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i965: Drop render_target_start from binding table struct.

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We have to start render targets at binding table index 0 in order to use
headerless FB write messages, and in fact already assume this in a bunch
of places in the code.  Let's finish that off, and not bother storing 0
in a struct to pretend to add it in a few places.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This commit is contained in:
Kenneth Graunke
2018-01-02 23:59:06 -08:00
parent a9bb067e27
commit 60f15477da
4 changed files with 10 additions and 13 deletions
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1
src/intel/compiler/brw_compiler.h
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@@ -681,7 +681,6 @@ struct brw_wm_prog_data {
/** @{
* surface indices the WM-specific surfaces
*/
uint32_t render_target_start;
uint32_t render_target_read_start;
/** @} */
} binding_table;

6
src/intel/compiler/brw_fs_generator.cpp
View File

@@ -287,8 +287,6 @@ fs_generator::fire_fb_write(fs_inst *inst,
* messages set "Render Target Index" to 0. Using a different binding
* table index would make it impossible to use headerless messages.
*/
assert(prog_data->binding_table.render_target_start == 0);
const uint32_t surf_index = inst->target;
bool last_render_target = inst->eot ||
@@ -427,8 +425,8 @@ fs_generator::generate_fb_read(fs_inst *inst, struct brw_reg dst,
{
assert(inst->size_written % REG_SIZE == 0);
struct brw_wm_prog_data *prog_data = brw_wm_prog_data(this->prog_data);
const unsigned surf_index =
prog_data->binding_table.render_target_start + inst->target;
/* We assume that render targets start at binding table index 0. */
const unsigned surf_index = inst->target;
gen9_fb_READ(p, dst, payload, surf_index,
inst->header_size, inst->size_written / REG_SIZE,