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only blend active pixels in the quad
This commit is contained in:
Brian
parent
7658a0208a
commit
acef7c7501
1 changed files with 95 additions and 90 deletions
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@ -64,101 +64,106 @@ blend_quad(struct quad_stage *qs, struct quad_header *quad)
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* for all four pixels in the quad at once.
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*/
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for (j = 0; j < QUAD_SIZE; j++) {
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switch (softpipe->blend.rgb_src_factor) {
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case PIPE_BLENDFACTOR_ONE:
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srcTerm[0] = srcTerm[1] = srcTerm[2] = 1.0;
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break;
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case PIPE_BLENDFACTOR_SRC_ALPHA:
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srcTerm[0] = srcTerm[1] = srcTerm[2] = quad->outputs.color[3][j];
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break;
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case PIPE_BLENDFACTOR_ZERO:
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srcTerm[0] = srcTerm[1] = srcTerm[2] = 0.0;
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break;
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/* XXX fill in remaining terms */
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default:
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abort();
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}
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switch (softpipe->blend.alpha_src_factor) {
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case PIPE_BLENDFACTOR_ONE:
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srcTerm[3] = 1.0;
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break;
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case PIPE_BLENDFACTOR_SRC_ALPHA:
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srcTerm[3] = quad->outputs.color[3][j];
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break;
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case PIPE_BLENDFACTOR_ZERO:
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srcTerm[3] = 0.0;
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break;
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/* XXX fill in remaining terms */
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default:
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abort();
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}
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/* if this pixel in the quad is alive */
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if (quad->mask & (1 << j)) {
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switch (softpipe->blend.rgb_dst_factor) {
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case PIPE_BLENDFACTOR_ONE:
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dstTerm[0] = dstTerm[1] = dstTerm[2] = 1.0;
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break;
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case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
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dstTerm[0] = dstTerm[1] = dstTerm[2] = 1.0 - quad->outputs.color[3][j];
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break;
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case PIPE_BLENDFACTOR_ZERO:
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dstTerm[0] = dstTerm[1] = dstTerm[2] = 0.0;
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break;
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/* XXX fill in remaining terms */
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default:
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abort();
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}
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switch (softpipe->blend.rgb_src_factor) {
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case PIPE_BLENDFACTOR_ONE:
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srcTerm[0] = srcTerm[1] = srcTerm[2] = 1.0;
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break;
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case PIPE_BLENDFACTOR_SRC_ALPHA:
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srcTerm[0] = srcTerm[1] = srcTerm[2] = quad->outputs.color[3][j];
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break;
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case PIPE_BLENDFACTOR_ZERO:
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srcTerm[0] = srcTerm[1] = srcTerm[2] = 0.0;
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break;
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/* XXX fill in remaining terms */
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default:
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abort();
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}
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switch (softpipe->blend.alpha_dst_factor) {
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case PIPE_BLENDFACTOR_ONE:
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dstTerm[3] = 1.0;
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break;
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case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
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dstTerm[3] = 1.0 - quad->outputs.color[3][j];
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break;
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case PIPE_BLENDFACTOR_ZERO:
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dstTerm[3] = 0.0;
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break;
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/* XXX fill in remaining terms */
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default:
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abort();
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}
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switch (softpipe->blend.alpha_src_factor) {
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case PIPE_BLENDFACTOR_ONE:
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srcTerm[3] = 1.0;
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break;
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case PIPE_BLENDFACTOR_SRC_ALPHA:
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srcTerm[3] = quad->outputs.color[3][j];
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break;
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case PIPE_BLENDFACTOR_ZERO:
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srcTerm[3] = 0.0;
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break;
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/* XXX fill in remaining terms */
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default:
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abort();
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}
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switch (softpipe->blend.rgb_func) {
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case PIPE_BLEND_ADD:
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quad->outputs.color[0][j] = source[0][j] * srcTerm[0] + dest[0][j] * dstTerm[0];
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quad->outputs.color[1][j] = source[1][j] * srcTerm[1] + dest[1][j] * dstTerm[1];
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quad->outputs.color[2][j] = source[2][j] * srcTerm[2] + dest[2][j] * dstTerm[2];
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quad->outputs.color[3][j] = source[3][j] * srcTerm[3] + dest[3][j] * dstTerm[3];
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break;
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case PIPE_BLEND_SUBTRACT:
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quad->outputs.color[0][j] = source[0][j] * srcTerm[0] - dest[0][j] * dstTerm[0];
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quad->outputs.color[1][j] = source[1][j] * srcTerm[1] - dest[1][j] * dstTerm[1];
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quad->outputs.color[2][j] = source[2][j] * srcTerm[2] - dest[2][j] * dstTerm[2];
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quad->outputs.color[3][j] = source[3][j] * srcTerm[3] - dest[3][j] * dstTerm[3];
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break;
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case PIPE_BLEND_REVERSE_SUBTRACT:
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quad->outputs.color[0][j] = dest[0][j] * dstTerm[0] - source[0][j] * srcTerm[0];
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quad->outputs.color[1][j] = dest[1][j] * dstTerm[1] - source[1][j] * srcTerm[1];
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quad->outputs.color[2][j] = dest[2][j] * dstTerm[2] - source[2][j] * srcTerm[2];
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quad->outputs.color[3][j] = dest[3][j] * dstTerm[3] - source[3][j] * srcTerm[3];
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break;
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case PIPE_BLEND_MIN:
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quad->outputs.color[0][j] = MIN2(dest[0][j], source[0][j]);
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quad->outputs.color[1][j] = MIN2(dest[1][j], source[1][j]);
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quad->outputs.color[2][j] = MIN2(dest[2][j], source[2][j]);
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quad->outputs.color[3][j] = MIN2(dest[3][j], source[3][j]);
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break;
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case PIPE_BLEND_MAX:
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quad->outputs.color[0][j] = MAX2(dest[0][j], source[0][j]);
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quad->outputs.color[1][j] = MAX2(dest[1][j], source[1][j]);
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quad->outputs.color[2][j] = MAX2(dest[2][j], source[2][j]);
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quad->outputs.color[3][j] = MAX2(dest[3][j], source[3][j]);
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break;
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default:
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abort();
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switch (softpipe->blend.rgb_dst_factor) {
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case PIPE_BLENDFACTOR_ONE:
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dstTerm[0] = dstTerm[1] = dstTerm[2] = 1.0;
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break;
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case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
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dstTerm[0] = dstTerm[1] = dstTerm[2] = 1.0 - quad->outputs.color[3][j];
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break;
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case PIPE_BLENDFACTOR_ZERO:
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dstTerm[0] = dstTerm[1] = dstTerm[2] = 0.0;
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break;
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/* XXX fill in remaining terms */
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default:
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abort();
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}
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switch (softpipe->blend.alpha_dst_factor) {
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case PIPE_BLENDFACTOR_ONE:
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dstTerm[3] = 1.0;
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break;
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case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
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dstTerm[3] = 1.0 - quad->outputs.color[3][j];
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break;
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case PIPE_BLENDFACTOR_ZERO:
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dstTerm[3] = 0.0;
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break;
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/* XXX fill in remaining terms */
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default:
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abort();
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}
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switch (softpipe->blend.rgb_func) {
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case PIPE_BLEND_ADD:
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quad->outputs.color[0][j] = source[0][j] * srcTerm[0] + dest[0][j] * dstTerm[0];
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quad->outputs.color[1][j] = source[1][j] * srcTerm[1] + dest[1][j] * dstTerm[1];
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quad->outputs.color[2][j] = source[2][j] * srcTerm[2] + dest[2][j] * dstTerm[2];
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quad->outputs.color[3][j] = source[3][j] * srcTerm[3] + dest[3][j] * dstTerm[3];
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break;
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case PIPE_BLEND_SUBTRACT:
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quad->outputs.color[0][j] = source[0][j] * srcTerm[0] - dest[0][j] * dstTerm[0];
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quad->outputs.color[1][j] = source[1][j] * srcTerm[1] - dest[1][j] * dstTerm[1];
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quad->outputs.color[2][j] = source[2][j] * srcTerm[2] - dest[2][j] * dstTerm[2];
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quad->outputs.color[3][j] = source[3][j] * srcTerm[3] - dest[3][j] * dstTerm[3];
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break;
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case PIPE_BLEND_REVERSE_SUBTRACT:
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quad->outputs.color[0][j] = dest[0][j] * dstTerm[0] - source[0][j] * srcTerm[0];
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quad->outputs.color[1][j] = dest[1][j] * dstTerm[1] - source[1][j] * srcTerm[1];
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quad->outputs.color[2][j] = dest[2][j] * dstTerm[2] - source[2][j] * srcTerm[2];
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quad->outputs.color[3][j] = dest[3][j] * dstTerm[3] - source[3][j] * srcTerm[3];
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break;
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case PIPE_BLEND_MIN:
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quad->outputs.color[0][j] = MIN2(dest[0][j], source[0][j]);
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quad->outputs.color[1][j] = MIN2(dest[1][j], source[1][j]);
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quad->outputs.color[2][j] = MIN2(dest[2][j], source[2][j]);
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quad->outputs.color[3][j] = MIN2(dest[3][j], source[3][j]);
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break;
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case PIPE_BLEND_MAX:
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quad->outputs.color[0][j] = MAX2(dest[0][j], source[0][j]);
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quad->outputs.color[1][j] = MAX2(dest[1][j], source[1][j]);
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quad->outputs.color[2][j] = MAX2(dest[2][j], source[2][j]);
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quad->outputs.color[3][j] = MAX2(dest[3][j], source[3][j]);
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break;
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default:
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abort();
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}
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}
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} /* loop over quads */
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} /* loop over quad's pixels*/
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/* pass blended quad to next stage */
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qs->next->run(qs->next, quad);
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