diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_vs.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vs.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs.c b/src/mesa/drivers/dri/i965/brw_vs.c index d03567e..6e9848f 100644 --- a/src/mesa/drivers/dri/i965/brw_vs.c +++ b/src/mesa/drivers/dri/i965/brw_vs.c @@ -40,108 +40,6 @@ #include "util/ralloc.h" -static inline void assign_vue_slot(struct brw_vue_map *vue_map, - int varying) -{ - /* Make sure this varying hasn't been assigned a slot already */ - assert (vue_map->varying_to_slot[varying] == -1); - - vue_map->varying_to_slot[varying] = vue_map->num_slots; - vue_map->slot_to_varying[vue_map->num_slots++] = varying; -} - -/** - * Compute the VUE map for vertex shader program. - */ -void -brw_compute_vue_map(const struct brw_device_info *devinfo, - struct brw_vue_map *vue_map, - GLbitfield64 slots_valid) -{ - vue_map->slots_valid = slots_valid; - int i; - - /* gl_Layer and gl_ViewportIndex don't get their own varying slots -- they - * are stored in the first VUE slot (VARYING_SLOT_PSIZ). - */ - slots_valid &= ~(VARYING_BIT_LAYER | VARYING_BIT_VIEWPORT); - - /* Make sure that the values we store in vue_map->varying_to_slot and - * vue_map->slot_to_varying won't overflow the signed chars that are used - * to store them. Note that since vue_map->slot_to_varying sometimes holds - * values equal to BRW_VARYING_SLOT_COUNT, we need to ensure that - * BRW_VARYING_SLOT_COUNT is <= 127, not 128. - */ - STATIC_ASSERT(BRW_VARYING_SLOT_COUNT <= 127); - - vue_map->num_slots = 0; - for (i = 0; i < BRW_VARYING_SLOT_COUNT; ++i) { - vue_map->varying_to_slot[i] = -1; - vue_map->slot_to_varying[i] = BRW_VARYING_SLOT_COUNT; - } - - /* VUE header: format depends on chip generation and whether clipping is - * enabled. - */ - if (devinfo->gen < 6) { - /* There are 8 dwords in VUE header pre-Ironlake: - * dword 0-3 is indices, point width, clip flags. - * dword 4-7 is ndc position - * dword 8-11 is the first vertex data. - * - * On Ironlake the VUE header is nominally 20 dwords, but the hardware - * will accept the same header layout as Gen4 [and should be a bit faster] - */ - assign_vue_slot(vue_map, VARYING_SLOT_PSIZ); - assign_vue_slot(vue_map, BRW_VARYING_SLOT_NDC); - assign_vue_slot(vue_map, VARYING_SLOT_POS); - } else { - /* There are 8 or 16 DWs (D0-D15) in VUE header on Sandybridge: - * dword 0-3 of the header is indices, point width, clip flags. - * dword 4-7 is the 4D space position - * dword 8-15 of the vertex header is the user clip distance if - * enabled. - * dword 8-11 or 16-19 is the first vertex element data we fill. - */ - assign_vue_slot(vue_map, VARYING_SLOT_PSIZ); - assign_vue_slot(vue_map, VARYING_SLOT_POS); - if (slots_valid & BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)) - assign_vue_slot(vue_map, VARYING_SLOT_CLIP_DIST0); - if (slots_valid & BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)) - assign_vue_slot(vue_map, VARYING_SLOT_CLIP_DIST1); - - /* front and back colors need to be consecutive so that we can use - * ATTRIBUTE_SWIZZLE_INPUTATTR_FACING to swizzle them when doing - * two-sided color. - */ - if (slots_valid & BITFIELD64_BIT(VARYING_SLOT_COL0)) - assign_vue_slot(vue_map, VARYING_SLOT_COL0); - if (slots_valid & BITFIELD64_BIT(VARYING_SLOT_BFC0)) - assign_vue_slot(vue_map, VARYING_SLOT_BFC0); - if (slots_valid & BITFIELD64_BIT(VARYING_SLOT_COL1)) - assign_vue_slot(vue_map, VARYING_SLOT_COL1); - if (slots_valid & BITFIELD64_BIT(VARYING_SLOT_BFC1)) - assign_vue_slot(vue_map, VARYING_SLOT_BFC1); - } - - /* The hardware doesn't care about the rest of the vertex outputs, so just - * assign them contiguously. Don't reassign outputs that already have a - * slot. - * - * We generally don't need to assign a slot for VARYING_SLOT_CLIP_VERTEX, - * since it's encoded as the clip distances by emit_clip_distances(). - * However, it may be output by transform feedback, and we'd rather not - * recompute state when TF changes, so we just always include it. - */ - for (int i = 0; i < VARYING_SLOT_MAX; ++i) { - if ((slots_valid & BITFIELD64_BIT(i)) && - vue_map->varying_to_slot[i] == -1) { - assign_vue_slot(vue_map, i); - } - } -} - - /** * Decide which set of clip planes should be used when clipping via * gl_Position or gl_ClipVertex. |