-/* $Id: blend.c,v 1.26 2000/11/22 07:32:16 joukj Exp $ */
+/* $Id: blend.c,v 1.34 2001/09/14 21:36:43 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
*
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2001 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"),
*/
-
#ifdef PC_HEADER
#include "all.h"
#else
#include "glheader.h"
#include "blend.h"
+#include "colormac.h"
#include "context.h"
#include "enums.h"
#include "macros.h"
void
_mesa_BlendFunc( GLenum sfactor, GLenum dfactor )
{
+
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glBlendFunc");
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
fprintf(stderr, "glBlendFunc %s %s\n",
- gl_lookup_enum_by_nr(sfactor),
- gl_lookup_enum_by_nr(dfactor));
+ _mesa_lookup_enum_by_nr(sfactor),
+ _mesa_lookup_enum_by_nr(dfactor));
switch (sfactor) {
case GL_SRC_COLOR:
case GL_ONE_MINUS_SRC_COLOR:
if (!ctx->Extensions.NV_blend_square) {
- gl_error( ctx, GL_INVALID_ENUM, "glBlendFunc(sfactor)" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glBlendFunc(sfactor)" );
return;
}
/* fall-through */
case GL_ONE_MINUS_CONSTANT_COLOR:
case GL_CONSTANT_ALPHA:
case GL_ONE_MINUS_CONSTANT_ALPHA:
- ctx->Color.BlendSrcRGB = ctx->Color.BlendSrcA = sfactor;
break;
default:
- gl_error( ctx, GL_INVALID_ENUM, "glBlendFunc(sfactor)" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glBlendFunc(sfactor)" );
return;
}
case GL_DST_COLOR:
case GL_ONE_MINUS_DST_COLOR:
if (!ctx->Extensions.NV_blend_square) {
- gl_error( ctx, GL_INVALID_ENUM, "glBlendFunc(dfactor)" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glBlendFunc(dfactor)" );
return;
}
/* fall-through */
case GL_ONE_MINUS_CONSTANT_COLOR:
case GL_CONSTANT_ALPHA:
case GL_ONE_MINUS_CONSTANT_ALPHA:
- ctx->Color.BlendDstRGB = ctx->Color.BlendDstA = dfactor;
break;
default:
- gl_error( ctx, GL_INVALID_ENUM, "glBlendFunc(dfactor)" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glBlendFunc(dfactor)" );
return;
}
- if (ctx->Driver.BlendFunc) {
- (*ctx->Driver.BlendFunc)( ctx, sfactor, dfactor );
- }
+ if (ctx->Color.BlendDstRGB == dfactor &&
+ ctx->Color.BlendSrcRGB == sfactor &&
+ ctx->Color.BlendDstA == dfactor &&
+ ctx->Color.BlendSrcA == sfactor)
+ return;
- ctx->NewState |= _NEW_COLOR;
+ FLUSH_VERTICES(ctx, _NEW_COLOR);
+ ctx->Color.BlendDstRGB = ctx->Color.BlendDstA = dfactor;
+ ctx->Color.BlendSrcRGB = ctx->Color.BlendSrcA = sfactor;
+
+ if (ctx->Driver.BlendFunc)
+ ctx->Driver.BlendFunc( ctx, sfactor, dfactor );
}
GLenum sfactorA, GLenum dfactorA )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glBlendFuncSeparate");
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
- fprintf(stderr, "glBlendFuncSeperate %s %s %s %s\n",
- gl_lookup_enum_by_nr(sfactorRGB),
- gl_lookup_enum_by_nr(dfactorRGB),
- gl_lookup_enum_by_nr(sfactorA),
- gl_lookup_enum_by_nr(dfactorA));
+ fprintf(stderr, "glBlendFuncSeparate %s %s %s %s\n",
+ _mesa_lookup_enum_by_nr(sfactorRGB),
+ _mesa_lookup_enum_by_nr(dfactorRGB),
+ _mesa_lookup_enum_by_nr(sfactorA),
+ _mesa_lookup_enum_by_nr(dfactorA));
switch (sfactorRGB) {
case GL_SRC_COLOR:
case GL_ONE_MINUS_SRC_COLOR:
if (!ctx->Extensions.NV_blend_square) {
- gl_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(sfactorRGB)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(sfactorRGB)");
return;
}
/* fall-through */
case GL_ONE_MINUS_CONSTANT_COLOR:
case GL_CONSTANT_ALPHA:
case GL_ONE_MINUS_CONSTANT_ALPHA:
- ctx->Color.BlendSrcRGB = sfactorRGB;
break;
default:
- gl_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(sfactorRGB)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(sfactorRGB)");
return;
}
case GL_DST_COLOR:
case GL_ONE_MINUS_DST_COLOR:
if (!ctx->Extensions.NV_blend_square) {
- gl_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(dfactorRGB)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(dfactorRGB)");
return;
}
/* fall-through */
case GL_ONE_MINUS_CONSTANT_COLOR:
case GL_CONSTANT_ALPHA:
case GL_ONE_MINUS_CONSTANT_ALPHA:
- ctx->Color.BlendDstRGB = dfactorRGB;
break;
default:
- gl_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(dfactorRGB)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(dfactorRGB)");
return;
}
case GL_SRC_COLOR:
case GL_ONE_MINUS_SRC_COLOR:
if (!ctx->Extensions.NV_blend_square) {
- gl_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(sfactorA)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(sfactorA)");
return;
}
/* fall-through */
case GL_ONE_MINUS_CONSTANT_COLOR:
case GL_CONSTANT_ALPHA:
case GL_ONE_MINUS_CONSTANT_ALPHA:
- ctx->Color.BlendSrcA = sfactorA;
break;
default:
- gl_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(sfactorA)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(sfactorA)");
return;
}
case GL_DST_COLOR:
case GL_ONE_MINUS_DST_COLOR:
if (!ctx->Extensions.NV_blend_square) {
- gl_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(dfactorA)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(dfactorA)");
return;
}
/* fall-through */
case GL_ONE_MINUS_CONSTANT_COLOR:
case GL_CONSTANT_ALPHA:
case GL_ONE_MINUS_CONSTANT_ALPHA:
- ctx->Color.BlendDstA = dfactorA;
break;
default:
- gl_error( ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(dfactorA)" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glBlendFuncSeparate(dfactorA)" );
return;
}
- ctx->NewState |= _NEW_COLOR;
+ if (ctx->Color.BlendSrcRGB == sfactorRGB &&
+ ctx->Color.BlendDstRGB == dfactorRGB &&
+ ctx->Color.BlendSrcA == sfactorA &&
+ ctx->Color.BlendDstA == dfactorA)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_COLOR);
+
+ ctx->Color.BlendSrcRGB = sfactorRGB;
+ ctx->Color.BlendDstRGB = dfactorRGB;
+ ctx->Color.BlendSrcA = sfactorA;
+ ctx->Color.BlendDstA = dfactorA;
if (ctx->Driver.BlendFuncSeparate) {
(*ctx->Driver.BlendFuncSeparate)( ctx, sfactorRGB, dfactorRGB,
_mesa_BlendEquation( GLenum mode )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glBlendEquation");
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
fprintf(stderr, "glBlendEquation %s\n",
- gl_lookup_enum_by_nr(mode));
+ _mesa_lookup_enum_by_nr(mode));
switch (mode) {
+ case GL_FUNC_ADD_EXT:
+ break;
case GL_MIN_EXT:
case GL_MAX_EXT:
- case GL_FUNC_ADD_EXT:
- if (ctx->Extensions.EXT_blend_minmax) {
- ctx->Color.BlendEquation = mode;
- }
- else {
- gl_error(ctx, GL_INVALID_ENUM, "glBlendEquation");
+ if (!ctx->Extensions.EXT_blend_minmax &&
+ !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquation");
return;
}
+ break;
case GL_LOGIC_OP:
- ctx->Color.BlendEquation = mode;
+ if (!ctx->Extensions.EXT_blend_logic_op) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquation");
+ return;
+ }
break;
case GL_FUNC_SUBTRACT_EXT:
case GL_FUNC_REVERSE_SUBTRACT_EXT:
- if (ctx->Extensions.EXT_blend_subtract) {
- ctx->Color.BlendEquation = mode;
- }
- else {
- gl_error(ctx, GL_INVALID_ENUM, "glBlendEquation");
+ if (!ctx->Extensions.EXT_blend_subtract &&
+ !ctx->Extensions.ARB_imaging) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquation");
return;
}
break;
default:
- gl_error( ctx, GL_INVALID_ENUM, "glBlendEquation" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glBlendEquation" );
return;
}
+ if (ctx->Color.BlendEquation == mode)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_COLOR);
+ ctx->Color.BlendEquation = mode;
+
/* This is needed to support 1.1's RGB logic ops AND
* 1.0's blending logicops.
*/
- if (mode==GL_LOGIC_OP && ctx->Color.BlendEnabled) {
- ctx->Color.ColorLogicOpEnabled = GL_TRUE;
- }
- else {
- ctx->Color.ColorLogicOpEnabled = GL_FALSE;
- }
-
- ctx->NewState |= _NEW_COLOR;
+ ctx->Color.ColorLogicOpEnabled = (mode==GL_LOGIC_OP &&
+ ctx->Color.BlendEnabled);
if (ctx->Driver.BlendEquation)
- ctx->Driver.BlendEquation( ctx, mode );
+ (*ctx->Driver.BlendEquation)( ctx, mode );
}
void
_mesa_BlendColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha )
{
+ GLfloat tmp[4];
GET_CURRENT_CONTEXT(ctx);
- ctx->Color.BlendColor[0] = CLAMP( red, 0.0F, 1.0F );
- ctx->Color.BlendColor[1] = CLAMP( green, 0.0F, 1.0F );
- ctx->Color.BlendColor[2] = CLAMP( blue, 0.0F, 1.0F );
- ctx->Color.BlendColor[3] = CLAMP( alpha, 0.0F, 1.0F );
- ctx->NewState |= _NEW_COLOR;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ tmp[0] = CLAMP( red, 0.0F, 1.0F );
+ tmp[1] = CLAMP( green, 0.0F, 1.0F );
+ tmp[2] = CLAMP( blue, 0.0F, 1.0F );
+ tmp[3] = CLAMP( alpha, 0.0F, 1.0F );
+
+ if (TEST_EQ_4V(tmp, ctx->Color.BlendColor))
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_COLOR);
+ COPY_4FV( ctx->Color.BlendColor, tmp );
+
+ if (ctx->Driver.BlendColor)
+ (*ctx->Driver.BlendColor)(ctx, tmp);
}
+
+void
+_mesa_AlphaFunc( GLenum func, GLclampf ref )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLchan cref;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ switch (func) {
+ case GL_NEVER:
+ case GL_LESS:
+ case GL_EQUAL:
+ case GL_LEQUAL:
+ case GL_GREATER:
+ case GL_NOTEQUAL:
+ case GL_GEQUAL:
+ case GL_ALWAYS:
+ /* convert float alpha ref to GLchan type */
+ UNCLAMPED_FLOAT_TO_CHAN(cref, ref);
+
+ if (ctx->Color.AlphaFunc == func && ctx->Color.AlphaRef == cref)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_COLOR);
+ ctx->Color.AlphaFunc = func;
+ ctx->Color.AlphaRef = cref;
+
+ if (ctx->Driver.AlphaFunc)
+ ctx->Driver.AlphaFunc(ctx, func, cref);
+ return;
+
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glAlphaFunc(func)" );
+ return;
+ }
+}
+
+
+void
+_mesa_LogicOp( GLenum opcode )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ switch (opcode) {
+ case GL_CLEAR:
+ case GL_SET:
+ case GL_COPY:
+ case GL_COPY_INVERTED:
+ case GL_NOOP:
+ case GL_INVERT:
+ case GL_AND:
+ case GL_NAND:
+ case GL_OR:
+ case GL_NOR:
+ case GL_XOR:
+ case GL_EQUIV:
+ case GL_AND_REVERSE:
+ case GL_AND_INVERTED:
+ case GL_OR_REVERSE:
+ case GL_OR_INVERTED:
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glLogicOp" );
+ return;
+ }
+
+ if (ctx->Color.LogicOp == opcode)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_COLOR);
+ ctx->Color.LogicOp = opcode;
+
+ if (ctx->Driver.LogicOpcode)
+ ctx->Driver.LogicOpcode( ctx, opcode );
+}
+
+
+void
+_mesa_IndexMask( GLuint mask )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (ctx->Color.IndexMask == mask)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_COLOR);
+ ctx->Color.IndexMask = mask;
+
+ if (ctx->Driver.IndexMask)
+ ctx->Driver.IndexMask( ctx, mask );
+}
+
+
+void
+_mesa_ColorMask( GLboolean red, GLboolean green,
+ GLboolean blue, GLboolean alpha )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLubyte tmp[4];
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ fprintf(stderr, "glColorMask %d %d %d %d\n", red, green, blue, alpha);
+
+ /* Shouldn't have any information about channel depth in core mesa
+ * -- should probably store these as the native booleans:
+ */
+ tmp[RCOMP] = red ? 0xff : 0x0;
+ tmp[GCOMP] = green ? 0xff : 0x0;
+ tmp[BCOMP] = blue ? 0xff : 0x0;
+ tmp[ACOMP] = alpha ? 0xff : 0x0;
+
+ if (TEST_EQ_4UBV(tmp, ctx->Color.ColorMask))
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_COLOR);
+ COPY_4UBV(ctx->Color.ColorMask, tmp);
+
+ if (ctx->Driver.ColorMask)
+ ctx->Driver.ColorMask( ctx, red, green, blue, alpha );
+}
projects / mesa.git / blobdiff