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Nintendo OpenGL (edit)

Revision as of 21:24, 10 November 2014

882 bytes added ,  21:24, 10 November 2014
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The PICA200 is an opengl ES 1.1 compliant GPU manufactured by DMP. It comes loaded with a number of extensions that make it similar to an openGL ES 2.0 compliant GPU (ability to run programmable vertex/geometry shaders, for instance). Because of this, Nintendo wrapped GPU access into an openGL ES 2.0 implementation with some limitations. As the fragment stage of the pipeline is non-programmable, Nintendo instead gives developers the ability to configure a number of fragment-related values through glGetUniformLocation and glSetUniform. See below for the full list.
 
The PICA200 is an opengl ES 1.1 compliant GPU manufactured by DMP. It comes loaded with a number of extensions that make it similar to an openGL ES 2.0 compliant GPU (ability to run programmable vertex/geometry shaders, for instance). Because of this, Nintendo wrapped GPU access into an openGL ES 2.0 implementation with some limitations. As the fragment stage of the pipeline is non-programmable, Nintendo instead gives developers the ability to configure a number of fragment-related values through glGetUniformLocation and glSetUniform. See below for the full list.
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== Shader program structure ==
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When uniform values are set, they are attached to the current shader program and stored into the corresponding shader program structure.
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{| class="wikitable" border="1"
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! Offset
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!  Size
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!  Description
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|-
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| 0x000
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| 0x04
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| Value 0x0 ?
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|-
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| 0x004
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| 0x04
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| Program ID
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|-
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| 0x008
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| 0x04
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| Value -1 ?
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|-
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| 0x01C
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| 0x04
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| Pointer to program-specific uniform table
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|-
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| 0x020
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| 0x04
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| Total number of uniforms for program
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|-
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| 0x028
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| 0x04
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| Number of program-specific uniforms
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|-
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| 0x64C
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| 0x04
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| Value for GPU register 0x0104
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|-
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| 0x7C0
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| 0x04
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| Bitfield containing dmp_FragmentLightSource[n].shadowed values
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|-
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| 0x7D8
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| 0x04
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| Bitfield containing dmp_FragmentLightSource[n].geomFactor0 / dmp_FragmentLightSource[n].geomFactor1 / dmp_FragmentLightSource[n].twoSideDiffuse values
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|-
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| 0xA20
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| 0x70*8
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| Table of structs for 8 dmp_FragmentLightSource
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|}
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== Fragment "uniform" list ==
 
== Fragment "uniform" list ==
Smea
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