPIENTRY
 _mesa_ClearAccum( GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha )
 {
+   GLfloat tmp[4];
    GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glAccum");
+   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 );
 
-   ctx->Accum.ClearColor[0] = CLAMP( red, -1.0, 1.0 );
-   ctx->Accum.ClearColor[1] = CLAMP( green, -1.0, 1.0 );
-   ctx->Accum.ClearColor[2] = CLAMP( blue, -1.0, 1.0 );
-   ctx->Accum.ClearColor[3] = CLAMP( alpha, -1.0, 1.0 );
-   ctx->NewState |= _NEW_ACCUM;
+   if (TEST_EQ_4V(tmp, ctx->Accum.ClearColor))
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_ACCUM);
+   COPY_4FV( ctx->Accum.ClearColor, tmp );
 }
 
 
-void
+static void GLAPIENTRY
 _mesa_Accum( GLenum op, GLfloat value )
 {
    GET_CURRENT_CONTEXT(ctx);
-   GLuint xpos, ypos, width, height;
-   
-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glAccum");
+   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->Visual.AccumRedBits == 0 || ctx->DrawBuffer != ctx->ReadBuffer) {
-      gl_error(ctx, GL_INVALID_OPERATION, "glAccum");
+   if (ctx->DrawBuffer != ctx->ReadBuffer) {
+      /* See GLX_SGI_make_current_read or WGL_ARB_make_current_read,
+       * or GL_EXT_framebuffer_blit.
+       */
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glAccum(different read/draw buffers)");
       return;
    }
 
    if (ctx->NewState)
-      gl_update_state( ctx );
-
-   /* Determine region to operate upon. */
-   if (ctx->Scissor.Enabled) {
-      xpos = ctx->Scissor.X;
-      ypos = ctx->Scissor.Y;
-      width = ctx->Scissor.Width;
-      height = ctx->Scissor.Height;
+      _mesa_update_state(ctx);
+
+   if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+                  "glAccum(incomplete framebuffer)");
+      return;
    }
-   else {
-      /* whole window */
-      xpos = 0;
-      ypos = 0;
-      width = ctx->DrawBuffer->Width;
-      height = ctx->DrawBuffer->Height;
+
+   if (ctx->RenderMode == GL_RENDER) {
+      ctx->Driver.Accum(ctx, op, value);
    }
+}
 
-   if (!ctx->Driver.Accum ||
-       !ctx->Driver.Accum( ctx, op, value, xpos, ypos, width, height ))
-      _swrast_Accum( ctx, op, value, xpos, ypos, width, height );
+
+void
+_mesa_init_accum_dispatch(struct _glapi_table *disp)
+{
+   SET_Accum(disp, _mesa_Accum);
+   SET_ClearAccum(disp, _mesa_ClearAccum);
+}
+
+
+#endif /* FEATURE_accum */
+
+
+void 
+_mesa_init_accum( GLcontext *ctx )
+{
+   /* Accumulate buffer group */
+   ASSIGN_4V( ctx->Accum.ClearColor, 0.0, 0.0, 0.0, 0.0 );
 }