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| This page describes the [[GPU_Commands|GPU commands]] used for textures. | | This page is obsolete, see [[GPU/Internal_Registers|here]] for GPU register information, including that of textures.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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| | |
| === 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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| | 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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| | 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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| | RGB888
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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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| | 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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| | GL_LUMINANCE
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| | GL_UNSIGNED_BYTE
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| |-
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| | 0x8
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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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| | 0xB
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| | ?
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| | GL_ALPHA
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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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| | 0xD
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| | ?
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| | ?
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| |}
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