Difference between revisions of "GPU Textures"

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m (Replaced content with "This page is obsolete, see here for GPU register information, including that of textures.")
 
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This page describes the [[GPU_Commands|GPU commands]] used for textures.
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This page is obsolete, see [[GPU/Internal_Registers|here]] for GPU register information, including that of textures.
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== Command set 0x809F0081 ==
 
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{| class="wikitable" border="1"
 
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!  Command Index
 
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!  CommandID
 
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!  Parameter
 
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!  Description
 
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|-
 
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| 0
 
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| 0x809F0081
 
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|
 
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| This is used to set the current texture info used for rendering.
 
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|-
 
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| 1
 
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| 0x000F008E
 
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| u32 color type
 
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| This sets the current texture color type.
 
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|}
 
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Textures are initially disabled when beginning rendering for each mesh, this command set also enables textures.
 
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=== Texture info parameter structure for CmdID 0x809F0081 ===
 
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{| class="wikitable" border="1"
 
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!  Index Word
 
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!  Description
 
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|-
 
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| 0
 
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| ?
 
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|-
 
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| 1
 
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| The low u16 is the texture image width, and the high u16 is the texture image height.
 
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|-
 
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| 2
 
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| Texture parameters, initialized by glTexParameter().
 
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|-
 
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| 3
 
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| ?
 
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|-
 
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| 4
 
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| Texture data physical address >> 3. This is normally located in VRAM.
 
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|-
 
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| 5-9
 
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| ?
 
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|}
 
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==== Texture parameters ====
 
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{| class="wikitable" border="1"
 
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!  Bit
 
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!  Description
 
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!  GL parameter name
 
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|-
 
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| 0
 
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| Normally this is value 0.
 
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|
 
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|-
 
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| 1
 
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| 0 = GL_NEAREST, 1 = GL_LINEAR.
 
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| GL_TEXTURE_MAG_FILTER
 
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|-
 
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| 2
 
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| 1 = GL_LINEAR, GL_LINEAR_MIPMAP_NEAREST, or GL_LINEAR_MIPMAP_LINEAR. Value zero otherwise.
 
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| GL_TEXTURE_MIN_FILTER
 
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|-
 
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| 3
 
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| Unused?
 
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| ?
 
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|-
 
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| 7-4
 
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| 2 = texture color type 0xC, 0 otherwise.(Enable/disable texture data compression?)
 
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|
 
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|-
 
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| 11-8
 
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| 0 = GL_CLAMP_TO_EDGE, 1=unknown, 2=GL_REPEAT, 3=unknown.
 
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| GL_TEXTURE_WRAP_S
 
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|-
 
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| 15-12
 
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| Same values as GL_TEXTURE_WRAP_S.
 
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| GL_TEXTURE_WRAP_T
 
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|-
 
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| 24
 
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| 1 = GL_NEAREST_MIPMAP_LINEAR, or GL_LINEAR_MIPMAP_LINEAR. Value zero otherwise.
 
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| GL_TEXTURE_MIN_FILTER
 
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|-
 
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| 27-25
 
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| Unused?
 
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|-
 
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| 30-28
 
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| When some flag=1: value1=GL_TEXTURE_2D, value0 when the input parameter is not GL_TEXTURE_2D. When some flag=0: 0=GL_TEXTURE_2D, 1-4=unknown.
 
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| ?
 
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|-
 
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| 31
 
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| Unused?
 
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| ?
 
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|}
 
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=== Texture color type parameter values for CmdID 0x000F008E ===
 
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{| class="wikitable" border="1"
 
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!  Value
 
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!  Description
 
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!  GL Format
 
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!  GL Data Type
 
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|-
 
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| 0x0
 
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| RGBA8888
 
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| GL_RGBA
 
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| GL_UNSIGNED_BYTE
 
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|-
 
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| 0x1
 
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| BGR888
 
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| GL_RGB
 
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| GL_UNSIGNED_BYTE
 
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|-
 
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| 0x2
 
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| RGBA5551
 
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| GL_RGBA
 
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| GL_UNSIGNED_SHORT_5_5_5_1
 
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|-
 
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| 0x3
 
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| RGB565
 
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| GL_RGB
 
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| GL_UNSIGNED_SHORT_5_6_5
 
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|-
 
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| 0x4
 
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| RGBA4444
 
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| GL_RGBA
 
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| GL_UNSIGNED_SHORT_4_4_4_4
 
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|-
 
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| 0x5
 
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|
 
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| GL_LUMINANCE_ALPHA
 
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| GL_UNSIGNED_BYTE
 
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|-
 
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| 0x6
 
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| ?
 
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| ?
 
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| GL_UNSIGNED_BYTE
 
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|-
 
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| 0x7
 
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|
 
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| GL_LUMINANCE
 
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| GL_UNSIGNED_BYTE
 
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|-
 
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| 0x8
 
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|
 
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| GL_ALPHA
 
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| GL_UNSIGNED_BYTE
 
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|-
 
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| 0x9
 
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| ?
 
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| GL_LUMINANCE_ALPHA
 
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| ?
 
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|-
 
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| 0xA
 
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| ?
 
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| GL_LUMINANCE
 
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|
 
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|-
 
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| 0xB
 
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| ?
 
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| GL_ALPHA
 
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|
 
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|-
 
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| 0xC
 
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| Compression related?
 
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| ?
 
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|
 
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|-
 
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| 0xD
 
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| ?
 
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| ?
 
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|
 
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|}
 

Latest revision as of 05:34, 5 December 2015

This page is obsolete, see here for GPU register information, including that of textures.

Retrieved from "https://www.3dbrew.org/w/index.php?title=GPU_Textures&oldid=14844"