3dbrew

GPU/Internal Registers: Difference between revisions

← Older editNewer edit →
Steveice10 (talk | contribs)
1,434 edits
Steveice10 (talk | contribs)
1,434 edits
Line 5,350: Line 5,350:


== Framebuffer registers ==
== Framebuffer registers ==
=== GPUREG_COLOR_OPERATION ===
{| class="wikitable" border="1"
! Bits
! Description
|-
| 0-1
| Fragment operation mode
|-
| 8
| Blend mode
|-
| 16-23
| 0xE4
|}
Fragment operation mode values:
{| class="wikitable" border="1"
! Value
! Description
|-
| 0
| Default
|-
| 1
| Gas
|-
| 3
| Shadow
|}
Blend mode values:
{| class="wikitable" border="1"
! Value
! Description
|-
| 0
| Logic op
|-
| 1
| Blend
|}
=== GPUREG_BLEND_FUNC ===
{| class="wikitable" border="1"
! Bits
! Description
|-
| 0-2
| RGB equation
|-
| 8-10
| Alpha equation
|-
| 16-19
| RGB source function
|-
| 20-23
| RGB destination function
|-
| 24-27
| Alpha source function
|-
| 28-31
| Alpha destination function
|}
Equation values:
{| class="wikitable" border="1"
! Value
! Description
|-
| 0
| Add
|-
| 1
| Subtract
|-
| 2
| Reverse subtract
|-
| 3
| Minimum
|-
| 4
| Maximum
|}
Function values:
{| class="wikitable" border="1"
! Value
! Description
|-
| 0
| Zero
|-
| 1
| One
|-
| 2
| Source color
|-
| 3
| One minus source color
|-
| 4
| Destination color
|-
| 5
| One minus destination color
|-
| 6
| Source alpha
|-
| 7
| One minus source alpha
|-
| 8
| Destination alpha
|-
| 9
| One minus destination alpha
|-
| 10
| Constant color
|-
| 11
| One minus constant color
|-
| 12
| Constant alpha
|-
| 13
| One minus constant alpha
|-
| 14
| Source alpha saturate
|}
=== GPUREG_LOGIC_OP ===
{| class="wikitable" border="1"
! Bits
! Description
|-
| 0-3
| Logic op
|}
Logic op values:
{| class="wikitable" border="1"
! Value
! Description
|-
| 0
| Clear
|-
| 1
| AND
|-
| 2
| Reverse AND
|-
| 3
| Copy
|-
| 4
| Set
|-
| 5
| Inverted copy
|-
| 6
| Noop
|-
| 7
| Invert
|-
| 8
| NAND
|-
| 9
| OR
|-
| 10
| NOR
|-
| 11
| XOR
|-
| 12
| Equivalent
|-
| 13
| Inverted AND
|-
| 14
| Reverse OR
|-
| 15
| Inverted OR
|}
=== GPUREG_BLEND_COLOR ===
{| class="wikitable" border="1"
! Bits
! Description
|-
| 0-7
| Red
|-
| 8-15
| Green
|-
| 16-23
| Blue
|-
| 24-31
| Alpha
|}
=== GPUREG_FRAGOP_ALPHA_TEST ===
{| class="wikitable" border="1"
! Bits
! Description
|-
| 0
| Enabled (0 = disabled, 1 = enabled)
|-
| 4-6
| Function
|-
| 8-15
| Reference value
|}
Function values:
{| class="wikitable" border="1"
! Value
! Description
|-
| 0
| Never
|-
| 1
| Always
|-
| 2
| Equal
|-
| 3
| Not equal
|-
| 4
| Less than
|-
| 5
| Less than or equal
|-
| 6
| Greater than
|-
| 7
| Greater than or equal
|}
=== GPUREG_STENCIL_TEST ===
{| class="wikitable" border="1"
! Bits
! Description
|-
| 0
| Enabled (0 = disabled, 1 = enabled)
|-
| 4-6
| Function
|-
| 8-15
| Buffer mask
|-
| 16-23
| Reference value
|-
| 24-31
| Mask
|}
Function values:
{| class="wikitable" border="1"
! Value
! Description
|-
| 0
| Never
|-
| 1
| Always
|-
| 2
| Equal
|-
| 3
| Not equal
|-
| 4
| Less than
|-
| 5
| Less than or equal
|-
| 6
| Greater than
|-
| 7
| Greater than or equal
|}
=== GPUREG_STENCIL_OP ===
{| class="wikitable" border="1"
! Bits
! Description
|-
| 0-2
| Fail operation
|-
| 4-6
| Z-fail operation
|-
| 8-10
| Z-pass operation
|}
Operation values:
{| class="wikitable" border="1"
! Value
! Description
|-
| 0
| Keep
|-
| 1
| Zero
|-
| 2
| Replace
|-
| 3
| Increment
|-
| 4
| Decrement
|-
| 5
| Invert
|-
| 6
| Increment and wrap
|-
| 7
| Decrement and wrap
|}
=== GPUREG_DEPTH_COLOR_MASK ===
{| class="wikitable" border="1"
! Bits
! Description
|-
| 0
| Depth test enabled (0 = disabled, 1 = enabled)
|-
| 4-6
| Depth function
|-
| 8
| Red write enabled (0 = disabled, 1 = enabled)
|-
| 9
| Green write enabled (0 = disabled, 1 = enabled)
|-
| 10
| Blue write enabled (0 = disabled, 1 = enabled)
|-
| 11
| Alpha write enabled (0 = disabled, 1 = enabled)
|-
| 12
| Depth write enabled (0 = disabled, 1 = enabled)
|}
Depth function values:
{| class="wikitable" border="1"
! Value
! Description
|-
| 0
| Never
|-
| 1
| Always
|-
| 2
| Equal
|-
| 3
| Not equal
|-
| 4
| Less than
|-
| 5
| Less than or equal
|-
| 6
| Greater than
|-
| 7
| Greater than or equal
|}


=== GPUREG_FRAMEBUFFER_INVALIDATE ===
=== GPUREG_FRAMEBUFFER_INVALIDATE ===
Retrieved from "https://www.3dbrew.org/wiki/GPU/Internal_Registers"