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cell: more accurate comments

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This commit is contained in:
Brian Paul 2008-10-09 08:24:03 -06:00
parent ca5224945a
commit 2a3fa97be3
1 changed files with 6 additions and 5 deletions
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11
src/gallium/drivers/cell/ppu/cell_gen_fragment.c
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@ -1841,7 +1841,7 @@ cell_gen_fragment_function(struct cell_context *cell, struct spe_function *f)
ASSERT(TILE_SIZE == 32); ASSERT(TILE_SIZE == 32);
spe_comment(f, 0, "Computing tile location in memory"); spe_comment(f, 0, "Compute quad offset within tile");
spe_rotmi(f, y2_reg, y_reg, -1); /* y2 = y / 2 */ spe_rotmi(f, y2_reg, y_reg, -1); /* y2 = y / 2 */
spe_rotmi(f, x2_reg, x_reg, -1); /* x2 = x / 2 */ spe_rotmi(f, x2_reg, x_reg, -1); /* x2 = x / 2 */
spe_shli(f, y2_reg, y2_reg, 4); /* y2 *= 16 */ spe_shli(f, y2_reg, y2_reg, 4); /* y2 *= 16 */
@ -1869,7 +1869,7 @@ cell_gen_fragment_function(struct cell_context *cell, struct spe_function *f)
boolean fbS_reg_set = false, fbZ_reg_set = false; boolean fbS_reg_set = false, fbZ_reg_set = false;
unsigned int fbS_reg, fbZ_reg = 0; unsigned int fbS_reg, fbZ_reg = 0;
spe_comment(f, 0, "Loading Z/stencil tile"); spe_comment(f, 0, "Fetch quad's Z/stencil values from tile");
/* fetch quad of depth/stencil values from tile at (x,y) */ /* fetch quad of depth/stencil values from tile at (x,y) */
/* Load: fbZS_reg = memory[depth_tile_reg + offset_reg] */ /* Load: fbZS_reg = memory[depth_tile_reg + offset_reg] */
@ -1993,7 +1993,7 @@ cell_gen_fragment_function(struct cell_context *cell, struct spe_function *f)
* fbZ_reg has four Z vals in bits [23..0] or bits [15..0]. * fbZ_reg has four Z vals in bits [23..0] or bits [15..0].
* fbS_reg has four 8-bit Z values in bits [7..0]. * fbS_reg has four 8-bit Z values in bits [7..0].
*/ */
spe_comment(f, 0, "Storing depth/stencil values"); spe_comment(f, 0, "Store quad's depth/stencil values in tile");
if (zs_format == PIPE_FORMAT_S8Z24_UNORM || if (zs_format == PIPE_FORMAT_S8Z24_UNORM ||
zs_format == PIPE_FORMAT_X8Z24_UNORM) { zs_format == PIPE_FORMAT_X8Z24_UNORM) {
if (fbS_reg_set) { if (fbS_reg_set) {
@ -2038,6 +2038,7 @@ cell_gen_fragment_function(struct cell_context *cell, struct spe_function *f)
* Note: if mask={~0,~0,~0,~0} and we're not blending or colormasking * Note: if mask={~0,~0,~0,~0} and we're not blending or colormasking
* we could skip this load. * we could skip this load.
*/ */
spe_comment(f, 0, "Fetch quad colors from tile");
spe_lqx(f, fbRGBA_reg, color_tile_reg, quad_offset_reg); spe_lqx(f, fbRGBA_reg, color_tile_reg, quad_offset_reg);
if (blend->blend_enable) { if (blend->blend_enable) {
@ -2055,7 +2056,7 @@ cell_gen_fragment_function(struct cell_context *cell, struct spe_function *f)
int rgba_reg = spe_allocate_available_register(f); int rgba_reg = spe_allocate_available_register(f);
/* Pack four float colors as four 32-bit int colors */ /* Pack four float colors as four 32-bit int colors */
spe_comment(f, 0, "Convert fragment colors to framebuffer colors"); spe_comment(f, 0, "Convert float quad colors to packed int framebuffer colors");
gen_pack_colors(f, color_format, gen_pack_colors(f, color_format,
fragR_reg, fragG_reg, fragB_reg, fragA_reg, fragR_reg, fragG_reg, fragB_reg, fragA_reg,
rgba_reg); rgba_reg);
@ -2081,7 +2082,7 @@ cell_gen_fragment_function(struct cell_context *cell, struct spe_function *f)
/* Store updated quad in tile: /* Store updated quad in tile:
* memory[color_tile + quad_offset] = rgba_reg; * memory[color_tile + quad_offset] = rgba_reg;
*/ */
spe_comment(f, 0, "Store framebuffer colors"); spe_comment(f, 0, "Store quad colors into color tile");
spe_stqx(f, rgba_reg, color_tile_reg, quad_offset_reg); spe_stqx(f, rgba_reg, color_tile_reg, quad_offset_reg);
spe_release_register(f, rgba_reg); spe_release_register(f, rgba_reg);