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softpipe: When doing write_all_cbufs, don't stomp over the color.

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We have to make it through this loop processing the color multiple
times, so we can't go overwriting it on our first color buffer.

Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Eric Anholt 2011-07-13 16:08:42 -07:00
parent e4fdc95277
commit f79e3518b4
1 changed files with 12 additions and 4 deletions
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16
src/gallium/drivers/softpipe/sp_quad_blend.c
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@ -817,17 +817,25 @@ blend_fallback(struct quad_stage *qs,
quads[0]->input.y0);
boolean has_dst_alpha
= util_format_has_alpha(softpipe->framebuffer.cbufs[cbuf]->format);
uint q, i, j, qbuf;
qbuf = write_all ? 0 : cbuf;
uint q, i, j;
for (q = 0; q < nr; q++) {
struct quad_header *quad = quads[q];
float (*quadColor)[4];
float temp_quad_color[QUAD_SIZE][4];
const int itx = (quad->input.x0 & (TILE_SIZE-1));
const int ity = (quad->input.y0 & (TILE_SIZE-1));
quadColor = quad->output.color[qbuf];
if (write_all) {
for (j = 0; j < QUAD_SIZE; j++) {
for (i = 0; i < 4; i++) {
temp_quad_color[i][j] = quad->output.color[0][i][j];
}
}
quadColor = temp_quad_color;
} else {
quadColor = quad->output.color[cbuf];
}
/* get/swizzle dest colors
*/