AlexIndustrial/mesa
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

i965/meta: Support 16x MSAA in the meta stencil blit

Browse Source 
The destination rectangle is now drawn at 4x4 the size and the shader
code to calculate the sample number is adjusted accordingly.

Acked-by: Ben Widawsky <ben@bwidawsk.net>
This commit is contained in:
Neil Roberts
2015-09-11 18:09:46 +01:00
parent a680465428
commit 1a22b12fc5
1 changed files with 17 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/mesa/drivers/dri/i965/brw_meta_stencil_blit.c
+17 -5
View File
@@ -163,6 +163,13 @@ static const char *fs_tmpl =
" txl_coords.x = ((X & int(0xfff8)) >> 2) | (X & int(0x1));\n"
" txl_coords.y = ((Y & int(0xfffc)) >> 1) | (Y & int(0x1));\n"
" sample_index = (X & 0x4) | (Y & 0x2) | ((X & 0x2) >> 1);\n"
" break;\n"
" case 16:\n"
" txl_coords.x = ((X & int(0xfff8)) >> 2) | (X & int(0x1));\n"
" txl_coords.y = ((Y & int(0xfff8)) >> 2) | (Y & int(0x1));\n"
" sample_index = (((Y & 0x4) << 1) | (X & 0x4) | (Y & 0x2) |\n"
" ((X & 0x2) >> 1));\n"
" break;\n"
" }\n"
"}\n"
"\n"
@@ -313,11 +320,16 @@ adjust_msaa(struct blit_dims *dims, int num_samples)
dims->dst_x0 *= 2;
dims->dst_x1 *= 2;
} else if (num_samples) {
const int x_num_samples = num_samples / 2;
dims->dst_x0 = ROUND_DOWN_TO(dims->dst_x0 * x_num_samples, num_samples);
dims->dst_y0 = ROUND_DOWN_TO(dims->dst_y0 * 2, 4);
dims->dst_x1 = ALIGN(dims->dst_x1 * x_num_samples, num_samples);
dims->dst_y1 = ALIGN(dims->dst_y1 * 2, 4);
const int y_num_samples = num_samples >= 16 ? 4 : 2;
const int x_num_samples = num_samples / y_num_samples;
dims->dst_x0 = ROUND_DOWN_TO(dims->dst_x0 * x_num_samples,
x_num_samples * 2);
dims->dst_y0 = ROUND_DOWN_TO(dims->dst_y0 * y_num_samples,
y_num_samples * 2);
dims->dst_x1 = ALIGN(dims->dst_x1 * x_num_samples,
x_num_samples * 2);
dims->dst_y1 = ALIGN(dims->dst_y1 * y_num_samples,
y_num_samples * 2);
}
}