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Swap chains, part 2 (#94)

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This commit is contained in:
Kai Ninomiya
2017-07-27 18:30:57 -07:00
committed by GitHub
parent 3818e18c5c
commit c16a67ae52
49 changed files with 771 additions and 435 deletions
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25
examples/RenderToTexture.cpp
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@@ -29,11 +29,11 @@ nxt::TextureView renderTargetView;
nxt::Sampler samplerPost;
nxt::Queue queue;
nxt::SwapChain swapchain;
nxt::RenderPipeline pipeline;
nxt::RenderPipeline pipelinePost;
nxt::BindGroup bindGroup;
nxt::RenderPass renderpass;
nxt::Framebuffer framebuffer;
void initBuffers() {
static const float vertexData[12] = {
@@ -81,14 +81,6 @@ void initRenderPass() {
// subpass 1
.SubpassSetColorAttachment(1, 0, 1) // -> back buffer
.GetResult();
framebuffer = device.CreateFramebufferBuilder()
.SetRenderPass(renderpass)
// attachment 0 -> render target
.SetAttachment(0, renderTargetView)
// attachment 1 -> back buffer
// (implicit) // TODO(kainino@chromium.org): use the texture provided by WSI
.SetDimensions(640, 480)
.GetResult();
}
void initPipeline() {
@@ -174,6 +166,8 @@ void init() {
device = CreateCppNXTDevice();
queue = device.CreateQueueBuilder().GetResult();
swapchain = GetSwapChain(device);
swapchain.Configure(nxt::TextureFormat::R8G8B8A8Unorm, 640, 480);
initBuffers();
initTextures();
@@ -183,6 +177,15 @@ void init() {
}
void frame() {
nxt::Texture backbuffer = swapchain.GetNextTexture();
auto backbufferView = backbuffer.CreateTextureViewBuilder().GetResult();
auto framebuffer = device.CreateFramebufferBuilder()
.SetRenderPass(renderpass)
.SetDimensions(640, 480)
.SetAttachment(0, renderTargetView)
.SetAttachment(1, backbufferView)
.GetResult();
static const uint32_t vertexBufferOffsets[1] = {0};
nxt::CommandBuffer commands = device.CreateCommandBufferBuilder()
.BeginRenderPass(renderpass, framebuffer)
@@ -204,7 +207,9 @@ void frame() {
.GetResult();
queue.Submit(1, &commands);
DoSwapBuffers();
backbuffer.TransitionUsage(nxt::TextureUsageBit::Present);
swapchain.Present(backbuffer);
DoFlush();
}
int main(int argc, const char* argv[]) {