Added support for EXT_blend_equation_separate / ATI_blend_equation_separate.

The internal driver interface was also changed to use
BlendEquationSeparate instead of BlendEquation.

9 files changed, 53 insertions, 27 deletions

diff --git a/src/mesa/drivers/dri/ffb/ffb_state.c b/src/mesa/drivers/dri/ffb/ffb_state.c
index ddda946f4b0..eef7af4e5d3 100644
--- a/src/mesa/drivers/dri/ffb/ffb_state.c
+++ b/src/mesa/drivers/dri/ffb/ffb_state.c
@@ -93,13 +93,16 @@ static void ffbDDAlphaFunc(GLcontext *ctx, GLenum func, GLfloat ref)
 	}
 }
 
-static void ffbDDBlendEquation(GLcontext *ctx, GLenum mode)
+static void ffbDDBlendEquationSeparate(GLcontext *ctx, 
+				       GLenum modeRGB, GLenum modeA)
 {
 
 #ifdef STATE_TRACE
-	fprintf(stderr, "ffbDDBlendEquation: mode(%s)\n", _mesa_lookup_enum_by_nr(mode));
+	fprintf(stderr, "ffbDDBlendEquation: mode(%s)\n", 
+		_mesa_lookup_enum_by_nr(modeRGB));
 #endif
-	FALLBACK( ctx, (mode != GL_FUNC_ADD_EXT), FFB_BADATTR_BLENDEQN);
+	assert( modeRGB == modeA );
+	FALLBACK( ctx, (modeRGB != GL_FUNC_ADD), FFB_BADATTR_BLENDEQN);
 }
 
 static void ffbDDBlendFuncSeparate(GLcontext *ctx, GLenum sfactorRGB,
@@ -1052,7 +1055,7 @@ void ffbDDInitStateFuncs(GLcontext *ctx)
 
 	ctx->Driver.Enable = ffbDDEnable;
 	ctx->Driver.AlphaFunc = ffbDDAlphaFunc;
-	ctx->Driver.BlendEquation = ffbDDBlendEquation;
+	ctx->Driver.BlendEquationSeparate = ffbDDBlendEquationSeparate;
 	ctx->Driver.BlendFuncSeparate = ffbDDBlendFuncSeparate;
 	ctx->Driver.DepthFunc = ffbDDDepthFunc;
 	ctx->Driver.DepthMask = ffbDDDepthMask;
diff --git a/src/mesa/drivers/dri/gamma/gamma_state.c b/src/mesa/drivers/dri/gamma/gamma_state.c
index 519c707a5ab..813ced474b3 100644
--- a/src/mesa/drivers/dri/gamma/gamma_state.c
+++ b/src/mesa/drivers/dri/gamma/gamma_state.c
@@ -177,10 +177,12 @@ static void gammaDDAlphaFunc( GLcontext *ctx, GLenum func, GLfloat ref )
    gmesa->new_state |= GAMMA_NEW_ALPHA;
 }
 
-static void gammaDDBlendEquation( GLcontext *ctx, GLenum mode )
+static void gammaDDBlendEquationSeparate( GLcontext *ctx, 
+					  GLenum modeRGB, GLenum modeA )
 {
    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
 
+   assert( modeRGB == modeA );
    FLUSH_BATCH( gmesa );
 
    gmesa->new_state |= GAMMA_NEW_ALPHA;
@@ -1689,7 +1691,7 @@ void gammaDDInitStateFuncs( GLcontext *ctx )
    ctx->Driver.ColorMask		= gammaDDColorMask;
 
    ctx->Driver.AlphaFunc		= gammaDDAlphaFunc;
-   ctx->Driver.BlendEquation		= gammaDDBlendEquation;
+   ctx->Driver.BlendEquationSeparate	= gammaDDBlendEquationSeparate;
    ctx->Driver.BlendFuncSeparate	= gammaDDBlendFuncSeparate;
    ctx->Driver.ClearDepth		= gammaDDClearDepth;
    ctx->Driver.CullFace			= gammaDDCullFace;
diff --git a/src/mesa/drivers/dri/i810/i810state.c b/src/mesa/drivers/dri/i810/i810state.c
index 9249d0841a0..e00af656f01 100644
--- a/src/mesa/drivers/dri/i810/i810state.c
+++ b/src/mesa/drivers/dri/i810/i810state.c
@@ -75,10 +75,14 @@ static void i810AlphaFunc(GLcontext *ctx, GLenum func, GLfloat ref)
    imesa->Setup[I810_CTXREG_ZA] |= a;
 }
 
-static void i810BlendEquation(GLcontext *ctx, GLenum mode)
+static void i810BlendEquationSeparate(GLcontext *ctx,
+				      GLenum modeRGB, GLenum modeA)
 {
+   assert( modeRGB == modeA );
+
    /* Can only do GL_ADD equation in hardware */
-   FALLBACK( I810_CONTEXT(ctx), I810_FALLBACK_BLEND_EQ, mode != GL_FUNC_ADD_EXT);
+   FALLBACK( I810_CONTEXT(ctx), I810_FALLBACK_BLEND_EQ, 
+	     modeRGB != GL_FUNC_ADD);
 
    /* BlendEquation sets ColorLogicOpEnabled in an unexpected
     * manner.
@@ -961,7 +965,7 @@ void i810InitStateFuncs(GLcontext *ctx)
    /* API callbacks
     */
    ctx->Driver.AlphaFunc = i810AlphaFunc;
-   ctx->Driver.BlendEquation = i810BlendEquation;
+   ctx->Driver.BlendEquationSeparate = i810BlendEquationSeparate;
    ctx->Driver.BlendFuncSeparate = i810BlendFuncSeparate;
    ctx->Driver.ClearColor = i810ClearColor;
    ctx->Driver.ColorMask = i810ColorMask;
diff --git a/src/mesa/drivers/dri/i830/i830_state.c b/src/mesa/drivers/dri/i830/i830_state.c
index 9e8952f09b1..7c80e8b7d27 100644
--- a/src/mesa/drivers/dri/i830/i830_state.c
+++ b/src/mesa/drivers/dri/i830/i830_state.c
@@ -359,19 +359,22 @@ static void i830BlendColor(GLcontext *ctx, const GLfloat color[4])
 					  b);
 }
 
-static void i830BlendEquation(GLcontext *ctx, GLenum mode) 
+static void i830BlendEquationSeparate(GLcontext *ctx,
+				      GLenum modeRGB, GLenum modeA)
 {
    i830ContextPtr imesa = I830_CONTEXT(ctx);
    int func = ENABLE_ALPHA_BLENDFUNC;
 
    if (I830_DEBUG&DEBUG_DRI)
      fprintf(stderr, "%s %s\n", __FUNCTION__,
-	     _mesa_lookup_enum_by_nr(mode));
+	     _mesa_lookup_enum_by_nr(modeRGB));
+
+   assert( modeRGB == modeA );
 
    /* This will catch a logicop blend equation */
    i830EvalLogicOpBlendState(ctx);
 
-   switch(mode) {
+   switch(modeRGB) {
    case GL_FUNC_ADD_EXT: 
       func |= BLENDFUNC_ADD; 
       break;
@@ -1643,7 +1646,7 @@ void i830DDInitStateFuncs(GLcontext *ctx)
    /* API callbacks
     */
    ctx->Driver.AlphaFunc = i830AlphaFunc;
-   ctx->Driver.BlendEquation = i830BlendEquation;
+   ctx->Driver.BlendEquationSeparate = i830BlendEquationSeparate;
    ctx->Driver.BlendFuncSeparate = i830BlendFuncSeparate;
    ctx->Driver.BlendColor = i830BlendColor;
    ctx->Driver.ClearColor = i830ClearColor;
diff --git a/src/mesa/drivers/dri/mga/mgastate.c b/src/mesa/drivers/dri/mga/mgastate.c
index 6e039182aed..47c425d7ca3 100644
--- a/src/mesa/drivers/dri/mga/mgastate.c
+++ b/src/mesa/drivers/dri/mga/mgastate.c
@@ -124,8 +124,10 @@ static void updateBlendLogicOp(GLcontext *ctx)
              mmesa->hw.blend_func == (AC_src_src_alpha_sat | AC_dst_zero) );
 }
 
-static void mgaDDBlendEquation(GLcontext *ctx, GLenum mode)
+static void mgaDDBlendEquationSeparate(GLcontext *ctx, 
+				       GLenum modeRGB, GLenum modeA)
 {
+   assert( modeRGB == modeA );
    updateBlendLogicOp( ctx );
 }
 
@@ -1193,7 +1195,7 @@ void mgaDDInitStateFuncs( GLcontext *ctx )
    ctx->Driver.Enable = mgaDDEnable;
    ctx->Driver.LightModelfv = mgaDDLightModelfv;
    ctx->Driver.AlphaFunc = mgaDDAlphaFunc;
-   ctx->Driver.BlendEquation = mgaDDBlendEquation;
+   ctx->Driver.BlendEquationSeparate = mgaDDBlendEquationSeparate;
    ctx->Driver.BlendFuncSeparate = mgaDDBlendFuncSeparate;
    ctx->Driver.DepthFunc = mgaDDDepthFunc;
    ctx->Driver.DepthMask = mgaDDDepthMask;
diff --git a/src/mesa/drivers/dri/r128/r128_state.c b/src/mesa/drivers/dri/r128/r128_state.c
index 0be7b1bfa80..8ed63dafe9a 100644
--- a/src/mesa/drivers/dri/r128/r128_state.c
+++ b/src/mesa/drivers/dri/r128/r128_state.c
@@ -191,10 +191,12 @@ static void r128DDAlphaFunc( GLcontext *ctx, GLenum func, GLfloat ref )
    rmesa->new_state |= R128_NEW_ALPHA;
 }
 
-static void r128DDBlendEquation( GLcontext *ctx, GLenum mode )
+static void r128DDBlendEquationSeparate( GLcontext *ctx, 
+					 GLenum modeRGB, GLenum modeA )
 {
    r128ContextPtr rmesa = R128_CONTEXT(ctx);
 
+   assert( modeRGB == modeA );
    FLUSH_BATCH( rmesa );
 
    /* BlendEquation sets ColorLogicOpEnabled in an unexpected
@@ -206,7 +208,7 @@ static void r128DDBlendEquation( GLcontext *ctx, GLenum mode )
 
    /* Can only do blend addition, not min, max, subtract, etc. */
    FALLBACK( R128_CONTEXT(ctx), R128_FALLBACK_BLEND_EQ,
-	     mode != GL_FUNC_ADD_EXT);
+	     modeRGB != GL_FUNC_ADD);
 
    rmesa->new_state |= R128_NEW_ALPHA;
 }
@@ -1187,7 +1189,7 @@ void r128DDInitStateFuncs( GLcontext *ctx )
    ctx->Driver.IndexMask		= NULL;
    ctx->Driver.ColorMask		= r128DDColorMask;
    ctx->Driver.AlphaFunc		= r128DDAlphaFunc;
-   ctx->Driver.BlendEquation		= r128DDBlendEquation;
+   ctx->Driver.BlendEquationSeparate	= r128DDBlendEquationSeparate;
    ctx->Driver.BlendFuncSeparate	= r128DDBlendFuncSeparate;
    ctx->Driver.ClearDepth		= r128DDClearDepth;
    ctx->Driver.CullFace			= r128DDCullFace;
diff --git a/src/mesa/drivers/dri/r200/r200_state.c b/src/mesa/drivers/dri/r200/r200_state.c
index 2326c75dbdc..2b61098cc9a 100644
--- a/src/mesa/drivers/dri/r200/r200_state.c
+++ b/src/mesa/drivers/dri/r200/r200_state.c
@@ -104,12 +104,15 @@ static void r200AlphaFunc( GLcontext *ctx, GLenum func, GLfloat ref )
    rmesa->hw.ctx.cmd[CTX_PP_MISC] = pp_misc;
 }
 
-static void r200BlendEquation( GLcontext *ctx, GLenum mode )
+static void r200BlendEquationSeparate( GLcontext *ctx, 
+				       GLenum modeRGB, GLenum modeA )
 {
    r200ContextPtr rmesa = R200_CONTEXT(ctx);
    GLuint b = rmesa->hw.ctx.cmd[CTX_RB3D_BLENDCNTL] & ~R200_COMB_FCN_MASK;
 
-   switch ( mode ) {
+   assert( modeRGB == modeA );
+
+   switch ( modeRGB ) {
    case GL_FUNC_ADD:
    case GL_LOGIC_OP:
       b |= R200_COMB_FCN_ADD_CLAMP;
@@ -2186,7 +2189,7 @@ void r200InitStateFuncs( struct dd_function_table *functions )
    functions->ReadBuffer		= r200ReadBuffer;
 
    functions->AlphaFunc			= r200AlphaFunc;
-   functions->BlendEquation		= r200BlendEquation;
+   functions->BlendEquationSeparate	= r200BlendEquationSeparate;
    functions->BlendFuncSeparate		= r200BlendFuncSeparate;
    functions->ClearColor		= r200ClearColor;
    functions->ClearDepth		= NULL;
diff --git a/src/mesa/drivers/dri/radeon/radeon_state.c b/src/mesa/drivers/dri/radeon/radeon_state.c
index 74e918fd001..25aa3fadfe9 100644
--- a/src/mesa/drivers/dri/radeon/radeon_state.c
+++ b/src/mesa/drivers/dri/radeon/radeon_state.c
@@ -102,13 +102,16 @@ static void radeonAlphaFunc( GLcontext *ctx, GLenum func, GLfloat ref )
    rmesa->hw.ctx.cmd[CTX_PP_MISC] = pp_misc;
 }
 
-static void radeonBlendEquation( GLcontext *ctx, GLenum mode )
+static void radeonBlendEquationSeparate( GLcontext *ctx,
+					 GLenum modeRGB, GLenum modeA )
 {
    radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
    GLuint b = rmesa->hw.ctx.cmd[CTX_RB3D_BLENDCNTL] & ~RADEON_COMB_FCN_MASK;
    GLboolean fallback = GL_FALSE;
 
-   switch ( mode ) {
+   assert( modeRGB == modeA );
+
+   switch ( modeRGB ) {
    case GL_FUNC_ADD:
    case GL_LOGIC_OP:
       b |= RADEON_COMB_FCN_ADD_CLAMP;
@@ -1693,7 +1696,9 @@ static void radeonEnable( GLcontext *ctx, GLenum cap, GLboolean state )
       /* Catch a possible fallback:
        */
       if (state) {
-	 ctx->Driver.BlendEquation( ctx, ctx->Color.BlendEquation );
+	 ctx->Driver.BlendEquationSeparate( ctx,
+					    ctx->Color.BlendEquationRGB,
+					    ctx->Color.BlendEquationA );
 	 ctx->Driver.BlendFuncSeparate( ctx, ctx->Color.BlendSrcRGB,
 					ctx->Color.BlendDstRGB,
 					ctx->Color.BlendSrcRGB,
@@ -2186,7 +2191,7 @@ void radeonInitStateFuncs( GLcontext *ctx )
    ctx->Driver.ReadBuffer		= radeonReadBuffer;
 
    ctx->Driver.AlphaFunc		= radeonAlphaFunc;
-   ctx->Driver.BlendEquation		= radeonBlendEquation;
+   ctx->Driver.BlendEquationSeparate	= radeonBlendEquationSeparate;
    ctx->Driver.BlendFuncSeparate	= radeonBlendFuncSeparate;
    ctx->Driver.ClearColor		= radeonClearColor;
    ctx->Driver.ClearDepth		= radeonClearDepth;
diff --git a/src/mesa/drivers/dri/tdfx/tdfx_state.c b/src/mesa/drivers/dri/tdfx/tdfx_state.c
index 61306981cca..7ef088ca690 100644
--- a/src/mesa/drivers/dri/tdfx/tdfx_state.c
+++ b/src/mesa/drivers/dri/tdfx/tdfx_state.c
@@ -267,10 +267,12 @@ static void tdfxDDAlphaFunc( GLcontext *ctx, GLenum func, GLfloat ref )
    fxMesa->new_state |= TDFX_NEW_ALPHA;
 }
 
-static void tdfxDDBlendEquation( GLcontext *ctx, GLenum mode )
+static void tdfxDDBlendEquationSeparate( GLcontext *ctx, 
+					 GLenum modeRGB, GLenum modeA )
 {
    tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
 
+   assert( modeRGB == modeA );
    FLUSH_BATCH( fxMesa );
    fxMesa->new_state |= TDFX_NEW_ALPHA;
 }
@@ -1387,7 +1389,7 @@ void tdfxDDInitStateFuncs( GLcontext *ctx )
    ctx->Driver.ColorMask		= tdfxDDColorMask;
 
    ctx->Driver.AlphaFunc		= tdfxDDAlphaFunc;
-   ctx->Driver.BlendEquation		= tdfxDDBlendEquation;
+   ctx->Driver.BlendEquationSeparate	= tdfxDDBlendEquationSeparate;
    ctx->Driver.BlendFuncSeparate	= tdfxDDBlendFuncSeparate;
    ctx->Driver.ClearDepth		= tdfxDDClearDepth;
    ctx->Driver.CullFace			= tdfxDDCullFace;