1,434
edits
Changes
→Framebuffer registers
Line 6,062:
Line 6,062:
| 12-21
| 12-21
| unsigned, Height - 1
| unsigned, Height - 1
+|}
+
+=== GPUREG_GAS_LIGHT_XY ===
+
+{| class="wikitable" border="1"
+! Bits
+! Description
+|-
+| 0-7
+| unsigned, Planar shading minimum intensity
+|-
+| 8-15
+| unsigned, Planar shading maximum intensity
+|-
+| 16-23
+| unsigned, Planar shading density attenuation
+|}
+
+=== GPUREG_GAS_LIGHT_Z ===
+
+{| class="wikitable" border="1"
+! Bits
+! Description
+|-
+| 0-7
+| unsigned, View shading minimum intensity
+|-
+| 8-15
+| unsigned, View shading maximum intensity
+|-
+| 16-23
+| unsigned, View shading density attenuation
+|}
+
+=== GPUREG_GAS_LIGHT_Z_COLOR ===
+
+{| class="wikitable" border="1"
+! Bits
+! Description
+|-
+| 0-7
+| unsigned, View shading effect in line-of-sight direction
+|}
+
+=== GPUREG_GAS_LUT_INDEX ===
+
+{| class="wikitable" border="1"
+! Bits
+! Description
+|-
+| 0-15
+| unsigned, Index
+|}
+
+=== GPUREG_GAS_LUT_DATA ===
+
+{| 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 gas look-up table, starting at the index selected with GPUREG_GAAS_LUT_INDEX.
+
+==== Gas Look-Up Table ====
+
+16 elements:
+
+First 8 elements:
+{| class="wikitable" border="1"
+! Bits
+! Description
+|-
+| 0-7
+| signed, Red
+|-
+| 8-15
+| signed, Green
+|-
+| 16-23
+| signed, Blue
+|}
+
+Last 8 elements:
+{| class="wikitable" border="1"
+! Bits
+! Description
+|-
+| 0-7
+| unsigned, Red
+|-
+| 8-15
+| unsigned, Green
+|-
+| 16-23
+| unsigned, Blue
+|}
+
+=== GPUREG_GAS_DELTAZ_DEPTH ===
+
+{| class="wikitable" border="1"
+! Bits
+! Description
+|-
+| 0-23
+| fixed0.16.8, Depth direction attenuation proportion
|}
|}