130 lines
4.0 KiB
C++
130 lines
4.0 KiB
C++
// Copyright 2017 The NXT Authors
|
|
//
|
|
// 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
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "SampleUtils.h"
|
|
|
|
#include "utils/NXTHelpers.h"
|
|
#include "utils/SystemUtils.h"
|
|
|
|
#include <vector>
|
|
|
|
nxt::Device device;
|
|
|
|
nxt::Buffer vertexBuffer;
|
|
nxt::Buffer instanceBuffer;
|
|
|
|
nxt::Queue queue;
|
|
nxt::SwapChain swapchain;
|
|
nxt::TextureView depthStencilView;
|
|
nxt::RenderPipeline pipeline;
|
|
nxt::RenderPass renderpass;
|
|
|
|
void initBuffers() {
|
|
static const float vertexData[12] = {
|
|
0.0f, 0.1f, 0.0f, 1.0f,
|
|
-0.1f, -0.1f, 0.0f, 1.0f,
|
|
0.1f, -0.1f, 0.0f, 1.0f,
|
|
};
|
|
vertexBuffer = utils::CreateFrozenBufferFromData(device, vertexData, sizeof(vertexData), nxt::BufferUsageBit::Vertex);
|
|
|
|
static const float instanceData[8] = {
|
|
-0.5f, -0.5f,
|
|
-0.5f, 0.5f,
|
|
0.5f, -0.5f,
|
|
0.5f, 0.5f,
|
|
};
|
|
instanceBuffer = utils::CreateFrozenBufferFromData(device, instanceData, sizeof(instanceData), nxt::BufferUsageBit::Vertex);
|
|
}
|
|
|
|
void init() {
|
|
device = CreateCppNXTDevice();
|
|
|
|
queue = device.CreateQueueBuilder().GetResult();
|
|
swapchain = GetSwapChain(device);
|
|
swapchain.Configure(nxt::TextureFormat::R8G8B8A8Unorm, nxt::TextureUsageBit::OutputAttachment, 640, 480);
|
|
|
|
initBuffers();
|
|
|
|
nxt::ShaderModule vsModule = utils::CreateShaderModule(device, nxt::ShaderStage::Vertex, R"(
|
|
#version 450
|
|
layout(location = 0) in vec4 pos;
|
|
layout(location = 1) in vec2 instance;
|
|
void main() {
|
|
gl_Position = vec4(pos.xy + instance, pos.zw);
|
|
})"
|
|
);
|
|
|
|
nxt::ShaderModule fsModule = utils::CreateShaderModule(device, nxt::ShaderStage::Fragment, R"(
|
|
#version 450
|
|
out vec4 fragColor;
|
|
void main() {
|
|
fragColor = vec4(1.0, 0.0, 0.0, 1.0);
|
|
})"
|
|
);
|
|
|
|
auto inputState = device.CreateInputStateBuilder()
|
|
.SetAttribute(0, 0, nxt::VertexFormat::FloatR32G32B32A32, 0)
|
|
.SetInput(0, 4 * sizeof(float), nxt::InputStepMode::Vertex)
|
|
.SetAttribute(1, 1, nxt::VertexFormat::FloatR32G32, 0)
|
|
.SetInput(1, 2 * sizeof(float), nxt::InputStepMode::Instance)
|
|
.GetResult();
|
|
|
|
renderpass = CreateDefaultRenderPass(device);
|
|
depthStencilView = CreateDefaultDepthStencilView(device);
|
|
|
|
pipeline = device.CreateRenderPipelineBuilder()
|
|
.SetSubpass(renderpass, 0)
|
|
.SetStage(nxt::ShaderStage::Vertex, vsModule, "main")
|
|
.SetStage(nxt::ShaderStage::Fragment, fsModule, "main")
|
|
.SetInputState(inputState)
|
|
.GetResult();
|
|
}
|
|
|
|
void frame() {
|
|
nxt::Texture backbuffer;
|
|
nxt::Framebuffer framebuffer;
|
|
GetNextFramebuffer(device, renderpass, swapchain, depthStencilView, &backbuffer, &framebuffer);
|
|
|
|
static const uint32_t vertexBufferOffsets[1] = {0};
|
|
nxt::CommandBuffer commands = device.CreateCommandBufferBuilder()
|
|
.BeginRenderPass(renderpass, framebuffer)
|
|
.BeginRenderSubpass()
|
|
.SetRenderPipeline(pipeline)
|
|
.SetVertexBuffers(0, 1, &vertexBuffer, vertexBufferOffsets)
|
|
.SetVertexBuffers(1, 1, &instanceBuffer, vertexBufferOffsets)
|
|
.DrawArrays(3, 4, 0, 0)
|
|
.EndRenderSubpass()
|
|
.EndRenderPass()
|
|
.GetResult();
|
|
|
|
queue.Submit(1, &commands);
|
|
backbuffer.TransitionUsage(nxt::TextureUsageBit::Present);
|
|
swapchain.Present(backbuffer);
|
|
DoFlush();
|
|
}
|
|
|
|
int main(int argc, const char* argv[]) {
|
|
if (!InitSample(argc, argv)) {
|
|
return 1;
|
|
}
|
|
init();
|
|
|
|
while (!ShouldQuit()) {
|
|
frame();
|
|
utils::USleep(16000);
|
|
}
|
|
|
|
// TODO release stuff
|
|
}
|