init

Chapter01/04_GLSLang/CMakeLists.txt

@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.19)
+project(Chapter01)
+include(../../CMake/CommonMacros.txt)
+SETUP_APP(Ch01_04_GLSLang "Chapter 01")
+
+target_include_directories(Ch01_04_GLSLang PUBLIC ${CMAKE_SOURCE_DIR})
+target_link_libraries(Ch01_04_GLSLang SharedUtils)

Chapter01/04_GLSLang/src/main.cpp

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+#include "glslang/Include/glslang_c_interface.h"
+#include "glslang/Public/resource_limits_c.h"
+#include "vulkan/VulkanUtils.h"
+#include <cstdio>
+#include <shared/HelpersGLFW.h>
+#include <shared/Utils.h>
+#include <sys/types.h>
+#include <vector>
+
+void saveSpirvBinaryFile(const char *filename, const uint8_t *code,
+                         size_t size) {
+  FILE *f = fopen(filename, "wb");
+  fwrite(code, sizeof(uint8_t), size, f);
+  fclose(f);
+}
+
+void testShaderCompilation(const char *sourceFilename,
+                           const char *destFilename) {
+  std::string shaderSource = readShaderFile(sourceFilename);
+  std::vector<uint8_t> spirv;
+
+  lvk::Result res = lvk::compileShader(
+      vkShaderStageFromFileName(sourceFilename), shaderSource.c_str(), &spirv,
+      glslang_default_resource());
+
+  saveSpirvBinaryFile(destFilename, spirv.data(), spirv.size());
+}
+
+int main(int argc, char *argv[]) {
+  glslang_initialize_process();
+
+  testShaderCompilation("Chapter01/04_GLSLang/src/main.vert",
+                        ".cache/04_GLSLang.vert.bin");
+  testShaderCompilation("Chapter01/04_GLSLang/src/main.frag",
+                        ".cache/04_GLSLang.frag.bin");
+
+  glslang_finalize_process();
+  return 0;
+}

Chapter01/04_GLSLang/src/main.frag

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+//
+#version 450
+
+layout(location = 0) in vec3 fragColor;
+layout(location = 1) in vec2 texCoord;
+
+layout(location = 0) out vec4 outColor;
+
+void main() {
+	outColor = vec4(texCoord.x, texCoord.y, 1.0, 1.0);
+}

Chapter01/04_GLSLang/src/main.vert

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+#version 450
+
+layout(location = 0) out vec3 fragColor;
+layout(location = 1) out vec2 texCoord;
+
+vec2 positions[3] = vec2[](
+    vec2(0.0, -0.5),
+    vec2(0.5, 0.5),
+    vec2(-0.5, 0.5)
+);
+
+vec3 colors[3] = vec3[](
+    vec3(1.0, 0.0, 0.0),
+    vec3(0.0, 1.0, 0.0),
+    vec3(0.0, 0.0, 1.0)
+);
+
+vec2 texcoords[3] = vec2[](
+	vec2(1.0f, 0.0f),
+	vec2(0.0f, 0.0f),
+	vec2(0.0f, 1.0f)
+);
+
+void main() {
+	gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
+	fragColor = colors[gl_VertexIndex];
+	texCoord  = texcoords[gl_VertexIndex];
+}