Opengl 2.0 Upd – Updated

uniform sampler2D myTexture; void main()

CPU (Application) │ ├── Vertex Data (positions, normals, colors, texcoords) │ ▼ Vertex Shader (GLSL) - Transform position (modelview → projection) - Compute per-vertex lighting, texture coordinates - Output: gl_Position, varying variables │ ▼ Primitive Assembly & Clipping │ ▼ Rasterization (Interpolates varying variables across fragments) │ ▼ Fragment Shader (GLSL) - Sample textures - Compute per-pixel lighting, effects - Output: gl_FragColor, gl_FragDepth │ ▼ Per-Fragment Operations (depth test, stencil test, blending) │ ▼ Framebuffer The gray boxes (Vertex Shader, Fragment Shader) replaced the fixed-function T&L (Transform & Lighting) and texture environment stages. 5. Example: Minimal OpenGL 2.0 Shaders Vertex Shader (simple pass-through) void main() opengl 2.0

gl_ModelViewProjectionMatrix , gl_Vertex , gl_MultiTexCoord0 are built-in fixed-function legacy variables. Modern OpenGL (3.0+) replaces these with user-defined uniforms and attributes. 6. Hardware Requirements & Adoption | Feature | Minimum GPU Support | |---------|---------------------| | GLSL | Shader Model 2.0 (DirectX 9) | | NPOT Textures | GeForce FX (2003), Radeon 9500+ (2002) | | MRT | Radeon X800, GeForce 6800 | Modern OpenGL (3

gl_FragColor = texture2D(myTexture, gl_TexCoord[0].xy); GeForce 6800 | gl_FragColor = texture2D(myTexture

gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; gl_TexCoord[0] = gl_MultiTexCoord0;