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Diffstat (limited to 'src/mesa/swrast/s_blend.c')
-rw-r--r--src/mesa/swrast/s_blend.c118
1 files changed, 93 insertions, 25 deletions
diff --git a/src/mesa/swrast/s_blend.c b/src/mesa/swrast/s_blend.c
index 9f550223ee..3500dfb43e 100644
--- a/src/mesa/swrast/s_blend.c
+++ b/src/mesa/swrast/s_blend.c
@@ -60,7 +60,8 @@ blend_noop( GLcontext *ctx, GLuint n, const GLubyte mask[],
GLchan rgba[][4], CONST GLchan dest[][4] )
{
GLuint i;
- ASSERT(ctx->Color.BlendEquation==GL_FUNC_ADD_EXT);
+ ASSERT(ctx->Color.BlendEquationRGB==GL_FUNC_ADD);
+ ASSERT(ctx->Color.BlendEquationA==GL_FUNC_ADD);
ASSERT(ctx->Color.BlendSrcRGB==GL_ZERO);
ASSERT(ctx->Color.BlendDstRGB==GL_ONE);
(void) ctx;
@@ -80,7 +81,8 @@ static void _BLENDAPI
blend_replace( GLcontext *ctx, GLuint n, const GLubyte mask[],
GLchan rgba[][4], CONST GLchan dest[][4] )
{
- ASSERT(ctx->Color.BlendEquation==GL_FUNC_ADD_EXT);
+ ASSERT(ctx->Color.BlendEquatioRGB==GL_FUNC_ADD);
+ ASSERT(ctx->Color.BlendEquationA==GL_FUNC_ADD);
ASSERT(ctx->Color.BlendSrcRGB==GL_ONE);
ASSERT(ctx->Color.BlendDstRGB==GL_ZERO);
(void) ctx;
@@ -99,7 +101,8 @@ blend_transparency( GLcontext *ctx, GLuint n, const GLubyte mask[],
GLchan rgba[][4], CONST GLchan dest[][4] )
{
GLuint i;
- ASSERT(ctx->Color.BlendEquation==GL_FUNC_ADD_EXT);
+ ASSERT(ctx->Color.BlendEquatioRGB==GL_FUNC_ADD);
+ ASSERT(ctx->Color.BlendEquationA==GL_FUNC_ADD);
ASSERT(ctx->Color.BlendSrcRGB==GL_SRC_ALPHA);
ASSERT(ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA);
(void) ctx;
@@ -186,7 +189,8 @@ blend_add( GLcontext *ctx, GLuint n, const GLubyte mask[],
GLchan rgba[][4], CONST GLchan dest[][4] )
{
GLuint i;
- ASSERT(ctx->Color.BlendEquation==GL_FUNC_ADD_EXT);
+ ASSERT(ctx->Color.BlendEquatioRGB==GL_FUNC_ADD);
+ ASSERT(ctx->Color.BlendEquationA==GL_FUNC_ADD);
ASSERT(ctx->Color.BlendSrcRGB==GL_ONE);
ASSERT(ctx->Color.BlendDstRGB==GL_ONE);
(void) ctx;
@@ -224,7 +228,8 @@ blend_min( GLcontext *ctx, GLuint n, const GLubyte mask[],
GLchan rgba[][4], CONST GLchan dest[][4] )
{
GLuint i;
- ASSERT(ctx->Color.BlendEquation==GL_MIN_EXT);
+ ASSERT(ctx->Color.BlendEquatioRGB==GL_MIN);
+ ASSERT(ctx->Color.BlendEquationA==GL_MIN);
(void) ctx;
for (i=0;i<n;i++) {
@@ -252,7 +257,8 @@ blend_max( GLcontext *ctx, GLuint n, const GLubyte mask[],
GLchan rgba[][4], CONST GLchan dest[][4] )
{
GLuint i;
- ASSERT(ctx->Color.BlendEquation==GL_MAX_EXT);
+ ASSERT(ctx->Color.BlendEquatioRGB==GL_MAX);
+ ASSERT(ctx->Color.BlendEquationA==GL_MAX);
(void) ctx;
for (i=0;i<n;i++) {
@@ -628,27 +634,58 @@ blend_general( GLcontext *ctx, GLuint n, const GLubyte mask[],
/* compute blended color */
#if CHAN_TYPE == GL_FLOAT
- if (ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) {
+ if (ctx->Color.BlendEquationRGB==GL_FUNC_ADD) {
r = Rs * sR + Rd * dR;
g = Gs * sG + Gd * dG;
b = Bs * sB + Bd * dB;
a = As * sA + Ad * dA;
}
- else if (ctx->Color.BlendEquation==GL_FUNC_SUBTRACT_EXT) {
+ else if (ctx->Color.BlendEquationRGB==GL_FUNC_SUBTRACT) {
r = Rs * sR - Rd * dR;
g = Gs * sG - Gd * dG;
b = Bs * sB - Bd * dB;
a = As * sA - Ad * dA;
}
- else if (ctx->Color.BlendEquation==GL_FUNC_REVERSE_SUBTRACT_EXT) {
+ else if (ctx->Color.BlendEquationRGB==GL_FUNC_REVERSE_SUBTRACT) {
r = Rd * dR - Rs * sR;
g = Gd * dG - Gs * sG;
b = Bd * dB - Bs * sB;
a = Ad * dA - As * sA;
}
+ else if (ctx->Color.BlendEquationRGB==GL_MIN) {
+ r = MIN2( Rd, Rs );
+ g = MIN2( Gd, Gs );
+ b = MIN2( Bd, Bs );
+ }
+ else if (ctx->Color.BlendEquationRGB==GL_MAX) {
+ r = MAX2( Rd, Rs );
+ g = MAX2( Gd, Gs );
+ b = MAX2( Bd, Bs );
+ }
else {
/* should never get here */
- r = g = b = a = 0.0F; /* silence uninitialized var warning */
+ r = g = b = 0.0F; /* silence uninitialized var warning */
+ _mesa_problem(ctx, "unexpected BlendEquation in blend_general()");
+ }
+
+ if (ctx->Color.BlendEquationA==GL_FUNC_ADD) {
+ a = As * sA + Ad * dA;
+ }
+ else if (ctx->Color.BlendEquationA==GL_FUNC_SUBTRACT) {
+ a = As * sA - Ad * dA;
+ }
+ else if (ctx->Color.BlendEquationA==GL_FUNC_REVERSE_SUBTRACT) {
+ a = Ad * dA - As * sA;
+ }
+ else if (ctx->Color.BlendEquationA==GL_MIN) {
+ a = MIN2( Ad, As );
+ }
+ else if (ctx->Color.BlendEquationA==GL_MAX) {
+ a = MAX2( Ad, As );
+ }
+ else {
+ /* should never get here */
+ a = 0.0F; /* silence uninitialized var warning */
_mesa_problem(ctx, "unexpected BlendEquation in blend_general()");
}
@@ -658,27 +695,55 @@ blend_general( GLcontext *ctx, GLuint n, const GLubyte mask[],
rgba[i][BCOMP] = MAX2( b, 0.0F );
rgba[i][ACOMP] = CLAMP( a, 0.0F, CHAN_MAXF );
#else
- if (ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) {
+ if (ctx->Color.BlendEquationRGB==GL_FUNC_ADD) {
r = Rs * sR + Rd * dR + 0.5F;
g = Gs * sG + Gd * dG + 0.5F;
b = Bs * sB + Bd * dB + 0.5F;
- a = As * sA + Ad * dA + 0.5F;
}
- else if (ctx->Color.BlendEquation==GL_FUNC_SUBTRACT_EXT) {
+ else if (ctx->Color.BlendEquationRGB==GL_FUNC_SUBTRACT) {
r = Rs * sR - Rd * dR + 0.5F;
g = Gs * sG - Gd * dG + 0.5F;
b = Bs * sB - Bd * dB + 0.5F;
- a = As * sA - Ad * dA + 0.5F;
}
- else if (ctx->Color.BlendEquation==GL_FUNC_REVERSE_SUBTRACT_EXT) {
+ else if (ctx->Color.BlendEquationRGB==GL_FUNC_REVERSE_SUBTRACT) {
r = Rd * dR - Rs * sR + 0.5F;
g = Gd * dG - Gs * sG + 0.5F;
b = Bd * dB - Bs * sB + 0.5F;
+ }
+ else if (ctx->Color.BlendEquationRGB==GL_MIN) {
+ r = MIN2( Rd, Rs );
+ g = MIN2( Gd, Gs );
+ b = MIN2( Bd, Bs );
+ }
+ else if (ctx->Color.BlendEquationRGB==GL_MAX) {
+ r = MAX2( Rd, Rs );
+ g = MAX2( Gd, Gs );
+ b = MAX2( Bd, Bs );
+ }
+ else {
+ /* should never get here */
+ r = g = b = 0.0F; /* silence uninitialized var warning */
+ _mesa_problem(ctx, "unexpected BlendEquation in blend_general()");
+ }
+
+ if (ctx->Color.BlendEquationA==GL_FUNC_ADD) {
+ a = As * sA + Ad * dA + 0.5F;
+ }
+ else if (ctx->Color.BlendEquationA==GL_FUNC_SUBTRACT) {
+ a = As * sA - Ad * dA + 0.5F;
+ }
+ else if (ctx->Color.BlendEquationA==GL_FUNC_REVERSE_SUBTRACT) {
a = Ad * dA - As * sA + 0.5F;
}
+ else if (ctx->Color.BlendEquationA==GL_MIN) {
+ a = MIN2( Ad, As );
+ }
+ else if (ctx->Color.BlendEquationA==GL_MAX) {
+ a = MAX2( Ad, As );
+ }
else {
/* should never get here */
- r = g = b = a = 0.0F; /* silence uninitialized var warning */
+ a = 0.0F; /* silence uninitialized var warning */
_mesa_problem(ctx, "unexpected BlendEquation in blend_general()");
}
@@ -699,13 +764,16 @@ blend_general( GLcontext *ctx, GLuint n, const GLubyte mask[],
*/
void _swrast_choose_blend_func( GLcontext *ctx )
{
- const GLenum eq = ctx->Color.BlendEquation;
+ const GLenum eq = ctx->Color.BlendEquationRGB;
const GLenum srcRGB = ctx->Color.BlendSrcRGB;
const GLenum dstRGB = ctx->Color.BlendDstRGB;
const GLenum srcA = ctx->Color.BlendSrcA;
const GLenum dstA = ctx->Color.BlendDstA;
- if (eq==GL_MIN_EXT) {
+ if (ctx->Color.BlendEquationRGB != ctx->Color.BlendEquationA) {
+ SWRAST_CONTEXT(ctx)->BlendFunc = blend_general;
+ }
+ else if (eq==GL_MIN) {
/* Note: GL_MIN ignores the blending weight factors */
#if defined(USE_MMX_ASM)
if ( cpu_has_mmx ) {
@@ -715,7 +783,7 @@ void _swrast_choose_blend_func( GLcontext *ctx )
#endif
SWRAST_CONTEXT(ctx)->BlendFunc = blend_min;
}
- else if (eq==GL_MAX_EXT) {
+ else if (eq==GL_MAX) {
/* Note: GL_MAX ignores the blending weight factors */
#if defined(USE_MMX_ASM)
if ( cpu_has_mmx ) {
@@ -728,7 +796,7 @@ void _swrast_choose_blend_func( GLcontext *ctx )
else if (srcRGB != srcA || dstRGB != dstA) {
SWRAST_CONTEXT(ctx)->BlendFunc = blend_general;
}
- else if (eq==GL_FUNC_ADD_EXT && srcRGB==GL_SRC_ALPHA
+ else if (eq==GL_FUNC_ADD && srcRGB==GL_SRC_ALPHA
&& dstRGB==GL_ONE_MINUS_SRC_ALPHA) {
#if defined(USE_MMX_ASM)
if ( cpu_has_mmx ) {
@@ -738,7 +806,7 @@ void _swrast_choose_blend_func( GLcontext *ctx )
#endif
SWRAST_CONTEXT(ctx)->BlendFunc = blend_transparency;
}
- else if (eq==GL_FUNC_ADD_EXT && srcRGB==GL_ONE && dstRGB==GL_ONE) {
+ else if (eq==GL_FUNC_ADD && srcRGB==GL_ONE && dstRGB==GL_ONE) {
#if defined(USE_MMX_ASM)
if ( cpu_has_mmx ) {
SWRAST_CONTEXT(ctx)->BlendFunc = _mesa_mmx_blend_add;
@@ -747,10 +815,10 @@ void _swrast_choose_blend_func( GLcontext *ctx )
#endif
SWRAST_CONTEXT(ctx)->BlendFunc = blend_add;
}
- else if (((eq==GL_FUNC_ADD_EXT || eq==GL_FUNC_REVERSE_SUBTRACT_EXT)
+ else if (((eq==GL_FUNC_ADD || eq==GL_FUNC_REVERSE_SUBTRACT)
&& (srcRGB==GL_ZERO && dstRGB==GL_SRC_COLOR))
||
- ((eq==GL_FUNC_ADD_EXT || eq==GL_FUNC_SUBTRACT_EXT)
+ ((eq==GL_FUNC_ADD || eq==GL_FUNC_SUBTRACT)
&& (srcRGB==GL_DST_COLOR && dstRGB==GL_ZERO))) {
#if defined(USE_MMX_ASM)
if ( cpu_has_mmx ) {
@@ -760,10 +828,10 @@ void _swrast_choose_blend_func( GLcontext *ctx )
#endif
SWRAST_CONTEXT(ctx)->BlendFunc = blend_modulate;
}
- else if (eq==GL_FUNC_ADD_EXT && srcRGB == GL_ZERO && dstRGB == GL_ONE) {
+ else if (eq==GL_FUNC_ADD && srcRGB == GL_ZERO && dstRGB == GL_ONE) {
SWRAST_CONTEXT(ctx)->BlendFunc = blend_noop;
}
- else if (eq==GL_FUNC_ADD_EXT && srcRGB == GL_ONE && dstRGB == GL_ZERO) {
+ else if (eq==GL_FUNC_ADD && srcRGB == GL_ONE && dstRGB == GL_ZERO) {
SWRAST_CONTEXT(ctx)->BlendFunc = blend_replace;
}
else {
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 21:52:58 +0000