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GPU/Internal Registers (edit)

Revision as of 06:41, 1 December 2015

2,075 bytes added ,  06:41, 1 December 2015
m
→‎Texturing registers
Line 4,376: Line 4,376:  
| 16
 
| 16
 
| Clear texture cache (0 = don't clear, 1 = clear)
 
| Clear texture cache (0 = don't clear, 1 = clear)
 +
|}
 +
 +
=== GPUREG_TEXUNIT''i''_BORDER_COLOR ===
 +
 +
{| class="wikitable" border="1"
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! Bits
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! Description
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|-
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| 0-7
 +
| Red
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|-
 +
| 8-15
 +
| Green
 +
|-
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| 16-23
 +
| Blue
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|-
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| 24-31
 +
| Alpha
 +
|}
 +
 +
=== GPUREG_TEXUNIT''i''_DIM ===
 +
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
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| 0-15
 +
| Height
 +
|-
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| 16-31
 +
| Width
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|}
 +
 +
=== GPUREG_TEXUNIT''i''_PARAM ===
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 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 1
 +
| Magnification filter
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|-
 +
| 2
 +
| Minification filter
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|-
 +
| 4-5
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| ETC1 (0 = not ETC1, 2 = ETC1)
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|-
 +
| 8-10
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| Wrap T
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|-
 +
| 12-14
 +
| Wrap S
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|-
 +
| 20
 +
| Shadow (Texture 0 only, 0 = not shadow, 1 = shadow)
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|-
 +
| 24
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| Mipmap filter
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|-
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| 28-30
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| Type (Texture 0 only)
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|}
 +
 +
Filter values:
 +
 +
{| class="wikitable" border="1"
 +
! Value
 +
! Description
 +
|-
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| 0
 +
| Nearest
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|-
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| 1
 +
| Linear
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|}
 +
 +
Wrap values:
 +
 +
{| class="wikitable" border="1"
 +
! Value
 +
! Description
 +
|-
 +
| 0
 +
| Clamp to edge
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|-
 +
| 1
 +
| Clamp to border
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|-
 +
| 2
 +
| Repeat
 +
|-
 +
| 3
 +
| Mirrored repeat
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|}
 +
 +
Type values:
 +
 +
{| class="wikitable" border="1"
 +
! Value
 +
! Description
 +
|-
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| 0
 +
| 2D
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|-
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| 1
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| Cube map
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|-
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| 2
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| Shadow 2D
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|-
 +
| 3
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| Projection
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|-
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| 4
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| Shadow cube
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|-
 +
| 5
 +
| Disabled
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|}
 +
 +
=== GPUREG_TEXUNIT''i''_LOD ===
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 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-15
 +
| fixed13 (8 fractional bits), Bias
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|-
 +
| 16-23
 +
| Max Level
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|-
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| 24-31
 +
| Min Level
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|}
 +
 +
=== GPUREG_TEXUNIT''i''_ADDR''i'' ===
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 +
{| class="wikitable" border="1"
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! Bits
 +
! Description
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|-
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| 0-15
 +
| Physical Address >> 3
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|}
 +
 +
If the texture is a cube:
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 +
{| class="wikitable" border="1"
 +
! Register
 +
! Description
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|-
 +
| ADDR1
 +
| Positive X
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|-
 +
| ADDR2
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| Negative X
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|-
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| ADDR3
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| Positive Y
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|-
 +
| ADDR4
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| Negative Y
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|-
 +
| ADDR5
 +
| Positive Z
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|-
 +
| ADDR6
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| Negative Z
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|}
 +
 +
Otherwise, ADDR(1) points to a 2D texture, and the rest are empty.
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 +
=== GPUREG_TEXUNIT''i''_SHADOW ===
 +
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
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|-
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| 0
 +
| Perspective (0 = not perspective, 1 = perspective)
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|-
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| 1-23
 +
| upper 23 bits of fixed24, Z bias
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|-
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| 24-31
 +
| Z scale
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|}
 +
 +
=== GPUREG_TEXUNIT''i''_TYPE ===
 +
 +
{| class="wikitable" border="1"
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! Bits
 +
! Description
 +
|-
 +
| 0-31
 +
| [[GPU_Textures#Texture_color_types|Format]]
 
|}
 
|}
  
Steveice10
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