Mesa (master): r600g: update comments about ALU src operands
Alex Deucher
agd5f at kemper.freedesktop.org
Thu Aug 19 16:07:02 UTC 2010
Module: Mesa
Branch: master
Commit: 076c53879b90855ecf38602584f22e4ab6db7569
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=076c53879b90855ecf38602584f22e4ab6db7569
Author: Alex Deucher <alexdeucher at gmail.com>
Date: Thu Aug 19 12:06:20 2010 -0400
r600g: update comments about ALU src operands
---
src/gallium/drivers/r600/r600_shader.c | 10 ++++++++--
src/gallium/drivers/r600/r600_sq.h | 4 ++++
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index 4d390f9..4557303 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -362,9 +362,15 @@ int r600_shader_from_tgsi(const struct tgsi_token *tokens, struct r600_shader *s
shader->processor_type = ctx.type;
/* register allocations */
- /* Values [0,127] correspond to GPR[0..127].
- * Values [256,511] correspond to cfile constants c[0..255].
+ /* Values [0,127] correspond to GPR[0..127].
+ * Values [128,159] correspond to constant buffer bank 0
+ * Values [160,191] correspond to constant buffer bank 1
+ * Values [256,511] correspond to cfile constants c[0..255].
* Other special values are shown in the list below.
+ * 244 ALU_SRC_1_DBL_L: special constant 1.0 double-float, LSW. (RV670+)
+ * 245 ALU_SRC_1_DBL_M: special constant 1.0 double-float, MSW. (RV670+)
+ * 246 ALU_SRC_0_5_DBL_L: special constant 0.5 double-float, LSW. (RV670+)
+ * 247 ALU_SRC_0_5_DBL_M: special constant 0.5 double-float, MSW. (RV670+)
* 248 SQ_ALU_SRC_0: special constant 0.0.
* 249 SQ_ALU_SRC_1: special constant 1.0 float.
* 250 SQ_ALU_SRC_1_INT: special constant 1 integer.
diff --git a/src/gallium/drivers/r600/r600_sq.h b/src/gallium/drivers/r600/r600_sq.h
index da71778..819624e 100644
--- a/src/gallium/drivers/r600/r600_sq.h
+++ b/src/gallium/drivers/r600/r600_sq.h
@@ -584,6 +584,10 @@
#define C_SQ_TEX_WORD2_SRC_SEL_W 0x1FFFFFFF
/*
+ * 244 ALU_SRC_1_DBL_L: special constant 1.0 double-float, LSW. (RV670+)
+ * 245 ALU_SRC_1_DBL_M: special constant 1.0 double-float, MSW. (RV670+)
+ * 246 ALU_SRC_0_5_DBL_L: special constant 0.5 double-float, LSW. (RV670+)
+ * 247 ALU_SRC_0_5_DBL_M: special constant 0.5 double-float, MSW. (RV670+)
* 248 SQ_ALU_SRC_0: special constant 0.0.
* 249 SQ_ALU_SRC_1: special constant 1.0 float.
* 250 SQ_ALU_SRC_1_INT: special constant 1 integer.
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