Simulate the OpenGL Triangle Pipeline

Write a C program that simulates the OpenGL pipeline for a single triangle.

Requirements:

• Define three vertices in model space: A=(-0.5,-0.5,0), B=(0.5,-0.5,0), C=(0,0.5,0)
• Define vertex colors: red, green, blue
• Simulate Vertex Specification: print the VBO data (position + color for each vertex)
• Simulate Vertex Shader: apply a simple orthographic projection (just pass through x, y; set z=0, w=1)
• Simulate Primitive Assembly: print that 3 vertices form 1 triangle with mode GL_TRIANGLES
• Simulate Rasterization: compute the bounding box, count how many fragments would be generated
• Simulate Fragment Shader: for the centroid of the triangle, compute the average of the three vertex colors
• Simulate Per-Sample Operations: print that depth test is disabled, blending is disabled, and the color is written
• Print a pipeline stage summary with the data flowing through each stage
• Include a note about what VAO, VBO, and EBO stand for