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A Hardware-eye View of the Graphics Process. MC Vertices. Vertex Processor. Attribute variables. Input Devices. Uniform variables. CPU. SC Vertices. Varying variables. B u s. Shader Memory. Rasterizer. Network. Display List. Pixel Parameters. Varying variables. Uniform variables. - PowerPoint PPT Presentation
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ComputerGraphics mjb – April 2, 2007
VideoDriver
CPU
InputDevices
Double-bufferedFramebuffers
Rasterizer
Cursor
VideoInput
Bus
Network DisplayList
Texture Memory
Z-Buffer
Front
Back
MC Vertices
SC Vertices
Pixel Parameters
RGBAZPixels
MC = Model CoordinatesWC = World CoordinatesEC = Eye CoordinatesCC = Clip CoordinatesNDC = Normalized Device CoordinatesSC = Screen CoordinatesTC = Texture Coordinates
RGBATexels
TC
ShaderMemory
Varying variables
Varying variables
Attributevariables
Uniformvariables
gluLookAt Projection Viewport
NDCECWCMC SCHomogeneous
Division
CC
Uniformvariables
A Hardware-eye View of the Graphics Process
VertexProcessor
FragmentProcessor
Transform
ComputerGraphics mjb – April 2, 2007
CPU
Rasterizer
VertexProcessor
Bus
FragmentProcessor
Vertices
Pixels
A Shader-eye View of the Graphics Process
Interpolated Values
AssembleGeometry
Transformed Vertices
Assembled Primitive
ComputerGraphics mjb – April 2, 2007
Vertices
CPU
Rasterizer
VertexProcessor
Bus
FragmentProcessor
Pixels
A Shader-eye View of the Graphics Process, with Geometry Shaders
Interpolated Values
Transformed Vertices
Assembled Primitive
Create NewGeometry
Assemble NewGeometry
AssembleGeometry
ComputerGraphics mjb – April 2, 2007
Color, LightIntensity
Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity, Color, LightIntensity,
Varying Variables are Interpolated by the Rasterizer
Rasterizer
FragmentProcessor
ComputerGraphics mjb – April 2, 2007
In Hardware, it’s Really Parallel-Processed
Rasterizer
Vertex
Processor
Fragment
Processor
RGBAZPixels
Fragment
Processor
Fragment
Processor
Fragment
Processor
RGBAZPixels
RGBAZPixels
RGBAZPixels
Vertex
Processor
Vertex
Processor
Vertex
Processor
MC Vertices
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