Initial commit of all the NXT integration.

More like squashed history, contributors were: - Kai Ninomiya - Corentin Wallez
2025-12-14 07:36:15 +00:00 · 2017-04-20 14:38:20 -04:00
commit f07e3bd4c9
134 changed files with 24658 additions and 0 deletions
--- a/examples/HelloIndices.cpp
+++ b/examples/HelloIndices.cpp
@@ -0,0 +1,117 @@
+// 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 "Utils.h"
+
+#include <unistd.h>
+#include <vector>
+
+nxt::Device device;
+
+nxt::Buffer indexBuffer;
+nxt::Buffer vertexBuffer;
+
+nxt::Queue queue;
+nxt::Pipeline pipeline;
+
+void initBuffers() {
+    static const uint32_t indexData[3] = {
+        0, 1, 2,
+    };
+    indexBuffer = device.CreateBufferBuilder()
+        .SetAllowedUsage(nxt::BufferUsageBit::Mapped | nxt::BufferUsageBit::Index)
+        .SetInitialUsage(nxt::BufferUsageBit::Mapped)
+        .SetSize(sizeof(indexData))
+        .GetResult();
+    indexBuffer.SetSubData(0, sizeof(indexData) / sizeof(uint32_t), indexData);
+    indexBuffer.FreezeUsage(nxt::BufferUsageBit::Index);
+
+    static const float vertexData[12] = {
+        0.0f, 0.5f, 0.0f, 1.0f,
+        -0.5f, -0.5f, 0.0f, 1.0f,
+        0.5f, -0.5f, 0.0f, 1.0f,
+    };
+    vertexBuffer = device.CreateBufferBuilder()
+        .SetAllowedUsage(nxt::BufferUsageBit::Mapped | nxt::BufferUsageBit::Vertex)
+        .SetInitialUsage(nxt::BufferUsageBit::Mapped)
+        .SetSize(sizeof(vertexData))
+        .GetResult();
+    vertexBuffer.SetSubData(0, sizeof(vertexData) / sizeof(uint32_t),
+            reinterpret_cast<const uint32_t*>(vertexData));
+    vertexBuffer.FreezeUsage(nxt::BufferUsageBit::Vertex);
+}
+
+void init() {
+    nxtProcTable procs;
+    GetProcTableAndDevice(&procs, &device);
+    nxtSetProcs(&procs);
+
+    queue = device.CreateQueueBuilder().GetResult();
+
+    initBuffers();
+
+    nxt::ShaderModule vsModule = CreateShaderModule(device, nxt::ShaderStage::Vertex, R"(
+        #version 450
+        layout(location = 0) in vec4 pos;
+        void main() {
+            gl_Position = pos;
+        })"
+    );
+
+    nxt::ShaderModule fsModule = 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)
+        .GetResult();
+
+    pipeline = device.CreatePipelineBuilder()
+        .SetStage(nxt::ShaderStage::Vertex, vsModule, "main")
+        .SetStage(nxt::ShaderStage::Fragment, fsModule, "main")
+        .SetInputState(inputState)
+        .GetResult();
+}
+
+void frame() {
+    static const uint32_t vertexBufferOffsets[1] = {0};
+    nxt::CommandBuffer commands = device.CreateCommandBufferBuilder()
+        .SetPipeline(pipeline)
+        .SetVertexBuffers(0, 1, &vertexBuffer, vertexBufferOffsets)
+        .SetIndexBuffer(indexBuffer, 0, nxt::IndexFormat::Uint32)
+        .DrawElements(3, 1, 0, 0)
+        .GetResult();
+
+    queue.Submit(1, &commands);
+    SwapBuffers();
+}
+
+int main(int argc, const char* argv[]) {
+    if (!InitUtils(argc, argv)) {
+        return 1;
+    }
+    init();
+
+    while (!ShouldQuit()) {
+        frame();
+        usleep(16000);
+    }
+
+    // TODO release stuff
+}