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ac/nir: use ac_build_buffer_load_format for image buffer loads 

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
This commit is contained in:
Marek Olšák 2018-01-30 19:40:43 +01:00
parent bac9fa9f17
commit b0a6053a99
1 changed files with 13 additions and 8 deletions
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21
src/amd/common/ac_nir_to_llvm.c
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@ -3611,14 +3611,19 @@ static LLVMValueRef visit_image_load(struct ac_nir_context *ctx,
const enum glsl_sampler_dim dim = glsl_get_sampler_dim(type);
if (dim == GLSL_SAMPLER_DIM_BUF) {
params[0] = get_sampler_desc(ctx, instr->variables[0], AC_DESC_BUFFER, NULL, true, false);
params[1] = LLVMBuildExtractElement(ctx->ac.builder, get_src(ctx, instr->src[0]),
ctx->ac.i32_0, ""); /* vindex */
params[2] = ctx->ac.i32_0; /* voffset */
params[3] = ctx->ac.i1false; /* glc */
params[4] = ctx->ac.i1false; /* slc */
res = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.buffer.load.format.v4f32", ctx->ac.v4f32,
params, 5, 0);
unsigned mask = nir_ssa_def_components_read(&instr->dest.ssa);
unsigned num_channels = util_last_bit(mask);
LLVMValueRef rsrc, vindex;
rsrc = get_sampler_desc(ctx, instr->variables[0], AC_DESC_BUFFER, NULL, true, false);
vindex = LLVMBuildExtractElement(ctx->ac.builder, get_src(ctx, instr->src[0]),
ctx->ac.i32_0, "");
/* TODO: set "glc" and "can_speculate" when OpenGL needs it. */
res = ac_build_buffer_load_format(&ctx->ac, rsrc, vindex,
ctx->ac.i32_0, num_channels,
false, false);
res = ac_build_expand_to_vec4(&ctx->ac, res, num_channels);
res = trim_vector(&ctx->ac, res, instr->dest.ssa.num_components);
res = ac_to_integer(&ctx->ac, res);