Some initial RGB and RGBA floating point texture formats.

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

diff --git a/src/mesa/main/accum.c b/src/mesa/main/accum.c
index 3f4c1f7d682e25329df9ff842df263c2745e4094..315bd33b61da9c01fef9525eda34862f00353d91 100644 (file)
--- a/src/mesa/main/accum.c
+++ b/src/mesa/main/accum.c
@@ -1,10 +1,8 @@
-/* $Id: accum.c,v 1.32 2000/11/22 07:32:16 joukj Exp $ */
-
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  5.1
  *
- * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2003  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"),
@@ -24,52 +22,54 @@
  * 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 "mtypes.h"
-#include "swrast/swrast.h"
-#endif
-
-
 
 
-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 );
+
+   if (TEST_EQ_4V(tmp, ctx->Accum.ClearColor))
+      return;
 
-   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;
+   FLUSH_VERTICES(ctx, _NEW_ACCUM);
+   COPY_4FV( ctx->Accum.ClearColor, tmp );
 }
 
 
-void
+void GLAPIENTRY
 _mesa_Accum( GLenum op, GLfloat value )
 {
    GET_CURRENT_CONTEXT(ctx);
    GLuint xpos, ypos, width, height;
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glAccum");
-
-   if (ctx->Visual.AccumRedBits == 0 || ctx->DrawBuffer != ctx->ReadBuffer) {
-      gl_error(ctx, GL_INVALID_OPERATION, "glAccum");
+   if (ctx->Visual.accumRedBits == 0 || ctx->DrawBuffer != ctx->ReadBuffer) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glAccum");
       return;
    }
 
    if (ctx->NewState)
-      gl_update_state( ctx );
+      _mesa_update_state( ctx );
+
+   if (ctx->RenderMode != GL_RENDER) {
+      /* no-op */
+      return;
+   }
 
    /* Determine region to operate upon. */
    if (ctx->Scissor.Enabled) {
@@ -86,7 +86,12 @@ _mesa_Accum( GLenum op, GLfloat value )
       height = ctx->DrawBuffer->Height;
    }
 
-   if (!ctx->Driver.Accum ||
-       !ctx->Driver.Accum( ctx, op, value, xpos, ypos, width, height ))
-      _swrast_Accum( ctx, op, value, xpos, ypos, width, height );
+   ctx->Driver.Accum( ctx, op, value, xpos, ypos, width, height );
+}
+
+void 
+_mesa_init_accum( GLcontext *ctx )
+{
+   /* Accumulate buffer group */
+   ASSIGN_4V( ctx->Accum.ClearColor, 0.0, 0.0, 0.0, 0.0 );
 }