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/*
* Copyright (c) 2025 The Khronos Group Inc.
* Copyright (c) 2025 Valve Corporation
* Copyright (c) 2025 LunarG, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
#include "../framework/layer_validation_tests.h"
#include "../framework/pipeline_helper.h"
#include "../framework/descriptor_helper.h"
class PositiveGpuAVMesh : public GpuAVMesh {};
void GpuAVMesh::InitBasicMeshAndTask(bool safe_mode) {
SetTargetApiVersion(VK_API_VERSION_1_3);
AddRequiredExtensions(VK_EXT_MESH_SHADER_EXTENSION_NAME);
AddRequiredFeature(vkt::Feature::meshShader);
// While not "required", it highly supported together
AddRequiredFeature(vkt::Feature::taskShader);
RETURN_IF_SKIP(InitGpuAvFramework({}, safe_mode));
RETURN_IF_SKIP(InitState());
}
TEST_F(PositiveGpuAVMesh, BasicMesh) {
RETURN_IF_SKIP(InitBasicMeshAndTask(false));
InitRenderTarget();
VkShaderObj ms(*m_device, kMeshPassthroughGlsl, VK_SHADER_STAGE_MESH_BIT_EXT, SPV_ENV_VULKAN_1_2);
VkShaderObj fs(*m_device, kFragmentMinimalGlsl, VK_SHADER_STAGE_FRAGMENT_BIT, SPV_ENV_VULKAN_1_2);
CreatePipelineHelper pipe(*this);
pipe.shader_stages_ = {ms.GetStageCreateInfo(), fs.GetStageCreateInfo()};
pipe.CreateGraphicsPipeline();
m_command_buffer.Begin();
m_command_buffer.BeginRenderPass(m_renderPassBeginInfo);
vk::CmdBindPipeline(m_command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipe);
vk::CmdDrawMeshTasksEXT(m_command_buffer, 1, 1, 1);
m_command_buffer.EndRenderPass();
m_command_buffer.End();
m_default_queue->SubmitAndWait(m_command_buffer);
}
TEST_F(PositiveGpuAVMesh, MultipleSetMeshOutput) {
RETURN_IF_SKIP(InitBasicMeshAndTask(false));
InitRenderTarget();
const char *mesh_source = R"glsl(
#version 450
#extension GL_EXT_mesh_shader : require
layout(triangles, max_vertices = 3, max_primitives = 1) out;
layout(set = 0, binding = 0) buffer SSBO {
uint index;
uint v;
uint p;
};
void main() {
if (index == 1) {
SetMeshOutputsEXT(500, 500);
} else if (index == 2) {
SetMeshOutputsEXT(p, v);
} else {
SetMeshOutputsEXT(v, p); // what we will pick
}
gl_MeshVerticesEXT[0].gl_Position = vec4(0);
gl_PrimitiveTriangleIndicesEXT[0] = uvec3(0, 1, 2);
}
)glsl";
VkShaderObj ms(*m_device, mesh_source, VK_SHADER_STAGE_MESH_BIT_EXT, SPV_ENV_VULKAN_1_2);
VkShaderObj fs(*m_device, kFragmentMinimalGlsl, VK_SHADER_STAGE_FRAGMENT_BIT, SPV_ENV_VULKAN_1_2);
OneOffDescriptorSet descriptor_set(m_device, {{0, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1, VK_SHADER_STAGE_ALL, nullptr}});
vkt::PipelineLayout pipeline_layout(*m_device, {&descriptor_set.layout_});
vkt::Buffer buffer(*m_device, 64, VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, kHostVisibleMemProps);
uint32_t *buffer_ptr = (uint32_t *)buffer.Memory().Map();
buffer_ptr[0] = 0;
buffer_ptr[1] = 3;
buffer_ptr[2] = 1;
descriptor_set.WriteDescriptorBufferInfo(0, buffer, 0, VK_WHOLE_SIZE, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER);
descriptor_set.UpdateDescriptorSets();
CreatePipelineHelper pipe(*this);
pipe.gp_ci_.layout = pipeline_layout;
pipe.shader_stages_ = {ms.GetStageCreateInfo(), fs.GetStageCreateInfo()};
pipe.CreateGraphicsPipeline();
m_command_buffer.Begin();
m_command_buffer.BeginRenderPass(m_renderPassBeginInfo);
vk::CmdBindDescriptorSets(m_command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layout, 0, 1, &descriptor_set.set_, 0,
nullptr);
vk::CmdBindPipeline(m_command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipe);
vk::CmdDrawMeshTasksEXT(m_command_buffer, 1, 1, 1);
m_command_buffer.EndRenderPass();
m_command_buffer.End();
m_default_queue->SubmitAndWait(m_command_buffer);
}
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