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spirv: Restrict use of descriptor intrinsics to Vulkan

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In ARB_gl_spirv we'll be able to use variables for uniform buffers, so
don't use the descriptor intrinsics to lower the block access.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Caio Marcelo de Oliveira Filho
2019-03-21 22:58:30 -07:00
parent 21dd881416
commit 12131096fa
1 changed files with 8 additions and 1 deletions
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9
src/compiler/spirv/vtn_variables.c
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@@ -100,6 +100,8 @@ static nir_ssa_def *
vtn_variable_resource_index(struct vtn_builder *b, struct vtn_variable *var,
nir_ssa_def *desc_array_index)
{
vtn_assert(b->options->environment == NIR_SPIRV_VULKAN);
if (!desc_array_index) {
vtn_assert(glsl_type_is_struct_or_ifc(var->type->type));
desc_array_index = nir_imm_int(&b->nb, 0);
@@ -134,6 +136,8 @@ static nir_ssa_def *
vtn_resource_reindex(struct vtn_builder *b, enum vtn_variable_mode mode,
nir_ssa_def *base_index, nir_ssa_def *offset_index)
{
vtn_assert(b->options->environment == NIR_SPIRV_VULKAN);
nir_intrinsic_instr *instr =
nir_intrinsic_instr_create(b->nb.shader,
nir_intrinsic_vulkan_resource_reindex);
@@ -161,6 +165,8 @@ static nir_ssa_def *
vtn_descriptor_load(struct vtn_builder *b, enum vtn_variable_mode mode,
nir_ssa_def *desc_index)
{
vtn_assert(b->options->environment == NIR_SPIRV_VULKAN);
nir_intrinsic_instr *desc_load =
nir_intrinsic_instr_create(b->nb.shader,
nir_intrinsic_load_vulkan_descriptor);
@@ -196,7 +202,8 @@ vtn_nir_deref_pointer_dereference(struct vtn_builder *b,
nir_deref_instr *tail;
if (base->deref) {
tail = base->deref;
} else if (vtn_pointer_is_external_block(b, base)) {
} else if (b->options->environment == NIR_SPIRV_VULKAN &&
vtn_pointer_is_external_block(b, base)) {
nir_ssa_def *block_index = base->block_index;
/* We dereferencing an external block pointer. Correctness of this