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gallium: Add support for 32x32 muls with 64 bit results

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The code introduces two new 32bit integer multiplication opcodes which
can be used to produce correct 64 bit results. GLSL, OpenCL and D3D10+
require them. We use two seperate opcodes, because they match the
behavior of GLSL and OpenCL, are a lot easier to add than a single
opcode with multiple destinations and because there's not much (any)
difference wrt code-generation.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: José Fonseca <jfonseca@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Zack Rusin
2013-10-08 15:11:02 -04:00
parent c01c6a95b4
commit 6905698fc2
8 changed files with 103 additions and 1 deletions
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5
src/gallium/include/pipe/p_shader_tokens.h
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@@ -450,7 +450,10 @@ struct tgsi_property_data {
#define TGSI_OPCODE_TXB2 178
#define TGSI_OPCODE_TXL2 179
#define TGSI_OPCODE_LAST 180
#define TGSI_OPCODE_IMUL_HI 180
#define TGSI_OPCODE_UMUL_HI 181
#define TGSI_OPCODE_LAST 182
#define TGSI_SAT_NONE 0 /* do not saturate */
#define TGSI_SAT_ZERO_ONE 1 /* clamp to [0,1] */