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92140405c1e7e98f44e9c25ceb89c0f1cb2f5477
MobileGL/MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp
T
BZLZHH 92140405c1 [Feat] (DirectVulkan): emulate GL_LINE_LOOP with closed indexed line strips 
Vulkan has no LINE_LOOP topology and the frontend used to reject the mode
with GL_INVALID_OPERATION, which is itself non-conformant (several KHR-GL33
transform_feedback tests draw line loops and expect no error). DrawArrays,
DrawElements and DrawElementsBaseVertex now rewrite the draw into an
indexed GL_LINE_STRIP whose synthesized uint32 index list revisits the
first vertex, delivered through the client-memory index path (a new
forceClientMemory flag keeps a bound element-array buffer from hijacking
the synthesized pointer). Entry points without the rewrite degrade to an
open line strip instead of a triangle list.
2026-07-31 16:25:46 -04:00

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// MobileGL - MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp
// Copyright (c) 2025-2026 MobileGL-Dev
// Licensed under the GNU Lesser General Public License v3.0:
// https://www.gnu.org/licenses/gpl-3.0.txt
// https://www.gnu.org/licenses/lgpl-3.0.txt
// SPDX-License-Identifier: LGPL-3.0-only
// End of Source File Header
#include "DirectVulkan.h"
#include "DirectVulkanResourceState.h"
#include "MG_Backend/BackendObjects.h"
#include "MG_State/GLState/Core.h"
#include "MG_State/GLState/ErrorState/ErrorInfo.h"
#include "MG_Impl/GLImpl/Framebuffer/GL_Framebuffer.h"
#include "MG_Util/Converters/GLToMG/TextureEnumConverter.h"
#include "MG_Util/Metrics/TextureMetrics.h"
#include "MG_Util/Miscellany/IndexGenerator.h"
#include <atomic>
#include <cstring>
#include <spirv_reflect.h>
namespace MobileGL::MG_Backend::DirectVulkan {
// Leak-at-exit storage; see GlobalObjects.cpp.
UniquePtr<VulkanRenderer>& pVulkanRenderer = *new UniquePtr<VulkanRenderer>();
namespace {
// Generation of the live VulkanRenderer instance, mirroring
// DirectGLES's g_syncContextGeneration. BackendObject_DirectVulkan
// bumps it (BumpRendererGeneration) wherever pVulkanRenderer is reset
// or recreated. Fence and timer-query handles are stamped with the
// generation they were created under: a stale stamp means the frame
// serials and query-pool slots the handle refers to belong to a
// destroyed renderer and must never be dereferenced against the
// current one (a new renderer restarts its frame-serial counter and
// reuses pool indices). Atomic because handles may be polled from a
// thread other than the EGL thread that recreates the renderer.
std::atomic<Uint64> g_rendererGeneration{1};
} // namespace
Uint64 GetRendererGeneration() {
return g_rendererGeneration.load(std::memory_order_acquire);
}
void BumpRendererGeneration() {
g_rendererGeneration.fetch_add(1, std::memory_order_acq_rel);
}
namespace {
struct BufferVariableResource {
String name;
GLuint blockIndex = 0;
GLint offset = 0;
GLint size = 0;
};
struct StorageBlockResource {
String name;
GLuint binding = 0;
GLint dataSize = 0;
Vector<GLuint> activeVariables;
};
struct ProgramResourceCache {
// Lifetime id of the program the cached reflection belongs to. GL names are
// recycled (IndexGenerator hands freed indices straight back), and a
// recreated program's backendStateVersion restarts at the same small values,
// so the version alone can collide; the never-reused lifetime id makes the
// slot's ownership unambiguous.
Uint64 programLifetimeId = 0;
Uint32 backendStateVersion = 0;
Vector<StorageBlockResource> storageBlocks;
Vector<BufferVariableResource> bufferVariables;
GLint computeWorkGroupSize[3] = {1, 1, 1};
};
struct DrawElementsIndirectCommand {
Uint32 count = 0;
Uint32 instanceCount = 0;
Uint32 firstIndex = 0;
Int32 baseVertex = 0;
Uint32 baseInstance = 0;
};
struct DrawArraysIndirectCommand {
Uint32 count = 0;
Uint32 instanceCount = 0;
Uint32 first = 0;
Uint32 baseInstance = 0;
};
// Keyed by GL program name so the freed-name reuse in IndexGenerator bounds the
// map at the peak-simultaneous-program high-water mark; each slot's ownership is
// checked against the program's lifetime id before it is served (see
// GetProgramResourceCache). Cleared wholesale at EGL teardown via
// ClearProgramResourceCaches.
UnorderedMap<GLuint, ProgramResourceCache> g_programResourceCaches;
void ClearReadPixelsOutput(GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels) {
if (!pixels || width <= 0 || height <= 0) {
return;
}
const auto inputFormat = MG_Util::ConvertGLEnumToTextureInputFormat(format);
const auto inputType = MG_Util::ConvertGLEnumToTexturePixelDataType(type);
const SizeT size = MG_Util::CalculateInputTextureImageSize(inputFormat, inputType,
IntVec3(width, height, 1));
if (size > 0) {
std::memset(pixels, 0, size);
}
}
String NormalizeDescriptorName(const SpvReflectDescriptorBinding& binding) {
const char* rawName = binding.name;
if (binding.type_description != nullptr && binding.type_description->type_name != nullptr) {
rawName = binding.type_description->type_name;
}
if (rawName == nullptr) {
return {};
}
String name = rawName;
const auto arraySuffix = name.find("[0]");
if (arraySuffix != String::npos) {
name = name.substr(0, arraySuffix);
}
return name;
}
void AddBufferVariablesRecursive(const SpvReflectBlockVariable& variable, const String& prefix,
GLuint blockIndex, Vector<BufferVariableResource>& variables,
Vector<GLuint>& activeVariables) {
for (Uint32 memberIndex = 0; memberIndex < variable.member_count; ++memberIndex) {
const auto& member = variable.members[memberIndex];
String name = prefix;
if (!name.empty()) {
name += ".";
}
name += member.name ? member.name : "";
if (member.member_count > 0) {
AddBufferVariablesRecursive(member, name, blockIndex, variables, activeVariables);
continue;
}
BufferVariableResource resource{};
resource.name = name;
resource.blockIndex = blockIndex;
resource.offset = static_cast<GLint>(member.offset);
resource.size = static_cast<GLint>(member.size);
const GLuint variableIndex = static_cast<GLuint>(variables.size());
variables.push_back(resource);
activeVariables.push_back(variableIndex);
}
}
ProgramResourceCache& GetProgramResourceCache(const MG_State::GLState::ProgramObject& program) {
auto& cache = g_programResourceCaches[program.GetExternalIndex()];
const Uint64 programLifetimeId = program.GetLifetimeId();
const Uint32 backendStateVersion = program.GetBackendStateVersion();
// The lifetime id must match too: a new program that reuses a deleted
// program's name and happens to land on the same backendStateVersion (both
// count from zero) would otherwise be served the dead program's reflection.
if (cache.programLifetimeId == programLifetimeId &&
cache.backendStateVersion == backendStateVersion &&
(!cache.storageBlocks.empty() || !cache.bufferVariables.empty())) {
return cache;
}
cache = {};
cache.programLifetimeId = programLifetimeId;
cache.backendStateVersion = backendStateVersion;
Vector<SpvReflectShaderModule> modules;
Vector<Bool> validModules;
const auto& spirvs = program.GetGeneratedSpirv();
for (const auto& spirv : spirvs) {
if (spirv.empty()) {
continue;
}
SpvReflectShaderModule module{};
const SpvReflectResult result =
spvReflectCreateShaderModule(spirv.size() * sizeof(Uint), spirv.data(), &module);
if (result != SPV_REFLECT_RESULT_SUCCESS) {
continue;
}
modules.push_back(module);
validModules.push_back(true);
}
for (auto& module : modules) {
for (Uint32 entryIndex = 0; entryIndex < module.entry_point_count; ++entryIndex) {
const auto& entryPoint = module.entry_points[entryIndex];
if ((entryPoint.shader_stage & SPV_REFLECT_SHADER_STAGE_COMPUTE_BIT) == 0) {
continue;
}
cache.computeWorkGroupSize[0] = static_cast<GLint>(std::max<Uint32>(entryPoint.local_size.x, 1));
cache.computeWorkGroupSize[1] = static_cast<GLint>(std::max<Uint32>(entryPoint.local_size.y, 1));
cache.computeWorkGroupSize[2] = static_cast<GLint>(std::max<Uint32>(entryPoint.local_size.z, 1));
}
uint32_t bindingCount = 0;
SpvReflectResult result = spvReflectEnumerateDescriptorBindings(&module, &bindingCount, nullptr);
if (result != SPV_REFLECT_RESULT_SUCCESS || bindingCount == 0) {
continue;
}
Vector<SpvReflectDescriptorBinding*> bindings(bindingCount);
result = spvReflectEnumerateDescriptorBindings(&module, &bindingCount, bindings.data());
if (result != SPV_REFLECT_RESULT_SUCCESS) {
continue;
}
std::sort(bindings.begin(), bindings.end(), [](const auto* lhs, const auto* rhs) {
const String lhsName = lhs ? NormalizeDescriptorName(*lhs) : String();
const String rhsName = rhs ? NormalizeDescriptorName(*rhs) : String();
if (lhsName != rhsName) return lhsName < rhsName;
return lhs->binding < rhs->binding;
});
for (const auto* binding : bindings) {
if (binding == nullptr ||
binding->descriptor_type != SPV_REFLECT_DESCRIPTOR_TYPE_STORAGE_BUFFER) {
continue;
}
const String blockName = NormalizeDescriptorName(*binding);
if (blockName.empty()) {
continue;
}
const auto existing = std::find_if(
cache.storageBlocks.begin(), cache.storageBlocks.end(),
[&](const StorageBlockResource& block) { return block.name == blockName; });
if (existing != cache.storageBlocks.end()) {
continue;
}
StorageBlockResource block{};
block.name = blockName;
block.binding = binding->binding;
block.dataSize = static_cast<GLint>(binding->block.size);
const GLuint blockIndex = static_cast<GLuint>(cache.storageBlocks.size());
AddBufferVariablesRecursive(binding->block, blockName, blockIndex, cache.bufferVariables,
block.activeVariables);
cache.storageBlocks.push_back(block);
}
}
for (SizeT i = 0; i < modules.size(); ++i) {
if (validModules[i]) {
spvReflectDestroyShaderModule(&modules[i]);
}
}
return cache;
}
MG_State::GLState::ProgramObject* TryGetDirectVulkanProgram(GLuint program) {
if (!MG_State::pGLContext->ValidateProgramName(program)) {
return nullptr;
}
auto& programObject = MG_State::pGLContext->GetProgramObject(program);
return programObject.get();
}
void CopyResourceName(const String& source, GLsizei bufSize, GLsizei* length, GLchar* name) {
const GLsizei writtenLength = static_cast<GLsizei>(source.size());
if (length) {
*length = writtenLength;
}
if (name && bufSize > 0) {
const GLsizei copyLength = std::min<GLsizei>(bufSize - 1, writtenLength);
std::memcpy(name, source.data(), static_cast<SizeT>(copyLength));
name[copyLength] = '\0';
}
}
const Uint8* ResolveIndirectCommandBytes(const void* indirect, SizeT requiredBytes, const char* label) {
auto drawBuffer = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::DrawIndirect).GetBoundObject();
if (drawBuffer) {
drawBuffer->SyncPersistentMappedRange();
const SizeT commandOffset = reinterpret_cast<SizeT>(indirect);
if (drawBuffer->MappedData() == nullptr || commandOffset + requiredBytes > drawBuffer->GetSize()) {
MGLOG_E("%s skipped: invalid GL_DRAW_INDIRECT_BUFFER binding or range", label);
return nullptr;
}
return drawBuffer->MappedData() + commandOffset;
}
if (!indirect) {
MGLOG_E("%s skipped: indirect pointer is null", label);
return nullptr;
}
return reinterpret_cast<const Uint8*>(indirect);
}
Vector<GLuint> GetUniformBlockActiveVariables(const MG_State::GLState::ProgramObject& program,
GLuint blockIndex) {
Vector<GLuint> activeVariables;
const Uint uniformCount = program.GetUniformCount();
activeVariables.reserve(uniformCount);
for (Uint uniformIndex = 0; uniformIndex < uniformCount; ++uniformIndex) {
if (program.GetActiveUniformBlockIndex(uniformIndex) == static_cast<Int>(blockIndex)) {
activeVariables.push_back(uniformIndex);
}
}
return activeVariables;
}
GLuint FindProgramInputIndex(const MG_State::GLState::ProgramObject& program, const String& name) {
const Int activeCount = program.GetActiveAttributesCount();
for (Int index = 0; index < activeCount; ++index) {
if (program.GetActiveAttribName(index) == name) {
return static_cast<GLuint>(index);
}
}
return GL_INVALID_INDEX;
}
GLuint FindProgramOutputIndex(const MG_State::GLState::ProgramObject& program, const String& name) {
const Int activeCount = program.GetActiveFragmentOutputCount();
for (Int index = 0; index < activeCount; ++index) {
if (program.GetActiveFragmentOutputName(index) == name) {
return static_cast<GLuint>(index);
}
}
return GL_INVALID_INDEX;
}
GLint GetProgramOutputLocation(const MG_State::GLState::ProgramObject& program, const String& name) {
const Int activeCount = program.GetActiveFragmentOutputCount();
for (Int index = 0; index < activeCount; ++index) {
if (program.GetActiveFragmentOutputName(index) == name) {
return program.GetFragmentOutputLocation(index);
}
}
return -1;
}
GLint GetProgramResourceActiveCount(const MG_State::GLState::ProgramObject& program, GLenum programInterface,
const ProgramResourceCache& cache) {
switch (programInterface) {
case GL_SHADER_STORAGE_BLOCK:
return static_cast<GLint>(cache.storageBlocks.size());
case GL_BUFFER_VARIABLE:
return static_cast<GLint>(cache.bufferVariables.size());
case GL_UNIFORM_BLOCK:
return program.GetActiveUniformBlocksCount();
case GL_UNIFORM:
return static_cast<GLint>(program.GetUniformCount());
case GL_PROGRAM_INPUT:
return program.GetActiveAttributesCount();
case GL_PROGRAM_OUTPUT:
return program.GetActiveFragmentOutputCount();
default:
return 0;
}
}
GLint GetProgramResourceMaxNameLength(const MG_State::GLState::ProgramObject& program, GLenum programInterface,
const ProgramResourceCache& cache) {
switch (programInterface) {
case GL_SHADER_STORAGE_BLOCK: {
SizeT maxLength = 0;
for (const auto& block : cache.storageBlocks) maxLength = std::max(maxLength, block.name.size() + 1);
return static_cast<GLint>(maxLength);
}
case GL_BUFFER_VARIABLE: {
SizeT maxLength = 0;
for (const auto& var : cache.bufferVariables) maxLength = std::max(maxLength, var.name.size() + 1);
return static_cast<GLint>(maxLength);
}
case GL_UNIFORM_BLOCK:
return program.GetActiveUniformBlocksMaxNameLength() + 1;
case GL_UNIFORM:
return program.GetUniformMaxLength() + 1;
case GL_PROGRAM_INPUT:
return program.GetActiveAttributesMaxLength() + 1;
case GL_PROGRAM_OUTPUT: {
SizeT maxLength = 0;
const Int activeCount = program.GetActiveFragmentOutputCount();
for (Int index = 0; index < activeCount; ++index) {
maxLength = std::max(maxLength, program.GetActiveFragmentOutputName(index).size() + 1);
}
return static_cast<GLint>(maxLength);
}
default:
return 0;
}
}
} // namespace
void ClearProgramResourceCaches() {
// Called from EGL teardown while the backend's m_eglStateMutex is held; GL
// calls are serialized in this codebase (contexts migrate threads but never
// run concurrently), so no other thread can be inside the unsynchronized map.
// Live programs in another context self-heal: their entry rebuilds from the
// retained generated SPIR-V on the next resource query.
g_programResourceCaches.clear();
}
GLuint GetShaderStorageBlockIndex(const MG_State::GLState::ProgramObject& program, const String& name) {
auto& cache = GetProgramResourceCache(program);
const auto it = std::find_if(cache.storageBlocks.begin(), cache.storageBlocks.end(),
[&](const StorageBlockResource& block) { return block.name == name; });
return it == cache.storageBlocks.end()
? GL_INVALID_INDEX
: static_cast<GLuint>(std::distance(cache.storageBlocks.begin(), it));
}
GLuint GetShaderStorageBlockBinding(const MG_State::GLState::ProgramObject& program, GLuint blockIndex) {
auto& cache = GetProgramResourceCache(program);
if (blockIndex >= cache.storageBlocks.size()) {
return 0;
}
return cache.storageBlocks[blockIndex].binding;
}
void ClearBufferfi(GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::ClearBufferfi called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::ClearBufferfi called with null GL context");
pVulkanRenderer->ClearBufferfi(buffer, drawbuffer, depth, stencil);
}
void ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat* value) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::ClearBufferfv called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::ClearBufferfv called with null GL context");
pVulkanRenderer->ClearBufferfv(buffer, drawbuffer, value);
}
void ClearBufferuiv(GLenum buffer, GLint drawbuffer, const GLuint* value) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::ClearBufferuiv called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::ClearBufferuiv called with null GL context");
pVulkanRenderer->ClearBufferuiv(buffer, drawbuffer, value);
}
void ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint* value) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::ClearBufferiv called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::ClearBufferiv called with null GL context");
pVulkanRenderer->ClearBufferiv(buffer, drawbuffer, value);
}
void ClearNamedFramebufferfv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
GLint drawbuffer, const GLfloat* value) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::ClearNamedFramebufferfv called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::ClearNamedFramebufferfv called with null GL context");
pVulkanRenderer->ClearNamedFramebufferfv(framebuffer, buffer, drawbuffer, value);
}
void ClearNamedFramebufferfi(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
GLint drawbuffer, GLfloat depth, GLint stencil) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::ClearNamedFramebufferfi called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::ClearNamedFramebufferfi called with null GL context");
pVulkanRenderer->ClearNamedFramebufferfi(framebuffer, buffer, drawbuffer, depth, stencil);
}
void MultiDrawElementsIndirect(GLenum mode, GLenum type, const void* indirect, GLsizei drawcount, GLsizei stride) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::MultiDrawElementsIndirect called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::MultiDrawElementsIndirect called with null GL context");
pVulkanRenderer->MultiDrawElementsIndirect(mode, type, indirect, drawcount, stride);
}
void MultiDrawArraysIndirect(GLenum mode, const void* indirect, GLsizei drawcount, GLsizei stride) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::MultiDrawArraysIndirect called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::MultiDrawArraysIndirect called with null GL context");
if (drawcount <= 0) {
return;
}
// With a bound GL_DRAW_INDIRECT_BUFFER the command parameters may be GPU-written
// (e.g. by a compute shader), so consume them natively on the GPU.
auto drawBuffer = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::DrawIndirect).GetBoundObject();
if (drawBuffer) {
pVulkanRenderer->MultiDrawArraysIndirect(mode, indirect, drawcount, stride);
return;
}
if (stride == 0) {
stride = sizeof(DrawArraysIndirectCommand);
}
if (stride < static_cast<GLsizei>(sizeof(DrawArraysIndirectCommand))) {
MGLOG_E("MultiDrawArraysIndirect skipped: stride %d is smaller than command size %zu",
stride, sizeof(DrawArraysIndirectCommand));
return;
}
// No indirect buffer bound: the pointer refers to client memory.
const auto* commandBytes = ResolveIndirectCommandBytes(
indirect,
static_cast<SizeT>(stride) * static_cast<SizeT>(drawcount - 1) + sizeof(DrawArraysIndirectCommand),
"MultiDrawArraysIndirect");
if (!commandBytes) {
return;
}
for (GLsizei i = 0; i < drawcount; ++i) {
DrawArraysIndirectCommand cmd{};
std::memcpy(&cmd, commandBytes + static_cast<SizeT>(i) * stride, sizeof(cmd));
if (cmd.count == 0 || cmd.instanceCount == 0) {
continue;
}
DrawCmd payload{};
payload.mode = mode;
payload.params.vertexCount = cmd.count;
payload.params.instanceCount = cmd.instanceCount;
payload.params.firstVertex = cmd.first;
payload.params.firstInstance = cmd.baseInstance;
pVulkanRenderer->DrawArrays(payload);
}
}
void MultiDrawElementsIndirectCount(GLenum mode, GLenum type, const void* indirect, GLintptr drawcount,
GLsizei maxdrawcount, GLsizei stride) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::MultiDrawElementsIndirectCount called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::MultiDrawElementsIndirectCount called with null GL context");
pVulkanRenderer->MultiDrawElementsIndirectCount(mode, type, indirect, drawcount, maxdrawcount, stride);
}
void MultiDrawArraysIndirectCount(GLenum mode, const void* indirect, GLintptr drawcount,
GLsizei maxdrawcount, GLsizei stride) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::MultiDrawArraysIndirectCount called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::MultiDrawArraysIndirectCount called with null GL context");
if (maxdrawcount <= 0) {
return;
}
if (stride == 0) {
stride = sizeof(DrawArraysIndirectCommand);
}
if (stride < static_cast<GLsizei>(sizeof(DrawArraysIndirectCommand))) {
MGLOG_E("MultiDrawArraysIndirectCount skipped: stride %d is smaller than command size %zu",
stride, sizeof(DrawArraysIndirectCommand));
return;
}
auto parameterBuffer = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::Parameter).GetBoundObject();
if (!parameterBuffer || drawcount < 0 || static_cast<SizeT>(drawcount) + sizeof(Uint32) > parameterBuffer->GetSize()) {
MGLOG_E("MultiDrawArraysIndirectCount skipped: invalid GL_PARAMETER_BUFFER binding or range");
return;
}
parameterBuffer->SyncPersistentMappedRange();
if (parameterBuffer->MappedData() == nullptr) {
MGLOG_E("MultiDrawArraysIndirectCount skipped: CPU fallback cannot read parameter buffer");
return;
}
Uint32 actualDrawCount = 0;
std::memcpy(&actualDrawCount, parameterBuffer->MappedData() + drawcount, sizeof(actualDrawCount));
actualDrawCount = std::min<Uint32>(actualDrawCount, static_cast<Uint32>(maxdrawcount));
MultiDrawArraysIndirect(mode, indirect, static_cast<GLsizei>(actualDrawCount), stride);
}
void DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type,
const void* indices, GLint basevertex) {
(void)start;
(void)end;
DrawElementsBaseVertex(mode, count, type, indices, basevertex);
}
void DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const void* indices) {
(void)start;
(void)end;
DrawElements(mode, count, type, indices);
}
void DrawElementsInstancedBaseVertexBaseInstance(GLenum mode, GLsizei count, GLenum type, const void* indices,
GLsizei instancecount, GLint basevertex, GLuint baseinstance) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawElementsInstancedBaseVertexBaseInstance called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawElementsInstancedBaseVertexBaseInstance called with null GL context");
DrawIndexedCmd payload{};
payload.mode = mode;
payload.indexBufferView.indexType = type;
payload.indexBufferView.indexByteOffset = reinterpret_cast<SizeT>(indices);
payload.indexBufferView.indexByteSize = count * MG_Util::GetGLTypeSize(type);
payload.params.indexCount = count;
payload.params.instanceCount = instancecount;
payload.params.firstIndex = 0;
payload.params.vertexOffset = basevertex;
payload.params.firstInstance = static_cast<Int32>(baseinstance);
pVulkanRenderer->DrawElements(payload);
}
void DrawElementsInstancedBaseVertex(GLenum mode, GLsizei count, GLenum type, const void* indices,
GLsizei instancecount, GLint basevertex) {
DrawElementsInstancedBaseVertexBaseInstance(mode, count, type, indices, instancecount, basevertex, 0);
}
void DrawElementsInstancedBaseInstance(GLenum mode, GLsizei count, GLenum type, const void* indices,
GLsizei instancecount, GLuint baseinstance) {
DrawElementsInstancedBaseVertexBaseInstance(mode, count, type, indices, instancecount, 0, baseinstance);
}
void DrawElementsInstanced(GLenum mode, GLsizei count, GLenum type, const void* indices, GLsizei instancecount) {
DrawElementsInstancedBaseVertexBaseInstance(mode, count, type, indices, instancecount, 0, 0);
}
void DrawElementsIndirect(GLenum mode, GLenum type, const void* indirect) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawElementsIndirect called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawElementsIndirect called with null GL context");
const SizeT indexSize = MG_Util::GetGLTypeSize(type);
if (indexSize == 0) {
MGLOG_E("DrawElementsIndirect skipped: unsupported index type 0x%x", type);
return;
}
// With a bound GL_DRAW_INDIRECT_BUFFER the command parameters may be GPU-written
// (e.g. by a compute shader), so consume them natively on the GPU.
auto drawBuffer = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::DrawIndirect).GetBoundObject();
if (drawBuffer) {
pVulkanRenderer->MultiDrawElementsIndirect(mode, type, indirect, 1, 0);
return;
}
// No indirect buffer bound: the pointer refers to client memory.
const auto* commandBytes =
ResolveIndirectCommandBytes(indirect, sizeof(DrawElementsIndirectCommand), "DrawElementsIndirect");
if (!commandBytes) {
return;
}
DrawElementsIndirectCommand cmd{};
std::memcpy(&cmd, commandBytes, sizeof(cmd));
if (cmd.count == 0 || cmd.instanceCount == 0) {
return;
}
DrawIndexedCmd payload{};
payload.mode = mode;
payload.indexBufferView.indexType = type;
payload.indexBufferView.indexByteOffset = static_cast<SizeT>(cmd.firstIndex) * indexSize;
payload.indexBufferView.indexByteSize = static_cast<SizeT>(cmd.count) * indexSize;
payload.params.indexCount = cmd.count;
payload.params.instanceCount = cmd.instanceCount;
payload.params.firstIndex = 0;
payload.params.vertexOffset = cmd.baseVertex;
payload.params.firstInstance = static_cast<Int32>(cmd.baseInstance);
pVulkanRenderer->DrawElements(payload);
}
void DrawArraysInstancedBaseInstance(GLenum mode, GLint first, GLsizei count, GLsizei instancecount,
GLuint baseinstance) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawArraysInstancedBaseInstance called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawArraysInstancedBaseInstance called with null GL context");
DrawCmd payload{};
payload.mode = mode;
payload.params.vertexCount = count;
payload.params.instanceCount = instancecount;
payload.params.firstVertex = first;
payload.params.firstInstance = baseinstance;
pVulkanRenderer->DrawArrays(payload);
}
void DrawArraysInstanced(GLenum mode, GLint first, GLsizei count, GLsizei instancecount) {
DrawArraysInstancedBaseInstance(mode, first, count, instancecount, 0);
}
void DrawArraysIndirect(GLenum mode, const void* indirect) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawArraysIndirect called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawArraysIndirect called with null GL context");
// With a bound GL_DRAW_INDIRECT_BUFFER the command parameters may be GPU-written
// (e.g. by a compute shader), so consume them natively on the GPU.
auto drawBuffer = MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::DrawIndirect).GetBoundObject();
if (drawBuffer) {
pVulkanRenderer->MultiDrawArraysIndirect(mode, indirect, 1, 0);
return;
}
// No indirect buffer bound: the pointer refers to client memory.
const auto* commandBytes =
ResolveIndirectCommandBytes(indirect, sizeof(DrawArraysIndirectCommand), "DrawArraysIndirect");
if (!commandBytes) {
return;
}
DrawArraysIndirectCommand cmd{};
std::memcpy(&cmd, commandBytes, sizeof(cmd));
if (cmd.count == 0 || cmd.instanceCount == 0) {
return;
}
DrawCmd payload{};
payload.mode = mode;
payload.params.vertexCount = cmd.count;
payload.params.instanceCount = cmd.instanceCount;
payload.params.firstVertex = cmd.first;
payload.params.firstInstance = cmd.baseInstance;
pVulkanRenderer->DrawArrays(payload);
}
void CopyTexImage2D(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width,
GLsizei height, GLint border) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::CopyTexImage2D called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::CopyTexImage2D called with null GL context");
pVulkanRenderer->CopyTexSubImage2D(target, level, 0, 0, x, y, width, height);
}
void CopyTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width,
GLsizei height) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::CopyTexSubImage2D called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::CopyTexSubImage2D called with null GL context");
pVulkanRenderer->CopyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height);
}
void CopyImageSubData(const SharedPtr<MG_State::GLState::ITextureObject>& srcTexture,
GLenum srcTarget, GLint srcLevel, GLint srcX, GLint srcY, GLint srcZ,
const SharedPtr<MG_State::GLState::ITextureObject>& dstTexture,
GLenum dstTarget, GLint dstLevel, GLint dstX, GLint dstY, GLint dstZ,
GLsizei srcWidth, GLsizei srcHeight, GLsizei srcDepth) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::CopyImageSubData called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::CopyImageSubData called with null GL context");
pVulkanRenderer->CopyImageSubData(srcTexture, srcTarget, srcLevel, srcX, srcY, srcZ,
dstTexture, dstTarget, dstLevel, dstX, dstY, dstZ,
srcWidth, srcHeight, srcDepth);
}
void GenerateMipmap(GLenum target) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::GenerateMipmap called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::GenerateMipmap called with null GL context");
pVulkanRenderer->GenerateMipmap(target);
}
void DispatchCompute(GLuint numGroupsX, GLuint numGroupsY, GLuint numGroupsZ) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DispatchCompute called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DispatchCompute called with null GL context");
pVulkanRenderer->DispatchCompute(numGroupsX, numGroupsY, numGroupsZ);
}
void DispatchComputeIndirect(GLintptr indirect) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DispatchComputeIndirect called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DispatchComputeIndirect called with null GL context");
pVulkanRenderer->DispatchComputeIndirect(indirect);
}
void MemoryBarrier(GLbitfield barriers) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::MemoryBarrier called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::MemoryBarrier called with null GL context");
pVulkanRenderer->MemoryBarrier(barriers);
}
void MemoryBarrierByRegion(GLbitfield barriers) {
MemoryBarrier(barriers);
}
void BindImageTexture(GLuint unit, GLuint texture, GLint level, GLboolean layered, GLint layer, GLenum access,
GLenum format) {
(void)unit;
(void)texture;
(void)level;
(void)layered;
(void)layer;
(void)access;
(void)format;
}
void GetIntegeri_v(GLenum target, GLuint index, GLint* data) {
if (!data) return;
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::GetIntegeri_v called with null VulkanRenderer");
switch (target) {
case GL_MAX_COMPUTE_WORK_GROUP_COUNT:
if (index >= 3) {
*data = 0;
return;
}
*data = static_cast<GLint>(
pVulkanRenderer->GetPhysicalDevice().properties.limits.maxComputeWorkGroupCount[index]);
return;
case GL_MAX_COMPUTE_WORK_GROUP_SIZE:
if (index >= 3) {
*data = 0;
return;
}
*data = static_cast<GLint>(
pVulkanRenderer->GetPhysicalDevice().properties.limits.maxComputeWorkGroupSize[index]);
return;
case GL_SHADER_STORAGE_BUFFER_BINDING: {
auto& point = MG_State::pGLContext->GetBufferBindingPoint(BufferTarget::ShaderStorage, index);
auto& obj = point.GetBoundObject();
*data = obj ? static_cast<GLint>(obj->GetExternalIndex()) : 0;
return;
}
case GL_SHADER_STORAGE_BUFFER_START: {
auto& point = MG_State::pGLContext->GetBufferBindingPoint(BufferTarget::ShaderStorage, index);
*data = static_cast<GLint>(point.GetRange().start);
return;
}
case GL_SHADER_STORAGE_BUFFER_SIZE: {
auto& point = MG_State::pGLContext->GetBufferBindingPoint(BufferTarget::ShaderStorage, index);
auto& obj = point.GetBoundObject();
if (!obj) {
*data = 0;
return;
}
const auto& range = point.GetRange();
const auto start = std::min(range.start, obj->GetSize());
const auto end = std::min(range.end, obj->GetSize());
*data = static_cast<GLint>(end - start);
return;
}
case GL_IMAGE_BINDING_NAME:
case GL_IMAGE_BINDING_LEVEL:
case GL_IMAGE_BINDING_LAYERED:
case GL_IMAGE_BINDING_LAYER:
case GL_IMAGE_BINDING_ACCESS:
case GL_IMAGE_BINDING_FORMAT: {
if (index >= MG_State::GLState::TextureState::MAX_TEXTURE_IMAGE_UNITS) {
*data = 0;
return;
}
auto& imageBinding = MG_State::pGLContext->GetImageTextureBinding(static_cast<Int>(index));
if (target == GL_IMAGE_BINDING_NAME) {
*data = imageBinding.Texture ? static_cast<GLint>(imageBinding.Texture->GetExternalIndex()) : 0;
} else if (target == GL_IMAGE_BINDING_LEVEL) {
*data = imageBinding.Level;
} else if (target == GL_IMAGE_BINDING_LAYERED) {
*data = imageBinding.Layered;
} else if (target == GL_IMAGE_BINDING_LAYER) {
*data = imageBinding.Layer;
} else if (target == GL_IMAGE_BINDING_ACCESS) {
*data = static_cast<GLint>(imageBinding.Access);
} else {
*data = static_cast<GLint>(imageBinding.Format);
}
return;
}
default:
*data = 0;
return;
}
}
void GetInteger64i_v(GLenum target, GLuint index, GLint64* data) {
if (!data) return;
switch (target) {
case GL_SHADER_STORAGE_BUFFER_START: {
auto& point = MG_State::pGLContext->GetBufferBindingPoint(BufferTarget::ShaderStorage, index);
*data = static_cast<GLint64>(point.GetRange().start);
return;
}
case GL_SHADER_STORAGE_BUFFER_SIZE: {
auto& point = MG_State::pGLContext->GetBufferBindingPoint(BufferTarget::ShaderStorage, index);
auto& obj = point.GetBoundObject();
if (!obj) {
*data = 0;
return;
}
const auto& range = point.GetRange();
const auto start = std::min(range.start, obj->GetSize());
const auto end = std::min(range.end, obj->GetSize());
*data = static_cast<GLint64>(end - start);
return;
}
default:
*data = 0;
return;
}
}
void GetProgramiv(GLuint program, GLenum pname, GLint* params) {
if (!params) return;
auto* programObject = TryGetDirectVulkanProgram(program);
if (!programObject) {
params[0] = 0;
return;
}
switch (pname) {
case GL_COMPUTE_WORK_GROUP_SIZE: {
auto& cache = GetProgramResourceCache(*programObject);
params[0] = cache.computeWorkGroupSize[0];
params[1] = cache.computeWorkGroupSize[1];
params[2] = cache.computeWorkGroupSize[2];
return;
}
default:
params[0] = 0;
return;
}
}
void GetProgramInterfaceiv(GLuint program, GLenum programInterface, GLenum pname, GLint* params) {
if (!params) return;
auto* programObject = TryGetDirectVulkanProgram(program);
if (!programObject) return;
auto& cache = GetProgramResourceCache(*programObject);
switch (pname) {
case GL_ACTIVE_RESOURCES:
*params = GetProgramResourceActiveCount(*programObject, programInterface, cache);
return;
case GL_MAX_NAME_LENGTH:
*params = GetProgramResourceMaxNameLength(*programObject, programInterface, cache);
return;
case GL_MAX_NUM_ACTIVE_VARIABLES:
if (programInterface == GL_SHADER_STORAGE_BLOCK) {
SizeT maxCount = 0;
for (const auto& block : cache.storageBlocks) {
maxCount = std::max(maxCount, block.activeVariables.size());
}
*params = static_cast<GLint>(maxCount);
} else if (programInterface == GL_UNIFORM_BLOCK) {
GLint maxCount = 0;
const Int activeBlocks = programObject->GetActiveUniformBlocksCount();
for (Int index = 0; index < activeBlocks; ++index) {
maxCount = std::max(maxCount, programObject->GetUniformBlockActiveUniformCount(index));
}
*params = maxCount;
} else {
*params = 0;
}
return;
default:
*params = 0;
return;
}
}
GLuint GetProgramResourceIndex(GLuint program, GLenum programInterface, const GLchar* name) {
if (!name) return GL_INVALID_INDEX;
auto* programObject = TryGetDirectVulkanProgram(program);
if (!programObject) return GL_INVALID_INDEX;
auto& cache = GetProgramResourceCache(*programObject);
const String resourceName = name;
if (programInterface == GL_SHADER_STORAGE_BLOCK) {
return GetShaderStorageBlockIndex(*programObject, name);
}
if (programInterface == GL_BUFFER_VARIABLE) {
const auto it = std::find_if(cache.bufferVariables.begin(), cache.bufferVariables.end(),
[&](const BufferVariableResource& var) { return var.name == resourceName; });
return it == cache.bufferVariables.end()
? GL_INVALID_INDEX
: static_cast<GLuint>(std::distance(cache.bufferVariables.begin(), it));
}
if (programInterface == GL_UNIFORM_BLOCK) {
return programObject->GetUniformBlockIndex(name);
}
if (programInterface == GL_UNIFORM) {
const Int activeUniformIndex = programObject->GetActiveUniformIndex(resourceName);
return activeUniformIndex >= 0 ? static_cast<GLuint>(activeUniformIndex) : GL_INVALID_INDEX;
}
if (programInterface == GL_PROGRAM_INPUT) {
return FindProgramInputIndex(*programObject, resourceName);
}
if (programInterface == GL_PROGRAM_OUTPUT) {
return FindProgramOutputIndex(*programObject, resourceName);
}
return GL_INVALID_INDEX;
}
void GetProgramResourceName(GLuint program, GLenum programInterface, GLuint index, GLsizei bufSize,
GLsizei* length, GLchar* name) {
auto* programObject = TryGetDirectVulkanProgram(program);
if (!programObject) return;
auto& cache = GetProgramResourceCache(*programObject);
if (programInterface == GL_SHADER_STORAGE_BLOCK && index < cache.storageBlocks.size()) {
CopyResourceName(cache.storageBlocks[index].name, bufSize, length, name);
return;
}
if (programInterface == GL_BUFFER_VARIABLE && index < cache.bufferVariables.size()) {
CopyResourceName(cache.bufferVariables[index].name, bufSize, length, name);
return;
}
if (programInterface == GL_UNIFORM_BLOCK && programObject->IsActiveUniformBlock(index)) {
CopyResourceName(programObject->GetUniformBlockName(index), bufSize, length, name);
return;
}
if (programInterface == GL_UNIFORM && index < programObject->GetUniformCount()) {
CopyResourceName(programObject->GetActiveUniformName(index), bufSize, length, name);
return;
}
if (programInterface == GL_PROGRAM_INPUT && index < static_cast<GLuint>(programObject->GetActiveAttributesCount())) {
CopyResourceName(programObject->GetActiveAttribName(index), bufSize, length, name);
return;
}
if (programInterface == GL_PROGRAM_OUTPUT &&
index < static_cast<GLuint>(programObject->GetActiveFragmentOutputCount())) {
CopyResourceName(programObject->GetActiveFragmentOutputName(index), bufSize, length, name);
return;
}
if (length) *length = 0;
if (name && bufSize > 0) name[0] = '\0';
}
void GetProgramResourceiv(GLuint program, GLenum programInterface, GLuint index, GLsizei propCount,
const GLenum* props, GLsizei bufSize, GLsizei* length, GLint* params) {
auto* programObject = TryGetDirectVulkanProgram(program);
if (!programObject || !props || !params || bufSize <= 0) return;
auto& cache = GetProgramResourceCache(*programObject);
GLsizei written = 0;
auto writeValue = [&](GLint value) {
if (written < bufSize) {
params[written++] = value;
}
};
for (GLsizei propIndex = 0; propIndex < propCount; ++propIndex) {
const GLenum prop = props[propIndex];
if (programInterface == GL_SHADER_STORAGE_BLOCK && index < cache.storageBlocks.size()) {
const auto& block = cache.storageBlocks[index];
switch (prop) {
case GL_NAME_LENGTH:
writeValue(static_cast<GLint>(block.name.size() + 1));
break;
case GL_BUFFER_BINDING:
writeValue(static_cast<GLint>(block.binding));
break;
case GL_BUFFER_DATA_SIZE:
writeValue(block.dataSize);
break;
case GL_NUM_ACTIVE_VARIABLES:
writeValue(static_cast<GLint>(block.activeVariables.size()));
break;
case GL_ACTIVE_VARIABLES:
for (const auto variable : block.activeVariables) writeValue(static_cast<GLint>(variable));
break;
default:
writeValue(0);
break;
}
} else if (programInterface == GL_BUFFER_VARIABLE && index < cache.bufferVariables.size()) {
const auto& var = cache.bufferVariables[index];
switch (prop) {
case GL_NAME_LENGTH:
writeValue(static_cast<GLint>(var.name.size() + 1));
break;
case GL_TYPE:
writeValue(GL_FLOAT);
break;
case GL_ARRAY_SIZE:
writeValue(1);
break;
case GL_OFFSET:
writeValue(var.offset);
break;
case GL_BLOCK_INDEX:
writeValue(static_cast<GLint>(var.blockIndex));
break;
case GL_ARRAY_STRIDE:
case GL_MATRIX_STRIDE:
case GL_TOP_LEVEL_ARRAY_SIZE:
case GL_TOP_LEVEL_ARRAY_STRIDE:
case GL_IS_ROW_MAJOR:
writeValue(0);
break;
default:
writeValue(0);
break;
}
} else if (programInterface == GL_UNIFORM_BLOCK &&
programObject->IsActiveUniformBlock(index)) {
const auto activeVariables = GetUniformBlockActiveVariables(*programObject, index);
switch (prop) {
case GL_NAME_LENGTH:
writeValue(static_cast<GLint>(programObject->GetUniformBlockName(index).size() + 1));
break;
case GL_BUFFER_BINDING:
writeValue(static_cast<GLint>(programObject->GetUniformBlockBinding(index)));
break;
case GL_BUFFER_DATA_SIZE:
writeValue(static_cast<GLint>(programObject->GetUBOSizeAt(index)));
break;
case GL_NUM_ACTIVE_VARIABLES:
writeValue(static_cast<GLint>(activeVariables.size()));
break;
case GL_ACTIVE_VARIABLES:
for (const GLuint variableIndex : activeVariables) {
writeValue(static_cast<GLint>(variableIndex));
}
break;
case GL_REFERENCED_BY_VERTEX_SHADER:
writeValue(programObject->IsUniformBlockReferencedByStage(index, EShLangVertex) ? GL_TRUE
: GL_FALSE);
break;
case GL_REFERENCED_BY_FRAGMENT_SHADER:
writeValue(programObject->IsUniformBlockReferencedByStage(index, EShLangFragment) ? GL_TRUE
: GL_FALSE);
break;
case GL_REFERENCED_BY_COMPUTE_SHADER:
writeValue(programObject->IsUniformBlockReferencedByStage(index, EShLangCompute) ? GL_TRUE
: GL_FALSE);
break;
case GL_REFERENCED_BY_GEOMETRY_SHADER:
case GL_REFERENCED_BY_TESS_CONTROL_SHADER:
case GL_REFERENCED_BY_TESS_EVALUATION_SHADER:
writeValue(GL_FALSE);
break;
default:
writeValue(0);
break;
}
} else if (programInterface == GL_UNIFORM && index < programObject->GetUniformCount()) {
const auto& uniformName = programObject->GetActiveUniformName(index);
const GLint location = programObject->GetUniformLocation(uniformName);
switch (prop) {
case GL_NAME_LENGTH:
writeValue(static_cast<GLint>(uniformName.size() + 1));
break;
case GL_TYPE:
writeValue(static_cast<GLint>(programObject->GetActiveUniformType(index)));
break;
case GL_ARRAY_SIZE:
writeValue(programObject->GetActiveUniformArraySize(index));
break;
case GL_BLOCK_INDEX:
writeValue(programObject->GetActiveUniformBlockIndex(index));
break;
case GL_LOCATION:
writeValue(location);
break;
case GL_OFFSET:
writeValue(location >= 0 && programObject->IsValidUniformLocation(location)
? static_cast<GLint>(programObject->GetUniformOffset(location))
: 0);
break;
case GL_ARRAY_STRIDE:
case GL_MATRIX_STRIDE:
case GL_IS_ROW_MAJOR:
case GL_TOP_LEVEL_ARRAY_SIZE:
case GL_TOP_LEVEL_ARRAY_STRIDE:
case GL_REFERENCED_BY_VERTEX_SHADER:
case GL_REFERENCED_BY_FRAGMENT_SHADER:
case GL_REFERENCED_BY_COMPUTE_SHADER:
case GL_REFERENCED_BY_GEOMETRY_SHADER:
case GL_REFERENCED_BY_TESS_CONTROL_SHADER:
case GL_REFERENCED_BY_TESS_EVALUATION_SHADER:
writeValue(0);
break;
default:
writeValue(0);
break;
}
} else if (programInterface == GL_PROGRAM_INPUT &&
index < static_cast<GLuint>(programObject->GetActiveAttributesCount())) {
const auto& resourceName = programObject->GetActiveAttribName(index);
switch (prop) {
case GL_NAME_LENGTH:
writeValue(static_cast<GLint>(resourceName.size() + 1));
break;
case GL_TYPE:
writeValue(static_cast<GLint>(programObject->GetActiveAttribType(index)));
break;
case GL_ARRAY_SIZE:
writeValue(programObject->GetActiveAttribArraySize(index));
break;
case GL_LOCATION:
writeValue(programObject->GetAttributeLocation(resourceName));
break;
case GL_REFERENCED_BY_VERTEX_SHADER:
writeValue(GL_TRUE);
break;
case GL_REFERENCED_BY_FRAGMENT_SHADER:
case GL_REFERENCED_BY_COMPUTE_SHADER:
case GL_REFERENCED_BY_GEOMETRY_SHADER:
case GL_REFERENCED_BY_TESS_CONTROL_SHADER:
case GL_REFERENCED_BY_TESS_EVALUATION_SHADER:
case GL_IS_PER_PATCH:
case GL_LOCATION_INDEX:
writeValue(0);
break;
default:
writeValue(0);
break;
}
} else if (programInterface == GL_PROGRAM_OUTPUT &&
index < static_cast<GLuint>(programObject->GetActiveFragmentOutputCount())) {
const auto& resourceName = programObject->GetActiveFragmentOutputName(index);
switch (prop) {
case GL_NAME_LENGTH:
writeValue(static_cast<GLint>(resourceName.size() + 1));
break;
case GL_TYPE:
writeValue(static_cast<GLint>(programObject->GetFragmentOutputType(index)));
break;
case GL_ARRAY_SIZE:
writeValue(programObject->GetActiveFragmentOutputArraySize(index));
break;
case GL_LOCATION:
writeValue(programObject->GetFragmentOutputLocation(index));
break;
case GL_LOCATION_INDEX:
writeValue(0);
break;
case GL_REFERENCED_BY_FRAGMENT_SHADER:
writeValue(GL_TRUE);
break;
case GL_REFERENCED_BY_VERTEX_SHADER:
case GL_REFERENCED_BY_COMPUTE_SHADER:
case GL_REFERENCED_BY_GEOMETRY_SHADER:
case GL_REFERENCED_BY_TESS_CONTROL_SHADER:
case GL_REFERENCED_BY_TESS_EVALUATION_SHADER:
case GL_IS_PER_PATCH:
writeValue(0);
break;
default:
writeValue(0);
break;
}
} else {
writeValue(0);
}
}
if (length) *length = written;
}
GLint GetProgramResourceLocation(GLuint program, GLenum programInterface, const GLchar* name) {
auto* programObject = TryGetDirectVulkanProgram(program);
if (!programObject || !name) return -1;
if (programInterface == GL_UNIFORM) {
return programObject->GetUniformLocation(name);
}
if (programInterface == GL_PROGRAM_INPUT) {
return programObject->GetAttributeLocation(name);
}
if (programInterface == GL_PROGRAM_OUTPUT) {
return GetProgramOutputLocation(*programObject, name);
}
return -1;
}
GLint GetProgramResourceLocationIndex(GLuint program, GLenum programInterface, const GLchar* name) {
auto* programObject = TryGetDirectVulkanProgram(program);
if (!programObject || !name) return -1;
if (programInterface == GL_PROGRAM_OUTPUT) {
return GetProgramOutputLocation(*programObject, name) >= 0 ? 0 : -1;
}
return -1;
}
void ShaderStorageBlockBinding(GLuint program, GLuint storageBlockIndex, GLuint storageBlockBinding) {
auto* programObject = TryGetDirectVulkanProgram(program);
if (!programObject) return;
auto& cache = GetProgramResourceCache(*programObject);
const Int maxBindings = pActiveBackendObject
? pActiveBackendObject->GetDynamicParameters().MaxShaderStorageBufferBindings
: 0;
if (storageBlockBinding >= static_cast<GLuint>(maxBindings)) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidValue,
MakeUnique<GenericErrorInfo>("DirectVulkan", __func__, "Shader storage binding is out of range."));
return;
}
if (storageBlockIndex >= cache.storageBlocks.size()) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidValue,
MakeUnique<GenericErrorInfo>("DirectVulkan", __func__, "Shader storage block index is not active."));
return;
}
cache.storageBlocks[storageBlockIndex].binding = storageBlockBinding;
}
void ReadPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::ReadPixels called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::ReadPixels called with null GL context");
pVulkanRenderer->ReadPixels(x, y, width, height, format, type, pixels);
}
void GetTexImage(GLenum target, GLint level, GLenum format, GLenum type, GLvoid* pixels) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::GetTexImage called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::GetTexImage called with null GL context");
pVulkanRenderer->GetTexImage(target, level, format, type, pixels);
}
void GetTextureImage(const SharedPtr<MG_State::GLState::ITextureObject>& texture, TextureUploadTarget uploadTarget,
GLint level, GLenum format, GLenum type, GLsizei bufSize, GLvoid* pixels) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::GetTextureImage called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::GetTextureImage called with null GL context");
pVulkanRenderer->GetTextureImage(texture, uploadTarget, level, format, type, bufSize, pixels);
}
void Clear(GLbitfield mask) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::Clear called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::Clear called with null GL context");
pVulkanRenderer->Clear(mask);
}
// Vulkan has no LINE_LOOP topology; rewrite the draw as an indexed LINE_STRIP
// whose synthesized index list revisits the first vertex at the end.
static void DrawLineLoopAsIndexedStrip(const Vector<Uint32>& closedIndices, GLint basevertex) {
DrawIndexedCmd payload{};
payload.mode = GL_LINE_STRIP;
payload.indexBufferView.indexType = GL_UNSIGNED_INT;
payload.indexBufferView.indexByteOffset = reinterpret_cast<SizeT>(closedIndices.data());
payload.indexBufferView.indexByteSize = closedIndices.size() * sizeof(Uint32);
payload.indexBufferView.forceClientMemory = true;
payload.params.indexCount = static_cast<Uint32>(closedIndices.size());
payload.params.instanceCount = 1;
payload.params.vertexOffset = basevertex;
pVulkanRenderer->DrawElements(payload);
}
// Resolve a DrawElements index list (bound element-array buffer or client
// memory) into uint32 values with the loop-closing first index appended.
static Bool BuildClosedLineLoopIndices(GLsizei count, GLenum type, const void* indices,
Vector<Uint32>& outIndices) {
const SizeT indexSize = MG_Util::GetGLTypeSize(type);
if (indexSize == 0 || count < 2) {
return false;
}
const Uint8* indexBytes = nullptr;
const auto& vao = *MG_State::pGLContext->GetBoundVertexArray();
const auto& indexBufferShared = vao.GetIndexBufferBindingSlot().GetBoundObject();
if (indexBufferShared != nullptr) {
const SizeT offset = reinterpret_cast<SizeT>(indices);
const SizeT bufferSize = indexBufferShared->GetSize();
if (indexBufferShared->MappedData() == nullptr || offset > bufferSize ||
static_cast<SizeT>(count) * indexSize > bufferSize - offset) {
return false;
}
indexBufferShared->SyncPersistentMappedRange();
indexBytes = indexBufferShared->MappedData() + offset;
} else {
indexBytes = static_cast<const Uint8*>(indices);
if (indexBytes == nullptr) {
return false;
}
}
outIndices.resize(static_cast<SizeT>(count) + 1);
for (GLsizei i = 0; i < count; ++i) {
switch (indexSize) {
case 1: outIndices[i] = indexBytes[i]; break;
case 2: outIndices[i] = reinterpret_cast<const Uint16*>(indexBytes)[i]; break;
default: outIndices[i] = reinterpret_cast<const Uint32*>(indexBytes)[i]; break;
}
}
outIndices[count] = outIndices[0];
return true;
}
void DrawArrays(GLenum mode, GLint first, GLsizei count) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawArrays called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawArrays called with null GL context");
if (mode == GL_LINE_LOOP) {
if (count < 2) {
return;
}
Vector<Uint32> closedIndices(static_cast<SizeT>(count) + 1);
for (GLsizei i = 0; i < count; ++i) {
closedIndices[i] = static_cast<Uint32>(first + i);
}
closedIndices[count] = static_cast<Uint32>(first);
DrawLineLoopAsIndexedStrip(closedIndices, 0);
return;
}
DrawCmd payload{};
payload.mode = mode;
payload.params.firstVertex = first;
payload.params.vertexCount = count;
pVulkanRenderer->DrawArrays(payload);
}
void DrawElements(GLenum mode, GLsizei count, GLenum type, const void* indices) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawElements called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawElements called with null GL context");
if (mode == GL_LINE_LOOP) {
Vector<Uint32> closedIndices;
if (BuildClosedLineLoopIndices(count, type, indices, closedIndices)) {
DrawLineLoopAsIndexedStrip(closedIndices, 0);
}
return;
}
DrawIndexedCmd payload{};
payload.mode = mode;
payload.indexBufferView.indexType = type;
payload.indexBufferView.indexByteOffset = reinterpret_cast<SizeT>(indices);
payload.indexBufferView.indexByteSize = count * MG_Util::GetGLTypeSize(type);
payload.params.indexCount = count;
payload.params.instanceCount = 1;
pVulkanRenderer->DrawElements(payload);
}
void MultiDrawArrays(GLenum mode, const GLint* first, const GLsizei* count, GLsizei drawcount) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::MultiDrawArrays called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::MultiDrawArrays called with null GL context");
if (drawcount <= 0) {
return;
}
MultiDrawCmd payload{};
payload.mode = mode;
// TODO: allocate draw cmd buf elsewhere
static Vector<DrawCmdParam> params;
params.clear();
params.resize(drawcount);
for (GLsizei i = 0; i < drawcount; ++i) {
auto& param = params[i];
param.vertexCount = count[i] > 0 ? static_cast<Uint32>(count[i]) : 0;
param.instanceCount = 1;
param.firstVertex = first[i] > 0 ? static_cast<Uint32>(first[i]) : 0;
param.firstInstance = 0;
}
payload.drawCount = static_cast<Uint32>(drawcount);
payload.pParams = params.data();
pVulkanRenderer->MultiDrawArrays(payload);
}
void MultiDrawElements(GLenum mode, const GLsizei* count, GLenum type, const GLvoid* const* indices,
GLsizei drawcount) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::MultiDrawElements called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::MultiDrawElements called with null GL context");
// Vector<DrawElementCmd> cmds;
// cmds.reserve(static_cast<SizeT>(drawcount));
// for (GLsizei i = 0; i < drawcount; ++i) {
// if (count[i] == 0) {
// continue;
// }
//
// DrawElementCmd payload{};
// payload.mode = mode;
// payload.firstVertex = 0;
// payload.indexCount = count[i];
// payload.indexType = type;
// payload.indexByteOffset = reinterpret_cast<SizeT>(indices[i]);
// cmds.push_back(payload);
// }
//
// if (cmds.empty()) {
// return;
// }
// pVulkanRenderer->MultiDrawElements(cmds);
}
void DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type, const GLvoid* indices, GLint basevertex) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::DrawElementsBaseVertex called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawElementsBaseVertex called with null GL context");
if (mode == GL_LINE_LOOP) {
Vector<Uint32> closedIndices;
if (BuildClosedLineLoopIndices(count, type, indices, closedIndices)) {
DrawLineLoopAsIndexedStrip(closedIndices, basevertex);
}
return;
}
DrawIndexedCmd payload{};
payload.mode = mode;
payload.indexBufferView.indexType = type;
payload.indexBufferView.indexByteOffset = reinterpret_cast<SizeT>(indices);
payload.indexBufferView.indexByteSize = count * MG_Util::GetGLTypeSize(type);
payload.params.indexCount = count;
payload.params.instanceCount = 1;
payload.params.firstIndex = 0;
payload.params.vertexOffset = basevertex;
payload.params.firstInstance = 0;
pVulkanRenderer->DrawElements(payload);
}
void MultiDrawElementsBaseVertex(GLenum mode, const GLsizei* count, GLenum type, const GLvoid* const* indices,
GLsizei drawcount, const GLint* basevertex) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::MultiDrawElements called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::MultiDrawElements called with null GL context");
MultiDrawIndexedCmd payload{};
payload.mode = mode;
payload.indexBufferView.indexType = type;
// TODO: allocate draw cmd buf elsewhere
static Vector<DrawIndexedCmdParam> params;
params.clear();
params.resize(drawcount);
for (GLsizei i = 0; i < drawcount; ++i) {
if (count[i] == 0) {
continue;
}
// TODO: this index view needs a redesign, now there's a lotta redundant uploads
payload.indexBufferView.indexByteOffset = 0;
payload.indexBufferView.indexByteSize =
std::max(reinterpret_cast<SizeT>(indices[i]) + count[i] * MG_Util::GetGLTypeSize(type),
payload.indexBufferView.indexByteSize);
auto& param = params[i];
param.indexCount = count[i];
param.instanceCount = 1;
param.firstIndex = reinterpret_cast<SizeT>(indices[i]) / MG_Util::GetGLTypeSize(type);
param.vertexOffset = basevertex[i];
param.firstInstance = 0;
}
payload.drawCount = drawcount;
payload.pParams = params.data();
pVulkanRenderer->MultiDrawElements(payload);
}
void BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1,
GLint dstY1, GLbitfield mask, GLenum filter) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::BlitFramebuffer called with null VulkanRenderer");
MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::BlitFramebuffer called with null GL context");
pVulkanRenderer->BlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter);
}
void BlitNamedFramebuffer(const SharedPtr<MG_State::GLState::FramebufferObject>& readFramebuffer,
const SharedPtr<MG_State::GLState::FramebufferObject>& drawFramebuffer,
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0,
GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter) {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::BlitNamedFramebuffer called with null VulkanRenderer");
pVulkanRenderer->BlitNamedFramebuffer(readFramebuffer, drawFramebuffer, srcX0, srcY0, srcX1, srcY1, dstX0,
dstY0, dstX1, dstY1, mask, filter);
}
namespace {
// Backend fence handle: the queue-submission index captured at fence
// creation (see VulkanRenderer::GetSyncPointSubmitIndex). The fence is
// signaled once that submission's VkFence has been observed signaled,
// so completion tracks the GPU itself rather than the frame-count
// inference; MC 1.21.5's fence-paced ring buffers depend on this to
// recycle their space instead of growing without bound.
struct VulkanSyncObject {
Uint64 submitIndex = 0;
// Renderer generation the index was issued under (see
// g_rendererGeneration). A stale generation reports the fence
// signaled: renderer destruction waits for device idle, so the
// old renderer's GPU work is long complete, and the index must
// not be compared against the new renderer's restarted counter.
Uint64 rendererGeneration = 0;
};
} // namespace
BackendSyncHandle FenceSync() {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::FenceSync called with null VulkanRenderer");
return new VulkanSyncObject{pVulkanRenderer->GetSyncPointSubmitIndex(), GetRendererGeneration()};
}
GLenum ClientWaitSync(BackendSyncHandle handle, GLbitfield flags, GLuint64 timeout) {
const auto* sync = static_cast<VulkanSyncObject*>(handle);
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::ClientWaitSync called with null VulkanRenderer");
if (sync == nullptr || sync->rendererGeneration != GetRendererGeneration()) {
return GL_ALREADY_SIGNALED;
}
if (pVulkanRenderer->IsSubmitIndexComplete(sync->submitIndex)) {
return GL_ALREADY_SIGNALED;
}
// GL_SYNC_FLUSH_COMMANDS_BIT: flush regardless of timeout, so a
// zero-timeout poll loop makes progress across calls - but only when
// the sync's batch is still unsubmitted; flushing for an already
// submitted fence cannot advance it and would split the frame's
// render pass on every poll.
if ((flags & GL_SYNC_FLUSH_COMMANDS_BIT) != 0) {
pVulkanRenderer->FlushForSyncPoint(sync->submitIndex);
}
if (timeout == 0) {
return pVulkanRenderer->IsSubmitIndexComplete(sync->submitIndex) ? GL_ALREADY_SIGNALED
: GL_TIMEOUT_EXPIRED;
}
// Blocking wait: flush even without the flush bit - the sync's batch
// can only be submitted from this thread, so waiting on an unflushed
// fence would otherwise burn the full timeout with no chance of
// success.
return pVulkanRenderer->WaitForSubmitIndex(sync->submitIndex, timeout, /*flushIfPending=*/true)
? GL_CONDITION_SATISFIED
: GL_TIMEOUT_EXPIRED;
}
void WaitSync(BackendSyncHandle handle, GLbitfield flags, GLuint64 timeout) {
// Server-side waits are implicit: the single graphics queue executes
// submissions in order, so later GPU work already observes everything
// recorded before the fence.
(void)handle;
(void)flags;
(void)timeout;
}
void DeleteSync(BackendSyncHandle handle) {
delete static_cast<VulkanSyncObject*>(handle);
}
Bool GetSyncStatus(BackendSyncHandle handle) {
const auto* sync = static_cast<VulkanSyncObject*>(handle);
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::GetSyncStatus called with null VulkanRenderer");
if (sync == nullptr || sync->rendererGeneration != GetRendererGeneration()) {
return true;
}
// Pure status read (glGetSynciv must not flush).
return pVulkanRenderer->IsSubmitIndexComplete(sync->submitIndex);
}
namespace {
// Backend timer-query handle: a TIME_ELAPSED span holds a begin and an
// end timestamp record; a GL_TIMESTAMP one-shot holds only `end`. The
// records are shared (SharedPtr) with the owning pool's pending list,
// so deleting the query while results are still in flight is safe.
struct VulkanTimerQuery {
SharedPtr<VkTimerQueryManager::TimestampRecord> begin;
SharedPtr<VkTimerQueryManager::TimestampRecord> end;
// Renderer generation the records were written under (see
// g_rendererGeneration). A stale generation resolves as available
// with a final zero result: the records' pool indices and frame
// serials refer to a destroyed renderer and must never be handed
// to the current one. DeleteBackendQuery only frees the wrapper
// (and, via the SharedPtrs, the records), never pool slots, so
// stale queries are always safe to delete.
Uint64 rendererGeneration = 0;
};
} // namespace
Bool IsTimerQuerySupported() {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::IsTimerQuerySupported called with null VulkanRenderer");
return pVulkanRenderer->IsTimerQuerySupported();
}
BackendQueryHandle BeginTimeElapsedQuery() {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::BeginTimeElapsedQuery called with null VulkanRenderer");
if (!pVulkanRenderer->IsTimerQuerySupported()) {
return nullptr;
}
auto begin = pVulkanRenderer->WriteTimerQueryTimestamp();
if (!begin) {
// Pool exhausted this frame; the frontend falls back on a null handle.
return nullptr;
}
auto* query = new VulkanTimerQuery{};
query->begin = std::move(begin);
query->rendererGeneration = GetRendererGeneration();
return query;
}
void EndTimeElapsedQuery(BackendQueryHandle handle) {
auto* query = static_cast<VulkanTimerQuery*>(handle);
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::EndTimeElapsedQuery called with null VulkanRenderer");
if (query == nullptr) {
return;
}
if (query->rendererGeneration != GetRendererGeneration()) {
// The span began under a renderer that has since been destroyed;
// never write into the new renderer's pools on its behalf. The
// query resolves as available with a zero result.
return;
}
// May be null on pool exhaustion; the query then reads back as 0.
query->end = pVulkanRenderer->WriteTimerQueryTimestamp();
}
BackendQueryHandle QueryCounterTimestamp() {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::QueryCounterTimestamp called with null VulkanRenderer");
if (!pVulkanRenderer->IsTimerQuerySupported()) {
return nullptr;
}
auto record = pVulkanRenderer->WriteTimerQueryTimestamp();
if (!record) {
return nullptr;
}
auto* query = new VulkanTimerQuery{};
query->end = std::move(record);
query->rendererGeneration = GetRendererGeneration();
return query;
}
Bool IsQueryResultAvailable(BackendQueryHandle handle) {
auto* query = static_cast<VulkanTimerQuery*>(handle);
// Degraded/stale handles report available; GetQueryResult64 then
// resolves them with a final zero result.
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::IsQueryResultAvailable called with null VulkanRenderer");
if (query == nullptr || query->rendererGeneration != GetRendererGeneration()) {
return true;
}
if (query->begin && !pVulkanRenderer->IsTimerQueryResultReady(*query->begin)) {
return false;
}
if (query->end && !pVulkanRenderer->IsTimerQueryResultReady(*query->end)) {
return false;
}
return true;
}
Bool GetQueryResult64(BackendQueryHandle handle, Bool wait, Uint64* outNanoseconds) {
*outNanoseconds = 0;
auto* query = static_cast<VulkanTimerQuery*>(handle);
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::GetQueryResult64 called with null VulkanRenderer");
if (query == nullptr || query->rendererGeneration != GetRendererGeneration()) {
// The records belong to a destroyed renderer: no real value can
// ever be produced, so resolve with a final 0.
return true;
}
// With wait, mirrors ClientWaitSync: a query ended this frame cannot
// complete until Present submits the commands, so the wait refuses to
// block on the current unsubmitted serial. Returning false keeps the
// handle alive in the frontend; the query stays readable once a later
// Present submits the frame.
const auto ensureReady = [&](VkTimerQueryManager::TimestampRecord& record) {
return wait ? pVulkanRenderer->WaitForTimerQueryResult(record)
: pVulkanRenderer->IsTimerQueryResultReady(record);
};
if (query->begin && query->end) {
if (!ensureReady(*query->begin) || !ensureReady(*query->end)) {
return false;
}
*outNanoseconds = pVulkanRenderer->GetTimerQueryElapsedNs(*query->begin, *query->end);
return true;
}
if (query->end) {
if (!ensureReady(*query->end)) {
return false;
}
*outNanoseconds = pVulkanRenderer->GetTimerQueryTimestampNs(*query->end);
return true;
}
// TIME_ELAPSED span that never got its end timestamp (pool
// exhaustion): nothing further can arrive, resolve with a final 0.
return true;
}
void DeleteBackendQuery(BackendQueryHandle handle) {
delete static_cast<VulkanTimerQuery*>(handle);
}
Int64 GetGpuTimestampNs() {
// Vulkan cannot synchronously sample the GPU clock: timestamps only
// exist as vkCmdWriteTimestamp results read back later, and
// VK_EXT_calibrated_timestamps is not wired up. Returning 0 tells the
// frontend GL_TIMESTAMP getter to fall back.
return 0;
}
void Present() {
MOBILEGL_ASSERT(pVulkanRenderer, "DirectVulkan::Present called with null VulkanRenderer");
pVulkanRenderer->Present();
}
} // namespace MobileGL::MG_Backend::DirectVulkan
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