- program.LoadShader(
- GL_VERTEX_SHADER,
- "#version 330 core\n"
- "layout(location = 0) in vec3 vertexPosition_modelspace;\n"
- "uniform mat4 MVP;\n"
- "void main() {\n"
- "vec4 v = vec4(vertexPosition_modelspace, 1);\n"
- "gl_Position = MVP * v;\n"
- "}\n"
- );
- program.LoadShader(
- GL_FRAGMENT_SHADER,
- "#version 330 core\n"
- "out vec3 color;\n"
- "void main() {\n"
- "color = vec3(1, 1, 1);\n"
- "}\n"
- );
- program.Link();
- if (!program.Linked()) {
- program.Log(std::cerr);
- throw std::runtime_error("link program");
- }
-
- GLuint VertexArrayID;
- glGenVertexArrays(1, &VertexArrayID);
- glBindVertexArray(VertexArrayID);
-
- glGenBuffers(1, &vtx_buf);
- glBindBuffer(GL_ARRAY_BUFFER, vtx_buf);
- glBufferData(GL_ARRAY_BUFFER, sizeof(vtx_coords), vtx_coords, GL_STATIC_DRAW);
-
- glm::mat4 projection = glm::perspective(
- 45.0f, // FOV in degrees
- 1.0f, // aspect ratio
- 0.1f, // near clip
- 100.0f // far clip
- );
- glm::mat4 view = glm::lookAt(
- glm::vec3(0, 0, 0), // observer
- glm::vec3(0, 0, -1), // target
- glm::vec3(0, 1, 0) // up
- );
- glm::mat4 model(1.0f); // identity: no transformation
- mvp = projection * view * model;
-
- mvp_handle = program.UniformLocation("MVP");