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freedreno/ir3/nir: handle system values

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Signed-off-by: Rob Clark <robclark@freedesktop.org>
This commit is contained in:
Rob Clark 2015-04-10 15:57:29 -04:00
parent 715b2e0dbb
commit 1b936bb9f8
1 changed files with 50 additions and 3 deletions
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53
src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c
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@ -255,9 +255,14 @@ compile_init(struct ir3_shader_variant *so,
if (lowered_tokens != tokens)
free((void *)lowered_tokens);
so->first_immediate = ctx->s->num_uniforms;
/* for now, now driver params: */
so->first_driver_param = so->first_immediate;
so->first_driver_param = so->first_immediate = ctx->s->num_uniforms;
/* one (vec4) slot for vertex id base: */
if (so->type == SHADER_VERTEX)
so->first_immediate++;
/* reserve 4 (vec4) slots for ubo base addresses: */
so->first_immediate += 4;
return ctx;
}
@ -1067,6 +1072,22 @@ emit_intrinisic_store_var(struct ir3_compile *ctx, nir_intrinsic_instr *intr)
}
}
static void add_sysval_input(struct ir3_compile *ctx, unsigned name,
struct ir3_instruction *instr)
{
struct ir3_shader_variant *so = ctx->so;
unsigned r = regid(so->inputs_count, 0);
unsigned n = so->inputs_count++;
so->inputs[n].semantic = ir3_semantic_name(name, 0);
so->inputs[n].compmask = 1;
so->inputs[n].regid = r;
so->inputs[n].interpolate = TGSI_INTERPOLATE_CONSTANT;
so->total_in++;
ctx->block->inputs[r] = instr;
}
static void
emit_intrinisic(struct ir3_compile *ctx, nir_intrinsic_instr *intr)
{
@ -1128,6 +1149,32 @@ emit_intrinisic(struct ir3_compile *ctx, nir_intrinsic_instr *intr)
b->outputs[n] = src[i];
}
break;
case nir_intrinsic_load_base_vertex:
if (!ctx->basevertex) {
/* first four vec4 sysval's reserved for UBOs: */
unsigned r = regid(ctx->so->first_driver_param + 4, 0);
ctx->basevertex = create_uniform(ctx, r);
add_sysval_input(ctx, TGSI_SEMANTIC_BASEVERTEX,
ctx->basevertex);
}
dst[0] = ctx->basevertex;
break;
case nir_intrinsic_load_vertex_id_zero_base:
if (!ctx->vertex_id) {
ctx->vertex_id = create_input(ctx->block, NULL, 0);
add_sysval_input(ctx, TGSI_SEMANTIC_VERTEXID_NOBASE,
ctx->vertex_id);
}
dst[0] = ctx->vertex_id;
break;
case nir_intrinsic_load_instance_id:
if (!ctx->instance_id) {
ctx->instance_id = create_input(ctx->block, NULL, 0);
add_sysval_input(ctx, TGSI_SEMANTIC_INSTANCEID,
ctx->instance_id);
}
dst[0] = ctx->instance_id;
break;
case nir_intrinsic_discard_if:
case nir_intrinsic_discard: {
struct ir3_instruction *cond, *kill;