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GPU/Internal Registers (edit)

Revision as of 02:22, 3 December 2015

4,600 bytes added ,  02:22, 3 December 2015
→‎Texturing registers
Line 4,583: Line 4,583:  
! Description
 
! Description
 
|-
 
|-
−
| 0-1
+
| 0
 
| Enabled (0 = disabled, 1 = enabled)
 
| Enabled (0 = disabled, 1 = enabled)
 
|}
 
|}
Line 4,805: Line 4,805:  
|}
 
|}
   −
Reference tables:
+
Reference table values:
    
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
Line 4,826: Line 4,826:  
| Color difference table
 
| Color difference table
 
|}
 
|}
 +
 +
=== GPUREG_PROCTEX_LUT_DATA''i'' ===
 +
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-31
 +
| LUT data
 +
|}
 +
 +
These registers behave as a FIFO queue. Each write to these registers writes the provided value to the table selected with GPUREG_PROCTEX_LUT, starting at the selected index.
    
==== Noise Table ====
 
==== Noise Table ====
Line 4,909: Line 4,921:  
|}
 
|}
   −
=== GPUREG_PROCTEX_LUT_DATA''i'' ===
+
=== GPUREG_TEXENV''i''_SOURCE ===
 +
 
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-3
 +
| RGB source 0
 +
|-
 +
| 4-7
 +
| RGB source 1
 +
|-
 +
| 8-11
 +
| RGB source 2
 +
|-
 +
| 16-19
 +
| Alpha source 0
 +
|-
 +
| 20-23
 +
| Alpha source 1
 +
|-
 +
| 24-27
 +
| Alpha source 2
 +
|}
 +
 
 +
Source values:
 +
 
 +
{| class="wikitable" border="1"
 +
! Value
 +
! Description
 +
|-
 +
| 0
 +
| Primary color
 +
|-
 +
| 1
 +
| Fragment primary color
 +
|-
 +
| 2
 +
| Fragment secondary color
 +
|-
 +
| 3
 +
| Texture 0
 +
|-
 +
| 4
 +
| Texture 1
 +
|-
 +
| 5
 +
| Texture 2
 +
|-
 +
| 6
 +
| Texture 3
 +
|-
 +
| 13
 +
| Previous buffer
 +
|-
 +
| 14
 +
| Constant (from GPUREG_TEXENV''i''_COLOR)
 +
|-
 +
| 15
 +
| Previous
 +
|}
 +
 
 +
=== GPUREG_TEXENV''i''_OPERAND ===
 +
 
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-3
 +
| RGB operand 0
 +
|-
 +
| 4-7
 +
| RGB operand 1
 +
|-
 +
| 8-11
 +
| RGB operand 2
 +
|-
 +
| 12-14
 +
| Alpha operand 0
 +
|-
 +
| 16-18
 +
| Alpha operand 1
 +
|-
 +
| 20-22
 +
| Alpha operand 2
 +
|}
 +
 
 +
RGB operand values:
 +
 
 +
{| class="wikitable" border="1"
 +
! Value
 +
! Description
 +
|-
 +
| 0
 +
| Source color
 +
|-
 +
| 1
 +
| One minus source color
 +
|-
 +
| 2
 +
| Source alpha
 +
|-
 +
| 3
 +
| One minus source alpha
 +
|-
 +
| 4
 +
| Source red
 +
|-
 +
| 5
 +
| One minus source red
 +
|-
 +
| 8
 +
| Source green
 +
|-
 +
| 9
 +
| One minus source green
 +
|-
 +
| 12
 +
| Source blue
 +
|-
 +
| 13
 +
| One minus source blue
 +
|}
 +
 
 +
Alpha operand values:
 +
 
 +
{| class="wikitable" border="1"
 +
! Value
 +
! Description
 +
|-
 +
| 0
 +
| Source alpha
 +
|-
 +
| 1
 +
| One minus source alpha
 +
|-
 +
| 2
 +
| Source red
 +
|-
 +
| 3
 +
| One minus source red
 +
|-
 +
| 4
 +
| Source green
 +
|-
 +
| 5
 +
| One minus source green
 +
|-
 +
| 6
 +
| Source blue
 +
|-
 +
| 7
 +
| One minus source blue
 +
|}
 +
 
 +
=== GPUREG_TEXENV''i''_COMBINER ===
 +
 
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-3
 +
| RGB combine
 +
|-
 +
| 16-19
 +
| Alpha combine
 +
|}
 +
 
 +
Combine values:
 +
 
 +
{| class="wikitable" border="1"
 +
! Value
 +
! Description
 +
|-
 +
| 0
 +
| Replace
 +
|-
 +
| 1
 +
| Modulate
 +
|-
 +
| 2
 +
| Add
 +
|-
 +
| 3
 +
| Add signed
 +
|-
 +
| 4
 +
| Interpolate
 +
|-
 +
| 5
 +
| Subtract
 +
|-
 +
| 6
 +
| Dot3 RGB
 +
|-
 +
| 7
 +
| Dot3 RGBA
 +
|-
 +
| 8
 +
| Multiply then add
 +
|-
 +
| 9
 +
| Add then multiply
 +
|}
 +
 
 +
=== GPUREG_TEXENV''i''_COLOR ===
 +
 
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-7
 +
| Red
 +
|-
 +
| 8-15
 +
| Green
 +
|-
 +
| 16-23
 +
| Blue
 +
|-
 +
| 24-31
 +
| Alpha
 +
|}
 +
 
 +
=== GPUREG_TEXENV''i''_SCALE ===
 +
 
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-1
 +
| RGB scale
 +
|-
 +
| 16-17
 +
| Alpha scale
 +
|}
 +
 
 +
Scale values:
 +
 
 +
{| class="wikitable" border="1"
 +
! Value
 +
! Description
 +
|-
 +
| 0
 +
| 1x
 +
|-
 +
| 1
 +
| 2x
 +
|-
 +
| 2
 +
| 4x
 +
|}
 +
 
 +
=== GPUREG_TEXENV_UPDATE_BUFFER ===
 +
 
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-2
 +
| Fog mode
 +
|-
 +
| 3
 +
| Shading density source
 +
|-
 +
| 8
 +
| TexEnv 1 RGB buffer input
 +
|-
 +
| 9
 +
| TexEnv 2 RGB buffer input
 +
|-
 +
| 10
 +
| TexEnv 3 RGB buffer input
 +
|-
 +
| 11
 +
| TexEnv 4 RGB buffer input
 +
|-
 +
| 12
 +
| TexEnv 1 alpha buffer input
 +
|-
 +
| 13
 +
| TexEnv 2 alpha buffer input
 +
|-
 +
| 14
 +
| TexEnv 3 alpha buffer input
 +
|-
 +
| 15
 +
| TexEnv 4 alpha buffer input
 +
|-
 +
| 16
 +
| Z flip (0 = don't flip, 1 = flip)
 +
|}
 +
 
 +
This register is shared between the gas/fog mode configuration and TexEnv buffer inputs. TexEnv buffer inputs are typically written with a mask of 0x2, and the gas/fog mode configuration is typically written with a mask of 0x5.
 +
 
 +
Fog mode values:
 +
 
 +
{| class="wikitable" border="1"
 +
! Value
 +
! Description
 +
|-
 +
| 0
 +
| Disabled
 +
|-
 +
| 5
 +
| Fog
 +
|-
 +
| 7
 +
| Gas
 +
|}
 +
 
 +
Shading density source values:
 +
 
 +
{| class="wikitable" border="1"
 +
! Value
 +
! Description
 +
|-
 +
| 0
 +
| Plain density
 +
|-
 +
| 1
 +
| Depth density
 +
|}
 +
 
 +
Buffer input values:
 +
 
 +
{| class="wikitable" border="1"
 +
! Value
 +
! Description
 +
|-
 +
| 0
 +
| Previous buffer
 +
|-
 +
| 1
 +
| Previous
 +
|}
 +
 
 +
=== GPUREG_FOG_COLOR ===
 +
 
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-7
 +
| Red
 +
|-
 +
| 8-15
 +
| Green
 +
|-
 +
| 16-23
 +
| Blue
 +
|}
 +
 
 +
=== GPUREG_GAS_ATTENUATION ===
 +
 
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-15
 +
| float16, Gas density attenuation
 +
|}
 +
 
 +
=== GPUREG_GAS_ACCMAX ===
 +
 
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-15
 +
| float16, Gas maximum density accumulation
 +
|}
 +
 
 +
=== GPUREG_FOG_LUT_INDEX ===
 +
 
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-31
 +
| Index
 +
|}
 +
 
 +
=== GPUREG_FOG_LUT_DATA''i'' ===
    
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
Line 4,919: Line 5,314:  
|}
 
|}
   −
These registers behave as a FIFO queue. Each write to these registers writes the provided value to the table selected with GPUREG_PROCTEX_LUT, sequentially.
+
These registers behave as a FIFO queue. Each write to these registers writes the provided value to the fog look-up table, starting at the index selected with GPUREG_FOG_LUT_INDEX.
 +
 
 +
==== Fog Look-Up Table ====
 +
 
 +
128 elements:
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-12
 +
| fixed13 (11 fractional bits), Difference from next element
 +
|-
 +
| 13-23
 +
| unsigned fixed11, Value
 +
|}
 +
 
 +
=== GPUREG_TEXENV_BUFFER_COLOR ===
 +
 
 +
{| class="wikitable" border="1"
 +
! Bits
 +
! Description
 +
|-
 +
| 0-7
 +
| Red
 +
|-
 +
| 8-15
 +
| Green
 +
|-
 +
| 16-23
 +
| Blue
 +
|-
 +
| 24-31
 +
| Alpha
 +
|}
    
== Framebuffer registers ==
 
== Framebuffer registers ==
Steveice10
1,434

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Retrieved from "https://www.3dbrew.org/wiki/Special:MobileDiff/14780"

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