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→Param4 format for command 0x00C0: output scale + texenv buffers?
Line 1,164:
Line 1,164:
This is used to specify the param for glTexEnv(..., ..., param).+
+
! Description
! Description
|-
|-
−| 31-0
+| 31-18
+| To be determined.
+|-
+| 17-16
+| Alpha output scale factor
+|-
+| 15-2
| To be determined
| To be determined
+|-
+| 1-0
+| Color output scale factor
|}
|}
−{| class="wikitable" border="1"
+! Scale value
+! Corresponding factor
+|-
+| 0x0
+| 1.0
+|-
+| 0x1
+| 2.0
+|-
+| 0x2
+| 4.0
+|}
+Probably also has something to do with Texenv buffer registers [[:GPU_Internal_Registers#GPUREG_00FD|PICA_REG_TEX_ENV_BUF_COLOR]] and [[GPU_Internal_Registers#GPUREG_00E0|PICA_REG_TEX_ENV_BUF_INPUT]].
=== Parameter value format for command 0x00C4 ===
=== Parameter value format for command 0x00C4 ===