From ca92d8c90f7103db6d7cae4cef49b278d804b474 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Wed, 20 Dec 2017 20:55:05 +0100
Subject: Create shader using c++ code

---
 src/main.cpp | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 src/main.cpp

(limited to 'src/main.cpp')

diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..fe48ddf
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,88 @@
+#include <cstdio>
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+#include <glm/glm.hpp>
+#include "../include/RenderBackend/OpenGL/VertexShader.hpp"
+#include "../include/RenderBackend/OpenGL/PixelShader.hpp"
+#include "../include/RenderBackend/OpenGL/DeviceMemory.hpp"
+
+using namespace amalgine;
+using namespace std;
+
+int main()
+{
+    if(!glfwInit())
+    {
+        fprintf(stderr, "Failed to initialize GLFW\n");
+        return -1;
+    }
+
+    glfwWindowHint(GLFW_SAMPLES, 4);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 5);
+    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+    glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
+
+    GLFWwindow *window = glfwCreateWindow(1920, 1080, "Amalgine", nullptr, nullptr);
+    if(!window)
+    {
+        fprintf(stderr, "Failed to open GLFW window\n");
+        glfwTerminate();
+        return -1;
+    }
+
+    glfwMakeContextCurrent(window);
+    glewExperimental = true;
+    if(glewInit() != GLEW_OK)
+    {
+        fprintf(stderr, "Failed to initialize GLEW\n");
+        glfwTerminate();
+        return -1;
+    }
+
+    glfwSetInputMode(window, GLFW_STICKY_KEYS, GL_TRUE);
+    
+    
+    f32 verticesRaw[] = 
+    {
+        0.0f, 0.5f,
+        0.5f, -0.5f,
+        -0.5f, -0.5f
+    };
+    DataView<f32> vertices(verticesRaw, 6);
+    DeviceMemory triangle;
+    triangle.copyStatic(vertices);
+    
+    VertexShader vertexShader;
+    ShaderInputVec2 inputPosition = vertexShader.defineInputVec2("position");
+    
+    vertexShader.defineMain([&inputPosition]()
+    {
+        return ShaderVec4(inputPosition, 0.0f, 1.0f);
+    });
+    
+    PixelShader pixelShader;
+    ShaderOutputVec4 outColor = pixelShader.defineOutputVec4("outColor");
+    
+    pixelShader.defineMain([&outColor]()
+    {
+        outColor = ShaderVec4(1.0f, 1.0f, 1.0f, 1.0f);
+    });
+    
+    string vertexShaderSource = vertexShader.build();
+    printf("Vertex shader source:\n%s", vertexShaderSource.c_str());
+    string pixelShaderSource = pixelShader.build();
+    printf("Pixel shader source:\n%s", pixelShaderSource.c_str());
+
+    while(!glfwWindowShouldClose(window))
+    {
+        if(glfwGetKey(window, GLFW_KEY_ESCAPE) != GLFW_PRESS)
+            glfwSetWindowShouldClose(window, GL_TRUE);
+
+        glfwSwapBuffers(window);
+        glfwPollEvents();
+    }
+
+    return 0;
+}
-- 
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