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[Feat] (MG_Backend/DirectVulkan): implement simple DrawElements path to put buffer to the test

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swung0x48
2026-02-17 09:47:13 +08:00
parent dfe91e96a5
commit 7d4ebfc305
3 changed files with 150 additions and 4 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
+102
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@@ -143,6 +143,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
VkPipelineMultisampleStateCreateInfo ms{VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO};
ms.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
VkPipelineDepthStencilStateCreateInfo depthStencil{VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO};
depthStencil.depthTestEnable = VK_FALSE;
depthStencil.depthWriteEnable = VK_FALSE;
depthStencil.depthCompareOp = VK_COMPARE_OP_ALWAYS;
depthStencil.depthBoundsTestEnable = VK_FALSE;
depthStencil.stencilTestEnable = VK_FALSE;
VkPipelineColorBlendAttachmentState colorAttach{};
colorAttach.colorWriteMask =
VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
@@ -160,6 +167,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
gpi.pViewportState = &vpci;
gpi.pRasterizationState = &raster;
gpi.pMultisampleState = &ms;
gpi.pDepthStencilState = &depthStencil;
gpi.pColorBlendState = &blend;
gpi.pDynamicState = &dynamicState;
gpi.layout = m_pipelineLayout;
@@ -186,6 +194,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
CreateSurface();
PickPhysicalDevice();
CreateLogicalDeviceAndQueues();
CreateAllocator();
CreateCommandPool();
@@ -207,6 +216,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
VK_VERIFY(vkDeviceWaitIdle(m_device));
m_programFactory.reset();
m_indexBuffer.Destroy();
m_frameContext.Destroy(m_device, m_commandPool);
@@ -225,6 +235,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
m_commandPool = VK_NULL_HANDLE;
}
DestroyAllocator();
if (m_device != VK_NULL_HANDLE) {
vkDestroyDevice(m_device, nullptr);
m_device = VK_NULL_HANDLE;
@@ -462,6 +474,71 @@ namespace MobileGL::MG_Backend::DirectVulkan {
vkCmdDraw(commandBuffer, static_cast<Uint32>(count), 1, static_cast<Uint32>(first), 0);
}
void VulkanRenderer::DrawElements(GLenum type, GLsizei count, const void* indexData, SizeT indexDataSizeBytes) {
EnsureFrameRecordingStarted();
auto& frame = m_frameContext.GetCurrent();
if (!frame.isCommandRecording || !m_isMainRenderPassActive) {
MGLOG_W("DrawElements skipped: frame recording was not started");
return;
}
VkIndexType vkIndexType = VK_INDEX_TYPE_MAX_ENUM;
switch (type) {
case GL_UNSIGNED_SHORT:
vkIndexType = VK_INDEX_TYPE_UINT16;
break;
case GL_UNSIGNED_INT:
vkIndexType = VK_INDEX_TYPE_UINT32;
break;
default:
MGLOG_W("DrawElements skipped: index type %u is not supported yet", type);
return;
}
MOBILEGL_ASSERT(indexData != nullptr, "DrawElements requires non-null indexData");
MOBILEGL_ASSERT(indexDataSizeBytes > 0, "DrawElements requires non-zero index data size");
if (!m_indexBuffer.IsValid() || m_indexBuffer.GetSize() < indexDataSizeBytes) {
m_indexBuffer.Destroy();
const Bool created = m_indexBuffer.Create(
m_allocator, static_cast<VkDeviceSize>(indexDataSizeBytes),
VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
VMA_MEMORY_USAGE_AUTO,
VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT);
if (!created) {
MGLOG_E("DrawElements skipped: failed to create index buffer");
return;
}
}
if (!m_indexBuffer.Upload(indexData, static_cast<VkDeviceSize>(indexDataSizeBytes), 0)) {
MGLOG_E("DrawElements skipped: failed to upload index data");
return;
}
VkCommandBuffer& commandBuffer = frame.commandBuffer;
const auto swapchainExtent = m_swapchainObject.GetExtent();
vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, m_pipeline);
VkViewport viewport{};
viewport.x = 0.0f;
viewport.y = 0.0f;
viewport.width = static_cast<float>(swapchainExtent.width);
viewport.height = static_cast<float>(swapchainExtent.height);
viewport.minDepth = 0.0f;
viewport.maxDepth = 1.0f;
vkCmdSetViewport(commandBuffer, 0, 1, &viewport);
VkRect2D scissor{};
scissor.offset = {0, 0};
scissor.extent = swapchainExtent;
vkCmdSetScissor(commandBuffer, 0, 1, &scissor);
vkCmdBindIndexBuffer(commandBuffer, m_indexBuffer.GetHandle(), 0, vkIndexType);
vkCmdDrawIndexed(commandBuffer, static_cast<Uint32>(count), 1, 0, 0, 0);
}
void VulkanRenderer::Render() {
// Route test rendering through the same frame-start logic used by draw calls,
// so pending glClear() state can be consumed consistently.
@@ -878,6 +955,31 @@ namespace MobileGL::MG_Backend::DirectVulkan {
MGLOG_I("Queues got successfully.");
}
void VulkanRenderer::CreateAllocator() {
MOBILEGL_ASSERT(m_instance != VK_NULL_HANDLE, "CreateAllocator requires valid VkInstance");
MOBILEGL_ASSERT(m_physicalDevice.handle != VK_NULL_HANDLE, "CreateAllocator requires valid physical device");
MOBILEGL_ASSERT(m_device != VK_NULL_HANDLE, "CreateAllocator requires valid VkDevice");
if (m_allocator != nullptr) {
return;
}
VmaAllocatorCreateInfo allocatorInfo{};
allocatorInfo.instance = m_instance;
allocatorInfo.physicalDevice = m_physicalDevice.handle;
allocatorInfo.device = m_device;
allocatorInfo.vulkanApiVersion = VK_API_VERSION_1_0;
VK_VERIFY(vmaCreateAllocator(&allocatorInfo, &m_allocator), "vmaCreateAllocator");
}
void VulkanRenderer::DestroyAllocator() {
if (m_allocator != nullptr) {
vmaDestroyAllocator(m_allocator);
m_allocator = nullptr;
}
}
void VulkanRenderer::CreateSwapchain() {
m_swapchainObject.Create(m_device, m_physicalDevice.handle, m_surface,
static_cast<Uint32>(m_physicalDevice.queueFamilies.graphicsFamily),