From a48d767cf2ec82d0c0f893a22d22e8593901b206 Mon Sep 17 00:00:00 2001 From: Brian Date: Thu, 12 Jul 2007 14:13:48 -0600 Subject: Add a quad 'bufloop' stage to handle glDrawBuffer(GL_FRONT_AND_BACK). This removes the notion of multiple color buffers from all other stages. Will need a bit more work when shaders with multiple render targets arrive. --- src/mesa/pipe/softpipe/sp_quad_blend.c | 536 ++++++++++++++++----------------- 1 file changed, 265 insertions(+), 271 deletions(-) (limited to 'src/mesa/pipe/softpipe/sp_quad_blend.c') diff --git a/src/mesa/pipe/softpipe/sp_quad_blend.c b/src/mesa/pipe/softpipe/sp_quad_blend.c index 2599e7a2f9..3d097aea65 100644 --- a/src/mesa/pipe/softpipe/sp_quad_blend.c +++ b/src/mesa/pipe/softpipe/sp_quad_blend.c @@ -104,287 +104,281 @@ blend_quad(struct quad_stage *qs, struct quad_header *quad) static const GLfloat zero[4] = { 0, 0, 0, 0 }; static const GLfloat one[4] = { 1, 1, 1, 1 }; struct softpipe_context *softpipe = qs->softpipe; + struct softpipe_surface *sps = softpipe_surface(softpipe->cbuf); GLfloat source[4][QUAD_SIZE], dest[4][QUAD_SIZE]; - GLuint i; - - /* XXX we're also looping in output_quad() !?! */ - - for (i = 0; i < softpipe->framebuffer.num_cbufs; i++) { - struct softpipe_surface *sps - = softpipe_surface(softpipe->framebuffer.cbufs[i]); - sps->read_quad_f_swz(sps, quad->x0, quad->y0, dest); + /* get colors from framebuffer */ + sps->read_quad_f_swz(sps, quad->x0, quad->y0, dest); - /* - * Compute src/first term RGB - */ - switch (softpipe->blend.rgb_src_factor) { - case PIPE_BLENDFACTOR_ONE: - VEC4_COPY(source[0], quad->outputs.color[0]); /* R */ - VEC4_COPY(source[1], quad->outputs.color[1]); /* G */ - VEC4_COPY(source[2], quad->outputs.color[2]); /* B */ - break; - case PIPE_BLENDFACTOR_SRC_COLOR: - VEC4_MUL(source[0], quad->outputs.color[0], quad->outputs.color[0]); /* R */ - VEC4_MUL(source[1], quad->outputs.color[1], quad->outputs.color[1]); /* G */ - VEC4_MUL(source[2], quad->outputs.color[2], quad->outputs.color[2]); /* B */ - break; - case PIPE_BLENDFACTOR_SRC_ALPHA: - { - const GLfloat *alpha = quad->outputs.color[3]; - VEC4_MUL(source[0], quad->outputs.color[0], alpha); /* R */ - VEC4_MUL(source[1], quad->outputs.color[1], alpha); /* G */ - VEC4_MUL(source[2], quad->outputs.color[2], alpha); /* B */ - } - break; - case PIPE_BLENDFACTOR_DST_COLOR: - VEC4_MUL(source[0], quad->outputs.color[0], dest[0]); /* R */ - VEC4_MUL(source[1], quad->outputs.color[1], dest[1]); /* G */ - VEC4_MUL(source[2], quad->outputs.color[2], dest[2]); /* B */ - break; - case PIPE_BLENDFACTOR_DST_ALPHA: - { - const GLfloat *alpha = dest[3]; - VEC4_MUL(source[0], quad->outputs.color[0], alpha); /* R */ - VEC4_MUL(source[1], quad->outputs.color[1], alpha); /* G */ - VEC4_MUL(source[2], quad->outputs.color[2], alpha); /* B */ - } - break; - case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE: - assert(0); /* to do */ - break; - case PIPE_BLENDFACTOR_CONST_COLOR: - { - GLfloat comp[4]; - VEC4_SCALAR(comp, softpipe->blend_color.color[0]); /* R */ - VEC4_MUL(source[0], quad->outputs.color[0], comp); /* R */ - VEC4_SCALAR(comp, softpipe->blend_color.color[1]); /* G */ - VEC4_MUL(source[1], quad->outputs.color[1], comp); /* G */ - VEC4_SCALAR(comp, softpipe->blend_color.color[2]); /* B */ - VEC4_MUL(source[2], quad->outputs.color[2], comp); /* B */ - } - break; - case PIPE_BLENDFACTOR_CONST_ALPHA: - { - GLfloat alpha[4]; - VEC4_SCALAR(alpha, softpipe->blend_color.color[3]); - VEC4_MUL(source[0], quad->outputs.color[0], alpha); /* R */ - VEC4_MUL(source[1], quad->outputs.color[1], alpha); /* G */ - VEC4_MUL(source[2], quad->outputs.color[2], alpha); /* B */ - } - break; - case PIPE_BLENDFACTOR_SRC1_COLOR: - assert(0); /* to do */ - break; - case PIPE_BLENDFACTOR_SRC1_ALPHA: - assert(0); /* to do */ - break; - case PIPE_BLENDFACTOR_ZERO: - VEC4_COPY(source[0], zero); /* R */ - VEC4_COPY(source[1], zero); /* G */ - VEC4_COPY(source[2], zero); /* B */ - break; - case PIPE_BLENDFACTOR_INV_SRC_COLOR: - { - GLfloat inv_comp[4]; - VEC4_SUB(inv_comp, one, quad->outputs.color[0]); /* R */ - VEC4_MUL(source[0], quad->outputs.color[0], inv_comp); /* R */ - VEC4_SUB(inv_comp, one, quad->outputs.color[1]); /* G */ - VEC4_MUL(source[1], quad->outputs.color[1], inv_comp); /* G */ - VEC4_SUB(inv_comp, one, quad->outputs.color[2]); /* B */ - VEC4_MUL(source[2], quad->outputs.color[2], inv_comp); /* B */ - } - break; - case PIPE_BLENDFACTOR_INV_SRC_ALPHA: - { - GLfloat inv_alpha[4]; - VEC4_SUB(inv_alpha, one, quad->outputs.color[3]); - VEC4_MUL(source[0], quad->outputs.color[0], inv_alpha); /* R */ - VEC4_MUL(source[1], quad->outputs.color[1], inv_alpha); /* G */ - VEC4_MUL(source[2], quad->outputs.color[2], inv_alpha); /* B */ - } - break; - case PIPE_BLENDFACTOR_INV_DST_ALPHA: - { - GLfloat inv_alpha[4]; - VEC4_SUB(inv_alpha, one, dest[3]); - VEC4_MUL(source[0], quad->outputs.color[0], inv_alpha); /* R */ - VEC4_MUL(source[1], quad->outputs.color[1], inv_alpha); /* G */ - VEC4_MUL(source[2], quad->outputs.color[2], inv_alpha); /* B */ - } - break; - case PIPE_BLENDFACTOR_INV_DST_COLOR: - { - GLfloat inv_comp[4]; - VEC4_SUB(inv_comp, one, dest[0]); /* R */ - VEC4_MUL(source[0], quad->outputs.color[0], inv_comp); /* R */ - VEC4_SUB(inv_comp, one, dest[1]); /* G */ - VEC4_MUL(source[1], quad->outputs.color[1], inv_comp); /* G */ - VEC4_SUB(inv_comp, one, dest[2]); /* B */ - VEC4_MUL(source[2], quad->outputs.color[2], inv_comp); /* B */ - } - break; - case PIPE_BLENDFACTOR_INV_CONST_COLOR: - { - GLfloat inv_comp[4]; - /* R */ - VEC4_SCALAR(inv_comp, 1.0 - softpipe->blend_color.color[0]); - VEC4_MUL(source[0], quad->outputs.color[0], inv_comp); - /* G */ - VEC4_SCALAR(inv_comp, 1.0 - softpipe->blend_color.color[1]); - VEC4_MUL(source[1], quad->outputs.color[1], inv_comp); - /* B */ - VEC4_SCALAR(inv_comp, 1.0 - softpipe->blend_color.color[2]); - VEC4_MUL(source[2], quad->outputs.color[2], inv_comp); - } - break; - case PIPE_BLENDFACTOR_INV_CONST_ALPHA: - { - GLfloat alpha[4], inv_alpha[4]; - VEC4_SCALAR(alpha, 1.0 - softpipe->blend_color.color[3]); - VEC4_MUL(source[0], quad->outputs.color[0], inv_alpha); /* R */ - VEC4_MUL(source[1], quad->outputs.color[1], inv_alpha); /* G */ - VEC4_MUL(source[2], quad->outputs.color[2], inv_alpha); /* B */ - } - break; - case PIPE_BLENDFACTOR_INV_SRC1_COLOR: - assert(0); /* to do */ - break; - case PIPE_BLENDFACTOR_INV_SRC1_ALPHA: - assert(0); /* to do */ - break; - default: - abort(); + /* + * Compute src/first term RGB + */ + switch (softpipe->blend.rgb_src_factor) { + case PIPE_BLENDFACTOR_ONE: + VEC4_COPY(source[0], quad->outputs.color[0]); /* R */ + VEC4_COPY(source[1], quad->outputs.color[1]); /* G */ + VEC4_COPY(source[2], quad->outputs.color[2]); /* B */ + break; + case PIPE_BLENDFACTOR_SRC_COLOR: + VEC4_MUL(source[0], quad->outputs.color[0], quad->outputs.color[0]); /* R */ + VEC4_MUL(source[1], quad->outputs.color[1], quad->outputs.color[1]); /* G */ + VEC4_MUL(source[2], quad->outputs.color[2], quad->outputs.color[2]); /* B */ + break; + case PIPE_BLENDFACTOR_SRC_ALPHA: + { + const GLfloat *alpha = quad->outputs.color[3]; + VEC4_MUL(source[0], quad->outputs.color[0], alpha); /* R */ + VEC4_MUL(source[1], quad->outputs.color[1], alpha); /* G */ + VEC4_MUL(source[2], quad->outputs.color[2], alpha); /* B */ } - - /* - * Compute src/first term A - */ - switch (softpipe->blend.alpha_src_factor) { - case PIPE_BLENDFACTOR_ONE: - VEC4_COPY(source[3], quad->outputs.color[3]); /* A */ - break; - case PIPE_BLENDFACTOR_SRC_ALPHA: - { - const GLfloat *alpha = quad->outputs.color[3]; - VEC4_MUL(source[3], quad->outputs.color[3], alpha); /* A */ - } - break; - case PIPE_BLENDFACTOR_ZERO: - VEC4_COPY(source[3], zero); /* A */ - break; - /* XXX fill in remaining terms */ - default: - abort(); + break; + case PIPE_BLENDFACTOR_DST_COLOR: + VEC4_MUL(source[0], quad->outputs.color[0], dest[0]); /* R */ + VEC4_MUL(source[1], quad->outputs.color[1], dest[1]); /* G */ + VEC4_MUL(source[2], quad->outputs.color[2], dest[2]); /* B */ + break; + case PIPE_BLENDFACTOR_DST_ALPHA: + { + const GLfloat *alpha = dest[3]; + VEC4_MUL(source[0], quad->outputs.color[0], alpha); /* R */ + VEC4_MUL(source[1], quad->outputs.color[1], alpha); /* G */ + VEC4_MUL(source[2], quad->outputs.color[2], alpha); /* B */ } - - - /* - * Compute dest/second term RGB - */ - switch (softpipe->blend.rgb_dst_factor) { - case PIPE_BLENDFACTOR_ONE: - /* dest = dest * 1 NO-OP, leave dest as-is */ - break; - case PIPE_BLENDFACTOR_INV_SRC_ALPHA: - { - GLfloat one_minus_alpha[QUAD_SIZE]; - VEC4_SUB(one_minus_alpha, one, quad->outputs.color[3]); - VEC4_MUL(dest[0], dest[0], one_minus_alpha); /* R */ - VEC4_MUL(dest[1], dest[1], one_minus_alpha); /* G */ - VEC4_MUL(dest[2], dest[2], one_minus_alpha); /* B */ - } - break; - case PIPE_BLENDFACTOR_ZERO: - VEC4_COPY(dest[0], zero); /* R */ - VEC4_COPY(dest[1], zero); /* G */ - VEC4_COPY(dest[2], zero); /* B */ - break; - /* XXX fill in remaining terms */ - default: - abort(); + break; + case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE: + assert(0); /* to do */ + break; + case PIPE_BLENDFACTOR_CONST_COLOR: + { + GLfloat comp[4]; + VEC4_SCALAR(comp, softpipe->blend_color.color[0]); /* R */ + VEC4_MUL(source[0], quad->outputs.color[0], comp); /* R */ + VEC4_SCALAR(comp, softpipe->blend_color.color[1]); /* G */ + VEC4_MUL(source[1], quad->outputs.color[1], comp); /* G */ + VEC4_SCALAR(comp, softpipe->blend_color.color[2]); /* B */ + VEC4_MUL(source[2], quad->outputs.color[2], comp); /* B */ } - - /* - * Compute dest/second term A - */ - switch (softpipe->blend.alpha_dst_factor) { - case PIPE_BLENDFACTOR_ONE: - /* dest = dest * 1 NO-OP, leave dest as-is */ - break; - case PIPE_BLENDFACTOR_INV_SRC_ALPHA: - { - GLfloat one_minus_alpha[QUAD_SIZE]; - VEC4_SUB(one_minus_alpha, one, quad->outputs.color[3]); - VEC4_MUL(dest[3], dest[3], one_minus_alpha); /* A */ - } - break; - case PIPE_BLENDFACTOR_ZERO: - VEC4_COPY(dest[3], zero); /* A */ - break; - /* XXX fill in remaining terms */ - default: - abort(); + break; + case PIPE_BLENDFACTOR_CONST_ALPHA: + { + GLfloat alpha[4]; + VEC4_SCALAR(alpha, softpipe->blend_color.color[3]); + VEC4_MUL(source[0], quad->outputs.color[0], alpha); /* R */ + VEC4_MUL(source[1], quad->outputs.color[1], alpha); /* G */ + VEC4_MUL(source[2], quad->outputs.color[2], alpha); /* B */ } - - /* - * Combine RGB terms - */ - switch (softpipe->blend.rgb_func) { - case PIPE_BLEND_ADD: - VEC4_ADD(quad->outputs.color[0], source[0], dest[0]); /* R */ - VEC4_ADD(quad->outputs.color[1], source[1], dest[1]); /* G */ - VEC4_ADD(quad->outputs.color[2], source[2], dest[2]); /* B */ - break; - case PIPE_BLEND_SUBTRACT: - VEC4_SUB(quad->outputs.color[0], source[0], dest[0]); /* R */ - VEC4_SUB(quad->outputs.color[1], source[1], dest[1]); /* G */ - VEC4_SUB(quad->outputs.color[2], source[2], dest[2]); /* B */ - break; - case PIPE_BLEND_REVERSE_SUBTRACT: - VEC4_SUB(quad->outputs.color[0], dest[0], source[0]); /* R */ - VEC4_SUB(quad->outputs.color[1], dest[1], source[1]); /* G */ - VEC4_SUB(quad->outputs.color[2], dest[2], source[2]); /* B */ - break; - case PIPE_BLEND_MIN: - VEC4_MIN(quad->outputs.color[0], source[0], dest[0]); /* R */ - VEC4_MIN(quad->outputs.color[1], source[1], dest[1]); /* G */ - VEC4_MIN(quad->outputs.color[2], source[2], dest[2]); /* B */ - break; - case PIPE_BLEND_MAX: - VEC4_MAX(quad->outputs.color[0], source[0], dest[0]); /* R */ - VEC4_MAX(quad->outputs.color[1], source[1], dest[1]); /* G */ - VEC4_MAX(quad->outputs.color[2], source[2], dest[2]); /* B */ - break; - default: - abort(); + break; + case PIPE_BLENDFACTOR_SRC1_COLOR: + assert(0); /* to do */ + break; + case PIPE_BLENDFACTOR_SRC1_ALPHA: + assert(0); /* to do */ + break; + case PIPE_BLENDFACTOR_ZERO: + VEC4_COPY(source[0], zero); /* R */ + VEC4_COPY(source[1], zero); /* G */ + VEC4_COPY(source[2], zero); /* B */ + break; + case PIPE_BLENDFACTOR_INV_SRC_COLOR: + { + GLfloat inv_comp[4]; + VEC4_SUB(inv_comp, one, quad->outputs.color[0]); /* R */ + VEC4_MUL(source[0], quad->outputs.color[0], inv_comp); /* R */ + VEC4_SUB(inv_comp, one, quad->outputs.color[1]); /* G */ + VEC4_MUL(source[1], quad->outputs.color[1], inv_comp); /* G */ + VEC4_SUB(inv_comp, one, quad->outputs.color[2]); /* B */ + VEC4_MUL(source[2], quad->outputs.color[2], inv_comp); /* B */ } - - /* - * Combine A terms - */ - switch (softpipe->blend.alpha_func) { - case PIPE_BLEND_ADD: - VEC4_ADD(quad->outputs.color[3], source[3], dest[3]); /* A */ - break; - case PIPE_BLEND_SUBTRACT: - VEC4_SUB(quad->outputs.color[3], source[3], dest[3]); /* A */ - break; - case PIPE_BLEND_REVERSE_SUBTRACT: - VEC4_SUB(quad->outputs.color[3], dest[3], source[3]); /* A */ - break; - case PIPE_BLEND_MIN: - VEC4_MIN(quad->outputs.color[3], source[3], dest[3]); /* A */ - break; - case PIPE_BLEND_MAX: - VEC4_MAX(quad->outputs.color[3], source[3], dest[3]); /* A */ - default: - abort(); + break; + case PIPE_BLENDFACTOR_INV_SRC_ALPHA: + { + GLfloat inv_alpha[4]; + VEC4_SUB(inv_alpha, one, quad->outputs.color[3]); + VEC4_MUL(source[0], quad->outputs.color[0], inv_alpha); /* R */ + VEC4_MUL(source[1], quad->outputs.color[1], inv_alpha); /* G */ + VEC4_MUL(source[2], quad->outputs.color[2], inv_alpha); /* B */ } - - /* pass blended quad to next stage */ - qs->next->run(qs->next, quad); + break; + case PIPE_BLENDFACTOR_INV_DST_ALPHA: + { + GLfloat inv_alpha[4]; + VEC4_SUB(inv_alpha, one, dest[3]); + VEC4_MUL(source[0], quad->outputs.color[0], inv_alpha); /* R */ + VEC4_MUL(source[1], quad->outputs.color[1], inv_alpha); /* G */ + VEC4_MUL(source[2], quad->outputs.color[2], inv_alpha); /* B */ + } + break; + case PIPE_BLENDFACTOR_INV_DST_COLOR: + { + GLfloat inv_comp[4]; + VEC4_SUB(inv_comp, one, dest[0]); /* R */ + VEC4_MUL(source[0], quad->outputs.color[0], inv_comp); /* R */ + VEC4_SUB(inv_comp, one, dest[1]); /* G */ + VEC4_MUL(source[1], quad->outputs.color[1], inv_comp); /* G */ + VEC4_SUB(inv_comp, one, dest[2]); /* B */ + VEC4_MUL(source[2], quad->outputs.color[2], inv_comp); /* B */ + } + break; + case PIPE_BLENDFACTOR_INV_CONST_COLOR: + { + GLfloat inv_comp[4]; + /* R */ + VEC4_SCALAR(inv_comp, 1.0 - softpipe->blend_color.color[0]); + VEC4_MUL(source[0], quad->outputs.color[0], inv_comp); + /* G */ + VEC4_SCALAR(inv_comp, 1.0 - softpipe->blend_color.color[1]); + VEC4_MUL(source[1], quad->outputs.color[1], inv_comp); + /* B */ + VEC4_SCALAR(inv_comp, 1.0 - softpipe->blend_color.color[2]); + VEC4_MUL(source[2], quad->outputs.color[2], inv_comp); + } + break; + case PIPE_BLENDFACTOR_INV_CONST_ALPHA: + { + GLfloat alpha[4], inv_alpha[4]; + VEC4_SCALAR(alpha, 1.0 - softpipe->blend_color.color[3]); + VEC4_MUL(source[0], quad->outputs.color[0], inv_alpha); /* R */ + VEC4_MUL(source[1], quad->outputs.color[1], inv_alpha); /* G */ + VEC4_MUL(source[2], quad->outputs.color[2], inv_alpha); /* B */ + } + break; + case PIPE_BLENDFACTOR_INV_SRC1_COLOR: + assert(0); /* to do */ + break; + case PIPE_BLENDFACTOR_INV_SRC1_ALPHA: + assert(0); /* to do */ + break; + default: + abort(); + } + + /* + * Compute src/first term A + */ + switch (softpipe->blend.alpha_src_factor) { + case PIPE_BLENDFACTOR_ONE: + VEC4_COPY(source[3], quad->outputs.color[3]); /* A */ + break; + case PIPE_BLENDFACTOR_SRC_ALPHA: + { + const GLfloat *alpha = quad->outputs.color[3]; + VEC4_MUL(source[3], quad->outputs.color[3], alpha); /* A */ + } + break; + case PIPE_BLENDFACTOR_ZERO: + VEC4_COPY(source[3], zero); /* A */ + break; + /* XXX fill in remaining terms */ + default: + abort(); + } + + + /* + * Compute dest/second term RGB + */ + switch (softpipe->blend.rgb_dst_factor) { + case PIPE_BLENDFACTOR_ONE: + /* dest = dest * 1 NO-OP, leave dest as-is */ + break; + case PIPE_BLENDFACTOR_INV_SRC_ALPHA: + { + GLfloat one_minus_alpha[QUAD_SIZE]; + VEC4_SUB(one_minus_alpha, one, quad->outputs.color[3]); + VEC4_MUL(dest[0], dest[0], one_minus_alpha); /* R */ + VEC4_MUL(dest[1], dest[1], one_minus_alpha); /* G */ + VEC4_MUL(dest[2], dest[2], one_minus_alpha); /* B */ + } + break; + case PIPE_BLENDFACTOR_ZERO: + VEC4_COPY(dest[0], zero); /* R */ + VEC4_COPY(dest[1], zero); /* G */ + VEC4_COPY(dest[2], zero); /* B */ + break; + /* XXX fill in remaining terms */ + default: + abort(); + } + + /* + * Compute dest/second term A + */ + switch (softpipe->blend.alpha_dst_factor) { + case PIPE_BLENDFACTOR_ONE: + /* dest = dest * 1 NO-OP, leave dest as-is */ + break; + case PIPE_BLENDFACTOR_INV_SRC_ALPHA: + { + GLfloat one_minus_alpha[QUAD_SIZE]; + VEC4_SUB(one_minus_alpha, one, quad->outputs.color[3]); + VEC4_MUL(dest[3], dest[3], one_minus_alpha); /* A */ + } + break; + case PIPE_BLENDFACTOR_ZERO: + VEC4_COPY(dest[3], zero); /* A */ + break; + /* XXX fill in remaining terms */ + default: + abort(); + } + + /* + * Combine RGB terms + */ + switch (softpipe->blend.rgb_func) { + case PIPE_BLEND_ADD: + VEC4_ADD(quad->outputs.color[0], source[0], dest[0]); /* R */ + VEC4_ADD(quad->outputs.color[1], source[1], dest[1]); /* G */ + VEC4_ADD(quad->outputs.color[2], source[2], dest[2]); /* B */ + break; + case PIPE_BLEND_SUBTRACT: + VEC4_SUB(quad->outputs.color[0], source[0], dest[0]); /* R */ + VEC4_SUB(quad->outputs.color[1], source[1], dest[1]); /* G */ + VEC4_SUB(quad->outputs.color[2], source[2], dest[2]); /* B */ + break; + case PIPE_BLEND_REVERSE_SUBTRACT: + VEC4_SUB(quad->outputs.color[0], dest[0], source[0]); /* R */ + VEC4_SUB(quad->outputs.color[1], dest[1], source[1]); /* G */ + VEC4_SUB(quad->outputs.color[2], dest[2], source[2]); /* B */ + break; + case PIPE_BLEND_MIN: + VEC4_MIN(quad->outputs.color[0], source[0], dest[0]); /* R */ + VEC4_MIN(quad->outputs.color[1], source[1], dest[1]); /* G */ + VEC4_MIN(quad->outputs.color[2], source[2], dest[2]); /* B */ + break; + case PIPE_BLEND_MAX: + VEC4_MAX(quad->outputs.color[0], source[0], dest[0]); /* R */ + VEC4_MAX(quad->outputs.color[1], source[1], dest[1]); /* G */ + VEC4_MAX(quad->outputs.color[2], source[2], dest[2]); /* B */ + break; + default: + abort(); } + + /* + * Combine A terms + */ + switch (softpipe->blend.alpha_func) { + case PIPE_BLEND_ADD: + VEC4_ADD(quad->outputs.color[3], source[3], dest[3]); /* A */ + break; + case PIPE_BLEND_SUBTRACT: + VEC4_SUB(quad->outputs.color[3], source[3], dest[3]); /* A */ + break; + case PIPE_BLEND_REVERSE_SUBTRACT: + VEC4_SUB(quad->outputs.color[3], dest[3], source[3]); /* A */ + break; + case PIPE_BLEND_MIN: + VEC4_MIN(quad->outputs.color[3], source[3], dest[3]); /* A */ + break; + case PIPE_BLEND_MAX: + VEC4_MAX(quad->outputs.color[3], source[3], dest[3]); /* A */ + default: + abort(); + } + + /* pass blended quad to next stage */ + qs->next->run(qs->next, quad); } -- cgit v1.2.3