diff options
author | Michal Krol <[email protected]> | 2009-03-08 19:15:47 +0100 |
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committer | Michal Krol <[email protected]> | 2009-03-08 19:16:36 +0100 |
commit | 8766677ac49c7430576ba4598dfe56c1c2655852 (patch) | |
tree | 51a6a475cfef7f32d15a7940d279a1f4b3deda5e /src/gallium/auxiliary/tgsi | |
parent | 2305642b2e8edcebdc727f1181f7dbfcc78e8028 (diff) |
tgsi: Document NV_vertex_program instruction set operations.
Diffstat (limited to 'src/gallium/auxiliary/tgsi')
-rw-r--r-- | src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt b/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt new file mode 100644 index 00000000000..d9eeb2676b4 --- /dev/null +++ b/src/gallium/auxiliary/tgsi/tgsi-instruction-set.txt @@ -0,0 +1,145 @@ +TGSI Instruction Specification +============================== +============================== + + +1 Instruction Set Operations +============================= + + +1.1 GL_NV_vertex_program +------------------------- + + +1.1.1 ARL - Address Register Load + + dst.x = floor(src.x) + + +1.1.2 MOV - Move + + dst.x = src.x + dst.y = src.y + dst.z = src.z + dst.w = src.w + + +1.1.3 LIT - Light Coefficients + + dst.x = 1.0 + dst.y = max(src.x, 0.0) + dst.z = (src.x > 0.0) ? pow(max(src.y, 0.0), clamp(src.w, -128.0, 128.0)) : 0.0 + dst.w = 1.0 + + +1.1.4 RCP - Reciprocal + + dst.x = 1.0 / src.x + dst.y = 1.0 / src.x + dst.z = 1.0 / src.x + dst.w = 1.0 / src.x + + +1.1.5 RSQ - Reciprocal Square Root + + dst.x = 1.0 / sqrt(abs(src.x)) + dst.y = 1.0 / sqrt(abs(src.x)) + dst.z = 1.0 / sqrt(abs(src.x)) + dst.w = 1.0 / sqrt(abs(src.x)) + + +1.1.6 EXP - Exponential Base 2 + + dst.x = pow(2.0, floor(src.x)) + dst.y = src.x - floor(src.x) + dst.z = pow(2.0, src.x) + dst.w = 1.0 + + +1.1.7 LOG - Logarithm Base 2 + + dst.x = floor(lg2(abs(src.x))) + dst.y = abs(src.x) / pow(2.0, floor(lg2(abs(src.x)))) + dst.z = lg2(abs(src.x)) + dst.w = 1.0 + + +1.1.8 MUL - Multiply + + dst.x = src0.x * src1.x + dst.y = src0.y * src1.y + dst.z = src0.z * src1.z + dst.w = src0.w * src1.w + + +1.1.9 ADD - Add + + dst.x = src0.x + src1.x + dst.y = src0.y + src1.y + dst.z = src0.z + src1.z + dst.w = src0.w + src1.w + + +1.1.10 DP3 - 3-component Dot Product + + dst.x = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + dst.y = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + dst.z = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + dst.w = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + + +1.1.11 DP4 - 4-component Dot Product + + dst.x = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + src0.w * src1.w + dst.y = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + src0.w * src1.w + dst.z = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + src0.w * src1.w + dst.w = src0.x * src1.x + src0.y * src1.y + src0.z * src1.z + src0.w * src1.w + + +1.1.12 DST - Distance Vector + + dst.x = 1.0 + dst.y = src0.y * src1.y + dst.z = src0.z + dst.w = src1.w + + +1.1.13 MIN - Minimum + + dst.x = min(src0.x, src1.x) + dst.y = min(src0.y, src1.y) + dst.z = min(src0.z, src1.z) + dst.w = min(src0.w, src1.w) + + +1.1.14 MAX - Maximum + + dst.x = max(src0.x, src1.x) + dst.y = max(src0.y, src1.y) + dst.z = max(src0.z, src1.z) + dst.w = max(src0.w, src1.w) + + +1.1.15 SLT - Set On Less Than + + dst.x = (src0.x < src1.x) ? 1.0 : 0.0 + dst.y = (src0.y < src1.y) ? 1.0 : 0.0 + dst.z = (src0.z < src1.z) ? 1.0 : 0.0 + dst.w = (src0.w < src1.w) ? 1.0 : 0.0 + + +1.1.16 SGE - Set On Greater Equal Than + + dst.x = (src0.x >= src1.x) ? 1.0 : 0.0 + dst.y = (src0.y >= src1.y) ? 1.0 : 0.0 + dst.z = (src0.z >= src1.z) ? 1.0 : 0.0 + dst.w = (src0.w >= src1.w) ? 1.0 : 0.0 + + +1.1.17 MAD - Multiply And Add + + dst.x = src0.x * src1.x + src2.x + dst.y = src0.y * src1.y + src2.y + dst.z = src0.z * src1.z + src2.z + dst.w = src0.w * src1.w + src2.w + |