This page describes the GPU commands used for textures.
Command set 0x809F0081
| Command Index
|
CommandID
|
Parameter
|
Description
|
| 0
|
0x809F0081
|
|
This is used to set the current texture info used for rendering.
|
| 1
|
0x000F008E
|
u32 color type
|
This sets the current texture color type.
|
Textures are initially disabled when beginning rendering for each mesh, this command set also enables textures.
Texture info parameter structure for CmdID 0x809F0081
| Index Word
|
Description
|
| 0
|
?
|
| 1
|
The low u16 is the texture image width, and the high u16 is the texture image height.
|
| 2
|
Texture parameters, initialized by glTexParameter().
|
| 3
|
?
|
| 4
|
Texture data physical address >> 3. This is normally located in VRAM.
|
| 5-9
|
?
|
Texture parameters
| Bit
|
Description
|
GL parameter name
|
| 0
|
Normally this is value 0.
|
|
| 1
|
0 = GL_NEAREST, 1 = GL_LINEAR.
|
GL_TEXTURE_MAG_FILTER
|
| 2
|
1 = GL_LINEAR, GL_LINEAR_MIPMAP_NEAREST, or GL_LINEAR_MIPMAP_LINEAR. Value zero otherwise.
|
GL_TEXTURE_MIN_FILTER
|
| 3
|
Unused?
|
?
|
| 7-4
|
2 = texture color type 0xC, 0 otherwise.(Enable/disable texture data compression?)
|
|
| 11-8
|
0 = GL_CLAMP_TO_EDGE, 1=unknown, 2=GL_REPEAT, 3=unknown.
|
GL_TEXTURE_WRAP_S
|
| 15-12
|
Same values as GL_TEXTURE_WRAP_S.
|
GL_TEXTURE_WRAP_T
|
| 24
|
1 = GL_NEAREST_MIPMAP_LINEAR, or GL_LINEAR_MIPMAP_LINEAR. Value zero otherwise.
|
GL_TEXTURE_MIN_FILTER
|
| 27-25
|
Unused?
|
| 30-28
|
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.
|
?
|
| 31
|
Unused?
|
?
|
Texture color type parameter values for CmdID 0x000F008E
| Value
|
Description
|
GL Format
|
GL Data Type
|
| 0x0
|
RGBA8888
|
GL_RGBA
|
GL_UNSIGNED_BYTE
|
| 0x1
|
BGR888
|
GL_RGB
|
GL_UNSIGNED_BYTE
|
| 0x2
|
RGBA5551
|
GL_RGBA
|
GL_UNSIGNED_SHORT_5_5_5_1
|
| 0x3
|
RGB565
|
GL_RGB
|
GL_UNSIGNED_SHORT_5_6_5
|
| 0x4
|
RGBA4444
|
GL_RGBA
|
GL_UNSIGNED_SHORT_4_4_4_4
|
| 0x5
|
|
GL_LUMINANCE_ALPHA
|
GL_UNSIGNED_BYTE
|
| 0x6
|
?
|
?
|
GL_UNSIGNED_BYTE
|
| 0x7
|
|
GL_LUMINANCE
|
GL_UNSIGNED_BYTE
|
| 0x8
|
|
GL_ALPHA
|
GL_UNSIGNED_BYTE
|
| 0x9
|
?
|
GL_LUMINANCE_ALPHA
|
?
|
| 0xA
|
?
|
GL_LUMINANCE
|
|
| 0xB
|
?
|
GL_ALPHA
|
|
| 0xC
|
Compression related?
|
?
|
|
| 0xD
|
?
|
?
|
|