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ac: add ac_build_image_get_sample_count from radeonsi

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Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
This commit is contained in:
Marek Olšák
2019-09-16 19:37:04 -04:00
parent 39e638c14e
commit 0cc233e3dc
3 changed files with 26 additions and 15 deletions
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src/amd/common/ac_llvm_build.c
+19
View File
@@ -2492,6 +2492,25 @@ LLVMValueRef ac_build_image_opcode(struct ac_llvm_context *ctx,
return result;
}
LLVMValueRef ac_build_image_get_sample_count(struct ac_llvm_context *ctx,
LLVMValueRef rsrc)
{
LLVMValueRef samples;
/* Read the samples from the descriptor directly.
* Hardware doesn't have any instruction for this.
*/
samples = LLVMBuildExtractElement(ctx->builder, rsrc,
LLVMConstInt(ctx->i32, 3, 0), "");
samples = LLVMBuildLShr(ctx->builder, samples,
LLVMConstInt(ctx->i32, 16, 0), "");
samples = LLVMBuildAnd(ctx->builder, samples,
LLVMConstInt(ctx->i32, 0xf, 0), "");
samples = LLVMBuildShl(ctx->builder, ctx->i32_1,
samples, "");
return samples;
}
LLVMValueRef ac_build_cvt_pkrtz_f16(struct ac_llvm_context *ctx,
LLVMValueRef args[2])
{
src/amd/common/ac_llvm_build.h
+2
View File
@@ -552,6 +552,8 @@ struct ac_image_args {
LLVMValueRef ac_build_image_opcode(struct ac_llvm_context *ctx,
struct ac_image_args *a);
LLVMValueRef ac_build_image_get_sample_count(struct ac_llvm_context *ctx,
LLVMValueRef rsrc);
LLVMValueRef ac_build_cvt_pkrtz_f16(struct ac_llvm_context *ctx,
LLVMValueRef args[2]);
LLVMValueRef ac_build_cvt_pknorm_i16(struct ac_llvm_context *ctx,
src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
+5 -15
View File
@@ -1685,23 +1685,13 @@ static void si_llvm_emit_txqs(
struct lp_build_emit_data *emit_data)
{
struct si_shader_context *ctx = si_shader_context(bld_base);
LLVMValueRef res, samples;
LLVMValueRef res_ptr, samp_ptr, fmask_ptr = NULL;
LLVMValueRef rsrc;
tex_fetch_ptrs(bld_base, emit_data, &res_ptr, &samp_ptr, &fmask_ptr);
tex_fetch_ptrs(bld_base, emit_data, &rsrc, NULL, NULL);
/* Read the samples from the descriptor directly. */
res = LLVMBuildBitCast(ctx->ac.builder, res_ptr, ctx->v8i32, "");
samples = LLVMBuildExtractElement(ctx->ac.builder, res,
LLVMConstInt(ctx->i32, 3, 0), "");
samples = LLVMBuildLShr(ctx->ac.builder, samples,
LLVMConstInt(ctx->i32, 16, 0), "");
samples = LLVMBuildAnd(ctx->ac.builder, samples,
LLVMConstInt(ctx->i32, 0xf, 0), "");
samples = LLVMBuildShl(ctx->ac.builder, ctx->i32_1,
samples, "");
emit_data->output[emit_data->chan] = samples;
rsrc = LLVMBuildBitCast(ctx->ac.builder, rsrc, ctx->v8i32, "");
emit_data->output[emit_data->chan] =
ac_build_image_get_sample_count(&ctx->ac, rsrc);
}
static LLVMValueRef si_llvm_emit_fbfetch(struct si_shader_context *ctx)