base setup for osx in place

2017-01-14 18:30:19 +00:00
commit 13d8e6e563
18 changed files with 1143 additions and 0 deletions
--- a/engine/app.cpp
+++ b/engine/app.cpp
@@ -0,0 +1,102 @@
+#include "pch.h"
+#include "app.hpp"
+
+App App::I; // singleton
+
+void App::create()
+{
+    width = 800;
+    height = 600;
+}
+
+void App::init()
+{
+    static const char* shader_v =
+        "#version 150\n"
+        "uniform mat4 mvp;"
+        "in vec4 pos;"
+        "in vec2 uvs;"
+        "out vec2 uv;"
+        "void main(){"
+        "   gl_Position = mvp * pos;"
+        "   uv = uvs;"
+        "}";
+    static const char* shader_f =
+        "#version 150\n"
+        "uniform sampler2D tex;"
+        "in vec2 uv;"
+        "out vec4 frag;"
+        "void main(){"
+        "   frag = texture(tex, uv, 0.0);"
+        "}";
+    static const char* shader_color_v =
+        "#version 150\n"
+        "uniform mat4 mvp;"
+        "in vec4 pos;"
+        "void main(){"
+        "   gl_Position = mvp * pos;"
+        "}";
+    static const char* shader_color_f =
+        "#version 150\n"
+        "uniform vec4 col;"
+        "out vec4 frag;"
+        "void main(){"
+        "   frag = col;"
+        "}";
+    shader.create(shader_v, shader_f);
+    shader_color.create(shader_color_v, shader_color_f);
+    plane.create<15>(.5f, .5f);
+    longPlane.create<1>(.3, .05f);
+    circle.create<6>(.5f);
+    if (!tex.load("data/image.png"))
+        printf("error loading image\n");
+    
+    glViewport(0, 0, width, height);
+    glEnable(GL_TEXTURE);
+    glDisable(GL_DEPTH_TEST);
+    glPointSize(5);
+    glLineWidth(15);
+    
+    int n;
+    glGetIntegerv(GL_NUM_EXTENSIONS, &n);
+    for (int i = 0; i < n; i++)
+    {
+        const unsigned char* s = glGetStringi(GL_EXTENSIONS, i);
+        printf("GL ext %03d: %s\n", i, s);
+    }
+    printf("GL version: %s\n", glGetString(GL_VERSION));
+    printf("GL vendor: %s\n", glGetString(GL_VENDOR));
+    printf("GL renderer: %s\n", glGetString(GL_RENDERER));
+    
+    GLfloat width_range[2];
+    glGetFloatv(GL_LINE_WIDTH_RANGE, width_range);
+    printf("GL line range: %f - %f\n", width_range[0], width_range[1]);
+}
+
+void App::update(float dt)
+{
+    static float theta = 0;
+    theta += M_PI * 0.5f * dt;
+    float red = fabsf(sinf(theta));
+    
+    glm::mat4 proj = glm::perspective(glm::radians(85.f), 1.f, .1f, 100.f);
+    glm::mat4 model = glm::translate(glm::vec3(0, 0, 0));
+    glm::mat4 view = glm::lookAt(glm::vec3(sinf(theta), 0, 1), glm::vec3(0, 0, 0), glm::vec3(0, 1, 0));
+    auto mvp = proj * view * model;
+    
+    glClearColor(red, 0, 0, 1);
+    glClear(GL_COLOR_BUFFER_BIT);
+    shader.use();
+    shader.u_mat4("mvp", glm::mat4());
+    shader.u_int("tex", 0);
+    
+    glActiveTexture(GL_TEXTURE0);
+    tex.bind();
+    //circle.draw_fill();
+    tex.unbind();
+    
+    shader_color.use();
+    shader_color.u_mat4("mvp", glm::mat4());
+    shader_color.u_vec4("col", {1, 1, 1, 1});
+    circle.draw_stroke();
+}