diff --git a/src/shader_recompiler/backend/spirv/emit_context.cpp b/src/shader_recompiler/backend/spirv/emit_context.cpp
index df53e58a88..74c42233d7 100644
--- a/src/shader_recompiler/backend/spirv/emit_context.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_context.cpp
@@ -135,6 +135,45 @@ Id DefineOutput(EmitContext& ctx, Id type, std::optional<spv::BuiltIn> builtin =
return DefineVariable(ctx, type, builtin, spv::StorageClass::Output);
}
+void DefineGenericOutput(EmitContext& ctx, size_t index) {
+ static constexpr std::string_view swizzle{"xyzw"};
+ const size_t base_attr_index{static_cast<size_t>(IR::Attribute::Generic0X) + index * 4};
+ u32 element{0};
+ while (element < 4) {
+ const u32 remainder{4 - element};
+ const TransformFeedbackVarying* xfb_varying{};
+ if (!ctx.profile.xfb_varyings.empty()) {
+ xfb_varying = &ctx.profile.xfb_varyings[base_attr_index + element];
+ xfb_varying = xfb_varying && xfb_varying->components > 0 ? xfb_varying : nullptr;
+ }
+ const u32 num_components{xfb_varying ? xfb_varying->components : remainder};
+
+ const Id id{DefineOutput(ctx, ctx.F32[num_components])};
+ ctx.Decorate(id, spv::Decoration::Location, static_cast<u32>(index));
+ if (element > 0) {
+ ctx.Decorate(id, spv::Decoration::Component, element);
+ }
+ if (xfb_varying) {
+ ctx.Decorate(id, spv::Decoration::XfbBuffer, xfb_varying->buffer);
+ ctx.Decorate(id, spv::Decoration::XfbStride, xfb_varying->stride);
+ ctx.Decorate(id, spv::Decoration::Offset, xfb_varying->offset);
+ }
+ if (num_components < 4 || element > 0) {
+ ctx.Name(id, fmt::format("out_attr{}", index));
+ } else {
+ const std::string_view subswizzle{swizzle.substr(element, num_components)};
+ ctx.Name(id, fmt::format("out_attr{}_{}", index, subswizzle));
+ }
+ const GenericElementInfo info{
+ .id = id,
+ .first_element = element,
+ .num_components = num_components,
+ };
+ std::fill_n(ctx.output_generics[index].begin(), num_components, info);
+ element += num_components;
+ }
+}
+
Id GetAttributeType(EmitContext& ctx, AttributeType type) {
switch (type) {
case AttributeType::Float:
@@ -663,12 +702,15 @@ void EmitContext::DefineAttributeMemAccess(const Info& info) {
OpReturn();
++label_index;
}
- for (size_t i = 0; i < info.stores_generics.size(); i++) {
+ for (size_t i = 0; i < info.stores_generics.size(); ++i) {
if (!info.stores_generics[i]) {
continue;
}
+ if (output_generics[i][0].num_components != 4) {
+ throw NotImplementedException("Physical stores and transform feedbacks");
+ }
AddLabel(labels[label_index]);
- const Id generic_id{output_generics.at(i)};
+ const Id generic_id{output_generics[i][0].id};
const Id pointer{OpAccessChain(output_f32, generic_id, masked_index)};
OpStore(pointer, store_value);
OpReturn();
@@ -1015,11 +1057,9 @@ void EmitContext::DefineOutputs(const Info& info) {
}
viewport_index = DefineOutput(*this, U32[1], spv::BuiltIn::ViewportIndex);
}
- for (size_t i = 0; i < info.stores_generics.size(); ++i) {
- if (info.stores_generics[i]) {
- output_generics[i] = DefineOutput(*this, F32[4]);
- Decorate(output_generics[i], spv::Decoration::Location, static_cast<u32>(i));
- Name(output_generics[i], fmt::format("out_attr{}", i));
+ for (size_t index = 0; index < info.stores_generics.size(); ++index) {
+ if (info.stores_generics[index]) {
+ DefineGenericOutput(*this, index);
}
}
if (stage == Stage::Fragment) {
diff --git a/src/shader_recompiler/backend/spirv/emit_context.h b/src/shader_recompiler/backend/spirv/emit_context.h
index cade1fa0d6..b27e5540c9 100644
--- a/src/shader_recompiler/backend/spirv/emit_context.h
+++ b/src/shader_recompiler/backend/spirv/emit_context.h
@@ -79,6 +79,12 @@ struct StorageDefinitions {
Id U32x4{};
};
+struct GenericElementInfo {
+ Id id{};
+ u32 first_element{};
+ u32 num_components{};
+};
+
class EmitContext final : public Sirit::Module {
public:
explicit EmitContext(const Profile& profile, IR::Program& program, u32& binding);
@@ -189,7 +195,7 @@ public:
Id output_point_size{};
Id output_position{};
- std::array<Id, 32> output_generics{};
+ std::array<std::array<GenericElementInfo, 4>, 32> output_generics{};
std::array<Id, 8> frag_color{};
Id frag_depth{};
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.cpp b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
index 7ad00c4343..444ba276f7 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
@@ -288,6 +288,9 @@ void SetupCapabilities(const Profile& profile, const Info& info, EmitContext& ct
if (info.uses_typeless_image_writes) {
ctx.AddCapability(spv::Capability::StorageImageWriteWithoutFormat);
}
+ if (!ctx.profile.xfb_varyings.empty()) {
+ ctx.AddCapability(spv::Capability::TransformFeedback);
+ }
// TODO: Track this usage
ctx.AddCapability(spv::Capability::ImageGatherExtended);
ctx.AddCapability(spv::Capability::ImageQuery);
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp
index a91b4c212e..f9c151a5c5 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp
@@ -40,11 +40,17 @@ Id AttrPointer(EmitContext& ctx, Id pointer_type, Id vertex, Id base, Args&&...
}
std::optional<Id> OutputAttrPointer(EmitContext& ctx, IR::Attribute attr) {
- const u32 element{static_cast<u32>(attr) % 4};
- const auto element_id{[&] { return ctx.Constant(ctx.U32[1], element); }};
if (IR::IsGeneric(attr)) {
const u32 index{IR::GenericAttributeIndex(attr)};
- return ctx.OpAccessChain(ctx.output_f32, ctx.output_generics.at(index), element_id());
+ const u32 element{IR::GenericAttributeElement(attr)};
+ const GenericElementInfo& info{ctx.output_generics.at(index).at(element)};
+ if (info.num_components == 1) {
+ return info.id;
+ } else {
+ const u32 index_element{element - info.first_element};
+ const Id index_id{ctx.Constant(ctx.U32[1], index_element)};
+ return ctx.OpAccessChain(ctx.output_f32, info.id, index_id);
+ }
}
switch (attr) {
case IR::Attribute::PointSize:
@@ -52,8 +58,11 @@ std::optional<Id> OutputAttrPointer(EmitContext& ctx, IR::Attribute attr) {
case IR::Attribute::PositionX:
case IR::Attribute::PositionY:
case IR::Attribute::PositionZ:
- case IR::Attribute::PositionW:
- return ctx.OpAccessChain(ctx.output_f32, ctx.output_position, element_id());
+ case IR::Attribute::PositionW: {
+ const u32 element{static_cast<u32>(attr) % 4};
+ const Id element_id{ctx.Constant(ctx.U32[1], element)};
+ return ctx.OpAccessChain(ctx.output_f32, ctx.output_position, element_id);
+ }
case IR::Attribute::ClipDistance0:
case IR::Attribute::ClipDistance1:
case IR::Attribute::ClipDistance2:
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_special.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_special.cpp
index fee740c084..7af29e4dd7 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv_special.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv_special.cpp
@@ -22,6 +22,21 @@ void SetFixedPipelinePointSize(EmitContext& ctx) {
ctx.OpStore(ctx.output_point_size, ctx.Constant(ctx.F32[1], point_size));
}
}
+
+Id DefaultVarying(EmitContext& ctx, u32 num_components, u32 element, Id zero, Id one,
+ Id default_vector) {
+ switch (num_components) {
+ case 1:
+ return element == 3 ? one : zero;
+ case 2:
+ return ctx.ConstantComposite(ctx.F32[2], zero, element + 1 == 3 ? one : zero);
+ case 3:
+ return ctx.ConstantComposite(ctx.F32[3], zero, zero, element + 2 == 3 ? one : zero);
+ case 4:
+ return default_vector;
+ }
+ throw InvalidArgument("Bad element");
+}
} // Anonymous namespace
void EmitPrologue(EmitContext& ctx) {
@@ -30,9 +45,17 @@ void EmitPrologue(EmitContext& ctx) {
const Id one{ctx.Constant(ctx.F32[1], 1.0f)};
const Id default_vector{ctx.ConstantComposite(ctx.F32[4], zero, zero, zero, one)};
ctx.OpStore(ctx.output_position, default_vector);
- for (const Id generic_id : ctx.output_generics) {
- if (Sirit::ValidId(generic_id)) {
- ctx.OpStore(generic_id, default_vector);
+ for (const auto& info : ctx.output_generics) {
+ if (info[0].num_components == 0) {
+ continue;
+ }
+ u32 element{0};
+ while (element < 4) {
+ const auto& element_info{info[element]};
+ const u32 num{element_info.num_components};
+ const Id value{DefaultVarying(ctx, num, element, zero, one, default_vector)};
+ ctx.OpStore(element_info.id, value);
+ element += num;
}
}
}
diff --git a/src/shader_recompiler/frontend/ir/attribute.cpp b/src/shader_recompiler/frontend/ir/attribute.cpp
index 7993e5c436..4d0b8b8e5c 100644
--- a/src/shader_recompiler/frontend/ir/attribute.cpp
+++ b/src/shader_recompiler/frontend/ir/attribute.cpp
@@ -20,6 +20,13 @@ u32 GenericAttributeIndex(Attribute attribute) {
return (static_cast<u32>(attribute) - static_cast<u32>(Attribute::Generic0X)) / 4u;
}
+u32 GenericAttributeElement(Attribute attribute) {
+ if (!IsGeneric(attribute)) {
+ throw InvalidArgument("Attribute is not generic {}", attribute);
+ }
+ return static_cast<u32>(attribute) % 4;
+}
+
std::string NameOf(Attribute attribute) {
switch (attribute) {
case Attribute::PrimitiveId:
diff --git a/src/shader_recompiler/frontend/ir/attribute.h b/src/shader_recompiler/frontend/ir/attribute.h
index 34ec7e0cd0..8bf2ddf30d 100644
--- a/src/shader_recompiler/frontend/ir/attribute.h
+++ b/src/shader_recompiler/frontend/ir/attribute.h
@@ -226,6 +226,8 @@ enum class Attribute : u64 {
[[nodiscard]] u32 GenericAttributeIndex(Attribute attribute);
+[[nodiscard]] u32 GenericAttributeElement(Attribute attribute);
+
[[nodiscard]] std::string NameOf(Attribute attribute);
} // namespace Shader::IR
diff --git a/src/shader_recompiler/profile.h b/src/shader_recompiler/profile.h
index 919bec4e2c..5ecae71b95 100644
--- a/src/shader_recompiler/profile.h
+++ b/src/shader_recompiler/profile.h
@@ -5,6 +5,7 @@
#pragma once
#include <array>
+#include <vector>
#include <optional>
#include "common/common_types.h"
@@ -26,6 +27,13 @@ enum class InputTopology {
TrianglesAdjacency,
};
+struct TransformFeedbackVarying {
+ u32 buffer{};
+ u32 stride{};
+ u32 offset{};
+ u32 components{};
+};
+
struct Profile {
u32 supported_spirv{0x00010000};
@@ -58,6 +66,8 @@ struct Profile {
InputTopology input_topology{};
std::optional<float> fixed_state_point_size;
+
+ std::vector<TransformFeedbackVarying> xfb_varyings;
};
} // namespace Shader
diff --git a/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp b/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp
index d8f6839072..6a3baf837a 100644
--- a/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp
+++ b/src/video_core/renderer_vulkan/fixed_pipeline_state.cpp
@@ -52,6 +52,8 @@ void FixedPipelineState::Refresh(Tegra::Engines::Maxwell3D& maxwell3d,
const u32 topology_index = static_cast<u32>(regs.draw.topology.Value());
raw1 = 0;
+ no_extended_dynamic_state.Assign(has_extended_dynamic_state ? 0 : 1);
+ xfb_enabled.Assign(regs.tfb_enabled != 0);
primitive_restart_enable.Assign(regs.primitive_restart.enabled != 0 ? 1 : 0);
depth_bias_enable.Assign(enabled_lut[POLYGON_OFFSET_ENABLE_LUT[topology_index]] != 0 ? 1 : 0);
depth_clamp_disabled.Assign(regs.view_volume_clip_control.depth_clamp_disabled.Value());
@@ -113,10 +115,12 @@ void FixedPipelineState::Refresh(Tegra::Engines::Maxwell3D& maxwell3d,
return static_cast<u16>(viewport.swizzle.raw);
});
}
- if (!has_extended_dynamic_state) {
- no_extended_dynamic_state.Assign(1);
+ if (no_extended_dynamic_state != 0) {
dynamic_state.Refresh(regs);
}
+ if (xfb_enabled != 0) {
+ xfb_state.Refresh(regs);
+ }
}
void FixedPipelineState::BlendingAttachment::Refresh(const Maxwell& regs, size_t index) {
@@ -158,6 +162,17 @@ void FixedPipelineState::BlendingAttachment::Refresh(const Maxwell& regs, size_t
enable.Assign(1);
}
+void FixedPipelineState::TransformFeedbackState::Refresh(const Maxwell& regs) {
+ std::ranges::transform(regs.tfb_layouts, layouts.begin(), [](const auto& layout) {
+ return Layout{
+ .stream = layout.stream,
+ .varying_count = layout.varying_count,
+ .stride = layout.stride,
+ };
+ });
+ varyings = regs.tfb_varying_locs;
+}
+
void FixedPipelineState::DynamicState::Refresh(const Maxwell& regs) {
u32 packed_front_face = PackFrontFace(regs.front_face);
if (regs.screen_y_control.triangle_rast_flip != 0) {
diff --git a/src/video_core/renderer_vulkan/fixed_pipeline_state.h b/src/video_core/renderer_vulkan/fixed_pipeline_state.h
index 348f1d6ce6..5568c4f728 100644
--- a/src/video_core/renderer_vulkan/fixed_pipeline_state.h
+++ b/src/video_core/renderer_vulkan/fixed_pipeline_state.h
@@ -130,6 +130,18 @@ struct FixedPipelineState {
}
};
+ struct TransformFeedbackState {
+ struct Layout {
+ u32 stream;
+ u32 varying_count;
+ u32 stride;
+ };
+ std::array<Layout, Maxwell::NumTransformFeedbackBuffers> layouts;
+ std::array<std::array<u8, 128>, Maxwell::NumTransformFeedbackBuffers> varyings;
+
+ void Refresh(const Maxwell& regs);
+ };
+
struct DynamicState {
union {
u32 raw1;
@@ -168,6 +180,7 @@ struct FixedPipelineState {
union {
u32 raw1;
BitField<0, 1, u32> no_extended_dynamic_state;
+ BitField<1, 1, u32> xfb_enabled;
BitField<2, 1, u32> primitive_restart_enable;
BitField<3, 1, u32> depth_bias_enable;
BitField<4, 1, u32> depth_clamp_disabled;
@@ -199,6 +212,7 @@ struct FixedPipelineState {
std::array<BlendingAttachment, Maxwell::NumRenderTargets> attachments;
std::array<u16, Maxwell::NumViewports> viewport_swizzles;
DynamicState dynamic_state;
+ TransformFeedbackState xfb_state;
void Refresh(Tegra::Engines::Maxwell3D& maxwell3d, bool has_extended_dynamic_state);
@@ -211,8 +225,16 @@ struct FixedPipelineState {
}
size_t Size() const noexcept {
- const size_t total_size = sizeof *this;
- return total_size - (no_extended_dynamic_state != 0 ? 0 : sizeof(DynamicState));
+ if (xfb_enabled != 0) {
+ // When transform feedback is enabled, use the whole struct
+ return sizeof(*this);
+ } else if (no_extended_dynamic_state != 0) {
+ // Dynamic state is enabled, we can enable more
+ return offsetof(FixedPipelineState, xfb_state);
+ } else {
+ // No XFB, extended dynamic state enabled
+ return offsetof(FixedPipelineState, dynamic_state);
+ }
}
};
static_assert(std::has_unique_object_representations_v<FixedPipelineState>);
diff --git a/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp b/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp
index 8a59a26112..de52d0f306 100644
--- a/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp
+++ b/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp
@@ -248,6 +248,10 @@ namespace {
using Shader::Backend::SPIRV::EmitSPIRV;
using Shader::Maxwell::TranslateProgram;
+// TODO: Move this to a separate file
+constexpr std::array<char, 8> MAGIC_NUMBER{'y', 'u', 'z', 'u', 'c', 'a', 'c', 'h'};
+constexpr u32 CACHE_VERSION{1};
+
class GraphicsEnvironment final : public GenericEnvironment {
public:
explicit GraphicsEnvironment() = default;
@@ -379,13 +383,14 @@ void SerializePipeline(const Key& key, const Envs& envs, const std::string& file
try {
std::ofstream file;
file.exceptions(std::ifstream::failbit);
- Common::FS::OpenFStream(file, filename, std::ios::binary | std::ios::app);
+ Common::FS::OpenFStream(file, filename, std::ios::binary | std::ios::ate | std::ios::app);
if (!file.is_open()) {
LOG_ERROR(Common_Filesystem, "Failed to open pipeline cache file {}", filename);
return;
}
if (file.tellp() == 0) {
- // Write header...
+ file.write(MAGIC_NUMBER.data(), MAGIC_NUMBER.size())
+ .write(reinterpret_cast<const char*>(&CACHE_VERSION), sizeof(CACHE_VERSION));
}
const std::span key_span(reinterpret_cast<const char*>(&key), sizeof(key));
SerializePipeline(key_span, MakeSpan(envs), file);
@@ -520,8 +525,27 @@ void PipelineCache::LoadDiskResources(u64 title_id, std::stop_token stop_loading
file.exceptions(std::ifstream::failbit);
const auto end{file.tellg()};
file.seekg(0, std::ios::beg);
- // Read header...
+ std::array<char, 8> magic_number;
+ u32 cache_version;
+ file.read(magic_number.data(), magic_number.size())
+ .read(reinterpret_cast<char*>(&cache_version), sizeof(cache_version));
+ if (magic_number != MAGIC_NUMBER || cache_version != CACHE_VERSION) {
+ file.close();
+ if (Common::FS::Delete(pipeline_cache_filename)) {
+ if (magic_number != MAGIC_NUMBER) {
+ LOG_ERROR(Render_Vulkan, "Invalid pipeline cache file");
+ }
+ if (cache_version != CACHE_VERSION) {
+ LOG_INFO(Render_Vulkan, "Deleting old pipeline cache");
+ }
+ } else {
+ LOG_ERROR(Render_Vulkan,
+ "Invalid pipeline cache file and failed to delete it in \"{}\"",
+ pipeline_cache_filename);
+ }
+ return;
+ }
while (file.tellg() != end) {
if (stop_loading) {
return;
@@ -879,6 +903,88 @@ static Shader::AttributeType CastAttributeType(const FixedPipelineState::VertexA
return Shader::AttributeType::Float;
}
+static std::vector<Shader::TransformFeedbackVarying> MakeTransformFeedbackVaryings(
+ const GraphicsPipelineCacheKey& key) {
+ static constexpr std::array VECTORS{
+ 28, // gl_Position
+ 32, // Generic 0
+ 36, // Generic 1
+ 40, // Generic 2
+ 44, // Generic 3
+ 48, // Generic 4
+ 52, // Generic 5
+ 56, // Generic 6
+ 60, // Generic 7
+ 64, // Generic 8
+ 68, // Generic 9
+ 72, // Generic 10
+ 76, // Generic 11
+ 80, // Generic 12
+ 84, // Generic 13
+ 88, // Generic 14
+ 92, // Generic 15
+ 96, // Generic 16
+ 100, // Generic 17
+ 104, // Generic 18
+ 108, // Generic 19
+ 112, // Generic 20
+ 116, // Generic 21
+ 120, // Generic 22
+ 124, // Generic 23
+ 128, // Generic 24
+ 132, // Generic 25
+ 136, // Generic 26
+ 140, // Generic 27
+ 144, // Generic 28
+ 148, // Generic 29
+ 152, // Generic 30
+ 156, // Generic 31
+ 160, // gl_FrontColor
+ 164, // gl_FrontSecondaryColor
+ 160, // gl_BackColor
+ 164, // gl_BackSecondaryColor
+ 192, // gl_TexCoord[0]
+ 196, // gl_TexCoord[1]
+ 200, // gl_TexCoord[2]
+ 204, // gl_TexCoord[3]
+ 208, // gl_TexCoord[4]
+ 212, // gl_TexCoord[5]
+ 216, // gl_TexCoord[6]
+ 220, // gl_TexCoord[7]
+ };
+ std::vector<Shader::TransformFeedbackVarying> xfb(256);
+ for (size_t buffer = 0; buffer < Maxwell::NumTransformFeedbackBuffers; ++buffer) {
+ const auto& locations = key.state.xfb_state.varyings[buffer];
+ const auto& layout = key.state.xfb_state.layouts[buffer];
+ const u32 varying_count = layout.varying_count;
+ u32 highest = 0;
+ for (u32 offset = 0; offset < varying_count; ++offset) {
+ const u32 base_offset = offset;
+ const u8 location = locations[offset];
+
+ Shader::TransformFeedbackVarying varying;
+ varying.buffer = layout.stream;
+ varying.stride = layout.stride;
+ varying.offset = offset * 4;
+ varying.components = 1;
+
+ if (std::ranges::find(VECTORS, Common::AlignDown(location, 4)) != VECTORS.end()) {
+ UNIMPLEMENTED_IF_MSG(location % 4 != 0, "Unaligned TFB");
+
+ const u8 base_index = location / 4;
+ while (offset + 1 < varying_count && base_index == locations[offset + 1] / 4) {
+ ++offset;
+ ++varying.components;
+ }
+ }
+ xfb[location] = varying;
+ highest = std::max(highest, (base_offset + varying.components) * 4);
+ }
+ UNIMPLEMENTED_IF(highest != layout.stride);
+ }
+ return xfb;
+}
+
Shader::Profile PipelineCache::MakeProfile(const GraphicsPipelineCacheKey& key,
const Shader::IR::Program& program) {
Shader::Profile profile{base_profile};
@@ -893,6 +999,9 @@ Shader::Profile PipelineCache::MakeProfile(const GraphicsPipelineCacheKey& key,
if (key.state.topology == Maxwell::PrimitiveTopology::Points) {
profile.fixed_state_point_size = point_size;
}
+ if (key.state.xfb_enabled != 0) {
+ profile.xfb_varyings = MakeTransformFeedbackVaryings(key);
+ }
profile.convert_depth_mode = gl_ndc;
}
std::ranges::transform(key.state.attributes, profile.generic_input_types.begin(),
@@ -902,6 +1011,9 @@ Shader::Profile PipelineCache::MakeProfile(const GraphicsPipelineCacheKey& key,
if (program.output_topology == Shader::OutputTopology::PointList) {
profile.fixed_state_point_size = point_size;
}
+ if (key.state.xfb_enabled != 0) {
+ profile.xfb_varyings = MakeTransformFeedbackVaryings(key);
+ }
profile.convert_depth_mode = gl_ndc;
break;
default: