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ac: add ac_build_export_null() helper

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Imported from RadeonSI.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Samuel Pitoiset
2018-02-07 19:09:12 +01:00
parent 1f4d2433e7
commit bd9f7b7635
3 changed files with 20 additions and 20 deletions
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17
src/amd/common/ac_llvm_build.c
View File

@@ -1347,6 +1347,23 @@ void ac_build_export(struct ac_llvm_context *ctx, struct ac_export_args *a)
AC_FUNC_ATTR_LEGACY);
}
void ac_build_export_null(struct ac_llvm_context *ctx)
{
struct ac_export_args args;
args.enabled_channels = 0x0; /* enabled channels */
args.valid_mask = 1; /* whether the EXEC mask is valid */
args.done = 1; /* DONE bit */
args.target = V_008DFC_SQ_EXP_NULL;
args.compr = 0; /* COMPR flag (0 = 32-bit export) */
args.out[0] = LLVMGetUndef(ctx->f32); /* R */
args.out[1] = LLVMGetUndef(ctx->f32); /* G */
args.out[2] = LLVMGetUndef(ctx->f32); /* B */
args.out[3] = LLVMGetUndef(ctx->f32); /* A */
ac_build_export(ctx, &args);
}
LLVMValueRef ac_build_image_opcode(struct ac_llvm_context *ctx,
struct ac_image_args *a)
{

2
src/amd/common/ac_llvm_build.h
View File

@@ -279,6 +279,8 @@ struct ac_export_args {
void ac_build_export(struct ac_llvm_context *ctx, struct ac_export_args *a);
void ac_build_export_null(struct ac_llvm_context *ctx);
enum ac_image_opcode {
ac_image_sample,
ac_image_gather4,

21
src/gallium/drivers/radeonsi/si_shader.c
View File

@@ -3725,25 +3725,6 @@ static void si_emit_ps_exports(struct si_shader_context *ctx,
ac_build_export(&ctx->ac, &exp->args[i]);
}
static void si_export_null(struct lp_build_tgsi_context *bld_base)
{
struct si_shader_context *ctx = si_shader_context(bld_base);
struct lp_build_context *base = &bld_base->base;
struct ac_export_args args;
args.enabled_channels = 0x0; /* enabled channels */
args.valid_mask = 1; /* whether the EXEC mask is valid */
args.done = 1; /* DONE bit */
args.target = V_008DFC_SQ_EXP_NULL;
args.compr = 0; /* COMPR flag (0 = 32-bit export) */
args.out[0] = base->undef; /* R */
args.out[1] = base->undef; /* G */
args.out[2] = base->undef; /* B */
args.out[3] = base->undef; /* A */
ac_build_export(&ctx->ac, &args);
}
/**
* Return PS outputs in this order:
*
@@ -7735,7 +7716,7 @@ static void si_build_ps_epilog_function(struct si_shader_context *ctx,
if (depth || stencil || samplemask)
si_export_mrt_z(bld_base, depth, stencil, samplemask, &exp);
else if (last_color_export == -1)
si_export_null(bld_base);
ac_build_export_null(&ctx->ac);
if (exp.num)
si_emit_ps_exports(ctx, &exp);