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MobileGL/MobileGL/MG_Backend/DirectVulkan/DirectVulkan.h
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// MobileGL - MobileGL/MG_Backend/DirectVulkan/DirectVulkan.h
// 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
#pragma once
#include <Includes.h>
#include <MG_Backend/BackendObject.h>
#include "Renderer/VulkanRenderer.h"
namespace MobileGL::MG_Backend::DirectVulkan {
extern UniquePtr<VulkanRenderer>& pVulkanRenderer;
// Generation of the live VulkanRenderer instance, mirroring DirectGLES's
// g_syncContextGeneration. BackendObject_DirectVulkan bumps it wherever
// pVulkanRenderer is reset or recreated; fence and timer-query handles
// stamped with an older generation are stale and resolve as signaled /
// available with zero results instead of dereferencing the destroyed
// renderer's frame serials and query-pool slots.
Uint64 GetRendererGeneration();
void BumpRendererGeneration();
// Drops every cached program-resource reflection entry (CPU-side strings/vectors
// only, no Vulkan handles). Called at EGL teardown next to the renderer reset;
// safe because GL calls are serialized in this codebase, and any still-live
// program rebuilds its entry from the retained generated SPIR-V on demand.
void ClearProgramResourceCaches();
void ClearBufferfi(GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
void ClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat* value);
void ClearBufferuiv(GLenum buffer, GLint drawbuffer, const GLuint* value);
void ClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint* value);
void ClearNamedFramebufferfv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
GLint drawbuffer, const GLfloat* value);
void ClearNamedFramebufferiv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
GLint drawbuffer, const GLint* value);
void ClearNamedFramebufferuiv(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
GLint drawbuffer, const GLuint* value);
void ClearNamedFramebufferfi(const SharedPtr<MG_State::GLState::FramebufferObject>& framebuffer, GLenum buffer,
GLint drawbuffer, GLfloat depth, GLint stencil);
void Clear(GLbitfield mask);
void DrawElements(GLenum mode, GLsizei count, GLenum type, const void* indices);
void DrawArrays(GLenum mode, GLint first, GLsizei count);
void DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type, const GLvoid* indices, GLint basevertex);
void MultiDrawArrays(GLenum mode, const GLint* first, const GLsizei* count, GLsizei drawcount);
void MultiDrawElements(GLenum mode, const GLsizei* count, GLenum type, const GLvoid* const* indices,
GLsizei drawcount);
void MultiDrawElementsBaseVertex(GLenum mode, const GLsizei* count, GLenum type, const GLvoid* const* indices,
GLsizei drawcount, const GLint* basevertex);
void MultiDrawElementsIndirect(GLenum mode, GLenum type, const void* indirect, GLsizei drawcount, GLsizei stride);
void MultiDrawArraysIndirect(GLenum mode, const void* indirect, GLsizei drawcount, GLsizei stride);
void MultiDrawElementsIndirectCount(GLenum mode, GLenum type, const void* indirect, GLintptr drawcount,
GLsizei maxdrawcount, GLsizei stride);
void MultiDrawArraysIndirectCount(GLenum mode, const void* indirect, GLintptr drawcount,
GLsizei maxdrawcount, GLsizei stride);
void DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type,
const void* indices, GLint basevertex);
void DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const void* indices);
void DrawElementsInstancedBaseVertexBaseInstance(GLenum mode, GLsizei count, GLenum type, const void* indices,
GLsizei instancecount, GLint basevertex, GLuint baseinstance);
void DrawElementsInstancedBaseVertex(GLenum mode, GLsizei count, GLenum type, const void* indices,
GLsizei instancecount, GLint basevertex);
void DrawElementsInstancedBaseInstance(GLenum mode, GLsizei count, GLenum type, const void* indices,
GLsizei instancecount, GLuint baseinstance);
void DrawElementsInstanced(GLenum mode, GLsizei count, GLenum type, const void* indices, GLsizei instancecount);
void DrawElementsIndirect(GLenum mode, GLenum type, const void* indirect);
void DrawArraysInstancedBaseInstance(GLenum mode, GLint first, GLsizei count, GLsizei instancecount,
GLuint baseinstance);
void DrawArraysInstanced(GLenum mode, GLint first, GLsizei count, GLsizei instancecount);
void DrawArraysIndirect(GLenum mode, const void* indirect);
void BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1,
GLint dstY1, GLbitfield mask, GLenum 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);
void CopyTexImage2D(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width,
GLsizei height, GLint border);
void CopyTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width,
GLsizei height);
void CopyImageSubData(const CopyImageEndpoint& src,
GLenum srcTarget, GLint srcLevel, GLint srcX, GLint srcY, GLint srcZ,
const CopyImageEndpoint& dst,
GLenum dstTarget, GLint dstLevel, GLint dstX, GLint dstY, GLint dstZ,
GLsizei srcWidth, GLsizei srcHeight, GLsizei srcDepth);
void GenerateMipmap(GLenum target);
void DispatchCompute(GLuint numGroupsX, GLuint numGroupsY, GLuint numGroupsZ);
void DispatchComputeIndirect(GLintptr indirect);
void MemoryBarrier(GLbitfield barriers);
void MemoryBarrierByRegion(GLbitfield barriers);
void BindImageTexture(GLuint unit, GLuint texture, GLint level, GLboolean layered, GLint layer, GLenum access,
GLenum format);
void GetIntegeri_v(GLenum target, GLuint index, GLint* data);
void GetInteger64i_v(GLenum target, GLuint index, GLint64* data);
void GetProgramiv(GLuint program, GLenum pname, GLint* params);
void ShaderStorageBlockBinding(GLuint program, const GLchar* storageBlockName, GLuint storageBlockBinding);
void ReadPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels);
void GetTexImage(GLenum target, GLint level, GLenum format, GLenum type, GLvoid* pixels);
void GetTextureImage(const SharedPtr<MG_State::GLState::ITextureObject>& texture, TextureUploadTarget uploadTarget,
GLint level, GLenum format, GLenum type, GLsizei bufSize, GLvoid* pixels);
// GL fence sync objects, mapped onto the renderer's frame-serial busy
// tracking: a fence captures the frame serial current at creation and is
// signaled once every command recorded under that serial has completed on
// the GPU.
BackendSyncHandle FenceSync();
GLenum ClientWaitSync(BackendSyncHandle sync, GLbitfield flags, GLuint64 timeout);
void WaitSync(BackendSyncHandle sync, GLbitfield flags, GLuint64 timeout);
void DeleteSync(BackendSyncHandle sync);
Bool GetSyncStatus(BackendSyncHandle sync);
// GPU timer queries (GL_TIME_ELAPSED spans and GL_TIMESTAMP one-shots),
// backed by per-frame VkQueryPool timestamp slots. All hooks degrade
// gracefully: null handles when the renderer is absent, the device lacks
// timestamp support, or the frame's pool is exhausted.
// Dynamic support check (GLFunctionsTable::IsTimerQuerySupported): true
// only while a live renderer exists whose device can actually time.
Bool IsTimerQuerySupported();
BackendQueryHandle BeginTimeElapsedQuery();
BackendQueryHandle BeginXfbPrimitivesQuery(Bool generated);
void EndXfbPrimitivesQuery(BackendQueryHandle query);
BackendQueryHandle BeginOcclusionQuery();
void EndOcclusionQuery(BackendQueryHandle query);
void EndTimeElapsedQuery(BackendQueryHandle query);
BackendQueryHandle QueryCounterTimestamp();
Bool IsQueryResultAvailable(BackendQueryHandle query);
// Returns true when a final value was produced (outNanoseconds set; the
// frontend may cache it and release the handle), false when the result
// cannot be obtained yet (e.g. a wait refused because the records' frame
// serial is the current unsubmitted frame) - the handle then stays
// readable later.
Bool GetQueryResult64(BackendQueryHandle query, Bool wait, Uint64* outNanoseconds);
void DeleteBackendQuery(BackendQueryHandle query);
// Always 0: Vulkan cannot synchronously sample the GPU clock (timestamps
// only exist as vkCmdWriteTimestamp results); the frontend falls back.
Int64 GetGpuTimestampNs();
void Present();
} // namespace MobileGL::MG_Backend::DirectVulkan