diff options
Diffstat (limited to 'src/gallium/docs/build/html/tgsi.html')
| -rw-r--r-- | src/gallium/docs/build/html/tgsi.html | 842 |
1 files changed, 842 insertions, 0 deletions
diff --git a/src/gallium/docs/build/html/tgsi.html b/src/gallium/docs/build/html/tgsi.html index ede551e79e2..207607b90a6 100644 --- a/src/gallium/docs/build/html/tgsi.html +++ b/src/gallium/docs/build/html/tgsi.html @@ -51,6 +51,823 @@ for describing shaders. Since Gallium is inherently shaderful, shaders are an important part of the API. TGSI is the only intermediate representation used by all drivers.</p> +<div class="section" id="from-gl-nv-vertex-program"> +<h2>From GL_NV_vertex_program<a class="headerlink" href="#from-gl-nv-vertex-program" title="Permalink to this headline">¶</a></h2> +<p>ARL - Address Register Load</p> +<div class="math"> +<p><img src="_images/math/a6a788a4144ea0b8be244aad870806646081b809.png" alt="dst.x = \lfloor src.x\rfloor + +dst.y = \lfloor src.y\rfloor + +dst.z = \lfloor src.z\rfloor + +dst.w = \lfloor src.w\rfloor" /></p> +</div><p>MOV - Move</p> +<div class="math"> +<p><img src="_images/math/723d0548eae0d4f8738fcf051e2e56bce034e7d4.png" alt="dst.x = src.x + +dst.y = src.y + +dst.z = src.z + +dst.w = src.w" /></p> +</div><p>LIT - Light Coefficients</p> +<div class="math"> +<p><img src="_images/math/758e5c32fbcca15fadbbf1ee7cb5967466f056e9.png" alt="dst.x = 1 + +dst.y = max(src.x, 0) + +dst.z = (src.x > 0) ? max(src.y, 0)^{clamp(src.w, -128, 128))} : 0 + +dst.w = 1" /></p> +</div><p>RCP - Reciprocal</p> +<div class="math"> +<p><img src="_images/math/c9bc0e532b3b63ed42567436058b919bc78442ce.png" alt="dst.x = \frac{1}{src.x} + +dst.y = \frac{1}{src.x} + +dst.z = \frac{1}{src.x} + +dst.w = \frac{1}{src.x}" /></p> +</div><p>RSQ - Reciprocal Square Root</p> +<div class="math"> +<p><img src="_images/math/70d1866ff09388f68ff5f0f88719006a59e19187.png" alt="dst.x = \frac{1}{\sqrt{|src.x|}} + +dst.y = \frac{1}{\sqrt{|src.x|}} + +dst.z = \frac{1}{\sqrt{|src.x|}} + +dst.w = \frac{1}{\sqrt{|src.x|}}" /></p> +</div><p>EXP - Approximate Exponential Base 2</p> +<div class="math"> +<p><img src="_images/math/61a735a5ca4687a35d98a8d42c127cb425b16eed.png" alt="dst.x = 2^{\lfloor src.x\rfloor} + +dst.y = src.x - \lfloor src.x\rfloor + +dst.z = 2^{src.x} + +dst.w = 1" /></p> +</div><p>LOG - Approximate Logarithm Base 2</p> +<div class="math"> +<p><img src="_images/math/f71ea96f5550b90a162f1d7a8b754eeb9b0d126e.png" alt="dst.x = \lfloor\log_2{|src.x|}\rfloor + +dst.y = \frac{|src.x|}{2^{\lfloor\log_2{|src.x|}\rfloor}} + +dst.z = \log_2{|src.x|} + +dst.w = 1" /></p> +</div><p>MUL - Multiply</p> +<div class="math"> +<p><img src="_images/math/8d727b11852ddbb13fb91083a0ce71ea2a47306f.png" alt="dst.x = src0.x \times src1.x + +dst.y = src0.y \times src1.y + +dst.z = src0.z \times src1.z + +dst.w = src0.w \times src1.w" /></p> +</div><p>ADD - Add</p> +<div class="math"> +<p><img src="_images/math/419ee673cdf363cbe29df99a84db18bf74b83cc4.png" alt="dst.x = src0.x + src1.x + +dst.y = src0.y + src1.y + +dst.z = src0.z + src1.z + +dst.w = src0.w + src1.w" /></p> +</div><p>DP3 - 3-component Dot Product</p> +<div class="math"> +<p><img src="_images/math/cd11030c4826718fe39618e48ae07d9298184a65.png" alt="dst.x = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + +dst.y = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + +dst.z = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + +dst.w = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z" /></p> +</div><p>DP4 - 4-component Dot Product</p> +<div class="math"> +<p><img src="_images/math/efbae5a733577ba979c4f08fa0e1de5e31953b92.png" alt="dst.x = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src0.w \times src1.w + +dst.y = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src0.w \times src1.w + +dst.z = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src0.w \times src1.w + +dst.w = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src0.w \times src1.w" /></p> +</div><p>DST - Distance Vector</p> +<div class="math"> +<p><img src="_images/math/6d0d5702a6e475d584f295bd4f0fa80a70b70ee5.png" alt="dst.x = 1 + +dst.y = src0.y \times src1.y + +dst.z = src0.z + +dst.w = src1.w" /></p> +</div><p>MIN - Minimum</p> +<div class="math"> +<p><img src="_images/math/73dec9e78c22629aa3379d21ccc96b1a5c5d2dbd.png" alt="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)" /></p> +</div><p>MAX - Maximum</p> +<div class="math"> +<p><img src="_images/math/1ad10aa070bc12ee93fca94040edb8900468ae29.png" alt="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)" /></p> +</div><p>SLT - Set On Less Than</p> +<div class="math"> +<p><img src="_images/math/b1db3ad26718bdcf3d1afeb866f1fc595230786d.png" alt="dst.x = (src0.x < src1.x) ? 1 : 0 + +dst.y = (src0.y < src1.y) ? 1 : 0 + +dst.z = (src0.z < src1.z) ? 1 : 0 + +dst.w = (src0.w < src1.w) ? 1 : 0" /></p> +</div><p>SGE - Set On Greater Equal Than</p> +<div class="math"> +<p><img src="_images/math/bb15ac1bdb0b295273a7c57060899063cf618a95.png" alt="dst.x = (src0.x >= src1.x) ? 1 : 0 + +dst.y = (src0.y >= src1.y) ? 1 : 0 + +dst.z = (src0.z >= src1.z) ? 1 : 0 + +dst.w = (src0.w >= src1.w) ? 1 : 0" /></p> +</div><p>MAD - Multiply And Add</p> +<div class="math"> +<p><img src="_images/math/cb4e90af76c03c927762a3c33e989ce2c41f5be5.png" alt="dst.x = src0.x \times src1.x + src2.x + +dst.y = src0.y \times src1.y + src2.y + +dst.z = src0.z \times src1.z + src2.z + +dst.w = src0.w \times src1.w + src2.w" /></p> +</div><p>SUB - Subtract</p> +<div class="math"> +<p><img src="_images/math/d96d8a97260276b9db5e903a05339b869391856f.png" alt="dst.x = src0.x - src1.x + +dst.y = src0.y - src1.y + +dst.z = src0.z - src1.z + +dst.w = src0.w - src1.w" /></p> +</div><p>LRP - Linear Interpolate</p> +<div class="math"> +<p><img src="_images/math/cf94ae7663599af8dc7ada12a43b33ca5083044a.png" alt="dst.x = src0.x \times (src1.x - src2.x) + src2.x + +dst.y = src0.y \times (src1.y - src2.y) + src2.y + +dst.z = src0.z \times (src1.z - src2.z) + src2.z + +dst.w = src0.w \times (src1.w - src2.w) + src2.w" /></p> +</div><p>CND - Condition</p> +<div class="math"> +<p><img src="_images/math/f9be0a9bff61d950cb768b8d10c66a45377f3124.png" alt="dst.x = (src2.x > 0.5) ? src0.x : src1.x + +dst.y = (src2.y > 0.5) ? src0.y : src1.y + +dst.z = (src2.z > 0.5) ? src0.z : src1.z + +dst.w = (src2.w > 0.5) ? src0.w : src1.w" /></p> +</div><p>DP2A - 2-component Dot Product And Add</p> +<div class="math"> +<p><img src="_images/math/abcd8a9f57fcaecc5e5c14835fa7438b08b4009d.png" alt="dst.x = src0.x \times src1.x + src0.y \times src1.y + src2.x + +dst.y = src0.x \times src1.x + src0.y \times src1.y + src2.x + +dst.z = src0.x \times src1.x + src0.y \times src1.y + src2.x + +dst.w = src0.x \times src1.x + src0.y \times src1.y + src2.x" /></p> +</div><p>FRAC - Fraction</p> +<div class="math"> +<p><img src="_images/math/df45d09eb32da9798269d030845962e4d92e26de.png" alt="dst.x = src.x - \lfloor src.x\rfloor + +dst.y = src.y - \lfloor src.y\rfloor + +dst.z = src.z - \lfloor src.z\rfloor + +dst.w = src.w - \lfloor src.w\rfloor" /></p> +</div><p>CLAMP - Clamp</p> +<div class="math"> +<p><img src="_images/math/56093f3e51016bf4a7784ed66cb8628202f58b2d.png" alt="dst.x = clamp(src0.x, src1.x, src2.x) + +dst.y = clamp(src0.y, src1.y, src2.y) + +dst.z = clamp(src0.z, src1.z, src2.z) + +dst.w = clamp(src0.w, src1.w, src2.w)" /></p> +</div><p>FLR - Floor</p> +<p>This is identical to ARL.</p> +<div class="math"> +<p><img src="_images/math/a6a788a4144ea0b8be244aad870806646081b809.png" alt="dst.x = \lfloor src.x\rfloor + +dst.y = \lfloor src.y\rfloor + +dst.z = \lfloor src.z\rfloor + +dst.w = \lfloor src.w\rfloor" /></p> +</div><p>ROUND - Round</p> +<div class="math"> +<p><img src="_images/math/226c98a475a610bdeb91b4fbf51261cf8721d8f6.png" alt="dst.x = round(src.x) + +dst.y = round(src.y) + +dst.z = round(src.z) + +dst.w = round(src.w)" /></p> +</div><p>EX2 - Exponential Base 2</p> +<div class="math"> +<p><img src="_images/math/0210d258bc676109314169f2dd4320059387500c.png" alt="dst.x = 2^{src.x} + +dst.y = 2^{src.x} + +dst.z = 2^{src.x} + +dst.w = 2^{src.x}" /></p> +</div><p>LG2 - Logarithm Base 2</p> +<div class="math"> +<p><img src="_images/math/1b910bba9c9c6d11618b234335f33413d4f76ee6.png" alt="dst.x = \log_2{src.x} + +dst.y = \log_2{src.x} + +dst.z = \log_2{src.x} + +dst.w = \log_2{src.x}" /></p> +</div><p>POW - Power</p> +<div class="math"> +<p><img src="_images/math/290ad5e39fd561a8616e6eb9abc488c8615b36c7.png" alt="dst.x = src0.x^{src1.x} + +dst.y = src0.x^{src1.x} + +dst.z = src0.x^{src1.x} + +dst.w = src0.x^{src1.x}" /></p> +</div><p>XPD - Cross Product</p> +<div class="math"> +<p><img src="_images/math/751ec5401cf0d30257850404124ddad65cd5c0b2.png" alt="dst.x = src0.y \times src1.z - src1.y \times src0.z + +dst.y = src0.z \times src1.x - src1.z \times src0.x + +dst.z = src0.x \times src1.y - src1.x \times src0.y + +dst.w = 1" /></p> +</div><p>ABS - Absolute</p> +<div class="math"> +<p><img src="_images/math/ad452a9162cb4c5aeb7638cac156cf04155c968a.png" alt="dst.x = |src.x| + +dst.y = |src.y| + +dst.z = |src.z| + +dst.w = |src.w|" /></p> +</div><p>RCC - Reciprocal Clamped</p> +<p>XXX cleanup on aisle three</p> +<div class="math"> +<p><img src="_images/math/f5fe168fde58a4d9fb87b5ef1e8b532f02f3a7cb.png" alt="dst.x = (1 / src.x) > 0 ? clamp(1 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1 / src.x, -1.884467e+019, -5.42101e-020) + +dst.y = (1 / src.x) > 0 ? clamp(1 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1 / src.x, -1.884467e+019, -5.42101e-020) + +dst.z = (1 / src.x) > 0 ? clamp(1 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1 / src.x, -1.884467e+019, -5.42101e-020) + +dst.w = (1 / src.x) > 0 ? clamp(1 / src.x, 5.42101e-020, 1.884467e+019) : clamp(1 / src.x, -1.884467e+019, -5.42101e-020)" /></p> +</div><p>DPH - Homogeneous Dot Product</p> +<div class="math"> +<p><img src="_images/math/2049740526a3bf3b01a0793817069df1d2b217a6.png" alt="dst.x = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src1.w + +dst.y = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src1.w + +dst.z = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src1.w + +dst.w = src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z + src1.w" /></p> +</div><p>COS - Cosine</p> +<div class="math"> +<p><img src="_images/math/ade7e8ec73d74fb03022a40c9a69055c7a0a937b.png" alt="dst.x = \cos{src.x} + +dst.y = \cos{src.x} + +dst.z = \cos{src.x} + +dst.w = \cos{src.w}" /></p> +</div><p>DDX - Derivative Relative To X</p> +<div class="math"> +<p><img src="_images/math/5846a9ccdaf9e3c8c9ffa099acee7e80c7cc0d4b.png" alt="dst.x = partialx(src.x) + +dst.y = partialx(src.y) + +dst.z = partialx(src.z) + +dst.w = partialx(src.w)" /></p> +</div><p>DDY - Derivative Relative To Y</p> +<div class="math"> +<p><img src="_images/math/f89c54b3cac95d930ef70dffa6dc62db5fac05a6.png" alt="dst.x = partialy(src.x) + +dst.y = partialy(src.y) + +dst.z = partialy(src.z) + +dst.w = partialy(src.w)" /></p> +</div><p>KILP - Predicated Discard</p> +<blockquote> +discard</blockquote> +<p>PK2H - Pack Two 16-bit Floats</p> +<blockquote> +TBD</blockquote> +<p>PK2US - Pack Two Unsigned 16-bit Scalars</p> +<blockquote> +TBD</blockquote> +<p>PK4B - Pack Four Signed 8-bit Scalars</p> +<blockquote> +TBD</blockquote> +<p>PK4UB - Pack Four Unsigned 8-bit Scalars</p> +<blockquote> +TBD</blockquote> +<p>RFL - Reflection Vector</p> +<div class="math"> +<p><img src="_images/math/6dfa1d81b7272fac743c04c8f5fbd74bb42639b4.png" alt="dst.x = 2 \times (src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z) / (src0.x \times src0.x + src0.y \times src0.y + src0.z \times src0.z) \times src0.x - src1.x + +dst.y = 2 \times (src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z) / (src0.x \times src0.x + src0.y \times src0.y + src0.z \times src0.z) \times src0.y - src1.y + +dst.z = 2 \times (src0.x \times src1.x + src0.y \times src1.y + src0.z \times src1.z) / (src0.x \times src0.x + src0.y \times src0.y + src0.z \times src0.z) \times src0.z - src1.z + +dst.w = 1" /></p> +</div><p>Considered for removal.</p> +<p>SEQ - Set On Equal</p> +<div class="math"> +<p><img src="_images/math/5eac00cd4b387d141630ace602ed89d9a2ccc0ef.png" alt="dst.x = (src0.x == src1.x) ? 1 : 0 +dst.y = (src0.y == src1.y) ? 1 : 0 +dst.z = (src0.z == src1.z) ? 1 : 0 +dst.w = (src0.w == src1.w) ? 1 : 0" /></p> +</div><p>SFL - Set On False</p> +<div class="math"> +<p><img src="_images/math/15f738543d3cfe86879e953e69536effdc1d97f5.png" alt="dst.x = 0 +dst.y = 0 +dst.z = 0 +dst.w = 0" /></p> +</div><p>Considered for removal.</p> +<p>SGT - Set On Greater Than</p> +<div class="math"> +<p><img src="_images/math/2bbfc816656154cb764d951002e595719a0cfce1.png" alt="dst.x = (src0.x > src1.x) ? 1 : 0 +dst.y = (src0.y > src1.y) ? 1 : 0 +dst.z = (src0.z > src1.z) ? 1 : 0 +dst.w = (src0.w > src1.w) ? 1 : 0" /></p> +</div><p>SIN - Sine</p> +<div class="math"> +<p><img src="_images/math/0e5562f4fdf39c2754c17f761d76dcdb738dd233.png" alt="dst.x = \sin{src.x} + +dst.y = \sin{src.x} + +dst.z = \sin{src.x} + +dst.w = \sin{src.w}" /></p> +</div><p>SLE - Set On Less Equal Than</p> +<div class="math"> +<p><img src="_images/math/3f4ffe13f32660772fc7dbde7b56fff6308b347c.png" alt="dst.x = (src0.x <= src1.x) ? 1 : 0 +dst.y = (src0.y <= src1.y) ? 1 : 0 +dst.z = (src0.z <= src1.z) ? 1 : 0 +dst.w = (src0.w <= src1.w) ? 1 : 0" /></p> +</div><p>SNE - Set On Not Equal</p> +<div class="math"> +<p><img src="_images/math/7a206759bbd06a8ef2385b8b7cf42b07521d36a8.png" alt="dst.x = (src0.x != src1.x) ? 1 : 0 +dst.y = (src0.y != src1.y) ? 1 : 0 +dst.z = (src0.z != src1.z) ? 1 : 0 +dst.w = (src0.w != src1.w) ? 1 : 0" /></p> +</div><p>STR - Set On True</p> +<div class="math"> +<p><img src="_images/math/9a8aa4392d07b8c3fd7f2bc7ddee9eecd87e2c21.png" alt="dst.x = 1 +dst.y = 1 +dst.z = 1 +dst.w = 1" /></p> +</div><p>TEX - Texture Lookup</p> +<blockquote> +TBD</blockquote> +<p>TXD - Texture Lookup with Derivatives</p> +<blockquote> +TBD</blockquote> +<p>TXP - Projective Texture Lookup</p> +<blockquote> +TBD</blockquote> +<p>UP2H - Unpack Two 16-Bit Floats</p> +<blockquote> +<p>TBD</p> +<p>Considered for removal.</p> +</blockquote> +<p>UP2US - Unpack Two Unsigned 16-Bit Scalars</p> +<blockquote> +<p>TBD</p> +<p>Considered for removal.</p> +</blockquote> +<p>UP4B - Unpack Four Signed 8-Bit Values</p> +<blockquote> +<p>TBD</p> +<p>Considered for removal.</p> +</blockquote> +<p>UP4UB - Unpack Four Unsigned 8-Bit Scalars</p> +<blockquote> +<p>TBD</p> +<p>Considered for removal.</p> +</blockquote> +<p>X2D - 2D Coordinate Transformation</p> +<div class="math"> +<p><img src="_images/math/f94a20471877c44c7f623279934018e5c7348e83.png" alt="dst.x = src0.x + src1.x \times src2.x + src1.y \times src2.y +dst.y = src0.y + src1.x \times src2.z + src1.y \times src2.w +dst.z = src0.x + src1.x \times src2.x + src1.y \times src2.y +dst.w = src0.y + src1.x \times src2.z + src1.y \times src2.w" /></p> +</div><p>Considered for removal.</p> +</div> +<div class="section" id="gl-nv-vertex-program2"> +<h2>GL_NV_vertex_program2<a class="headerlink" href="#gl-nv-vertex-program2" title="Permalink to this headline">¶</a></h2> +<p>ARA - Address Register Add</p> +<blockquote> +<p>TBD</p> +<p>Considered for removal.</p> +</blockquote> +<p>ARR - Address Register Load With Round</p> +<div class="math"> +<p><img src="_images/math/226c98a475a610bdeb91b4fbf51261cf8721d8f6.png" alt="dst.x = round(src.x) + +dst.y = round(src.y) + +dst.z = round(src.z) + +dst.w = round(src.w)" /></p> +</div><p>BRA - Branch</p> +<blockquote> +<p>pc = target</p> +<p>Considered for removal.</p> +</blockquote> +<p>CAL - Subroutine Call</p> +<blockquote> +push(pc) +pc = target</blockquote> +<p>RET - Subroutine Call Return</p> +<blockquote> +<p>pc = pop()</p> +<p>Potential restrictions: +times Only occurs at end of function.</p> +</blockquote> +<p>SSG - Set Sign</p> +<div class="math"> +<p><img src="_images/math/096db0cc9a735fa08397a0d940cb96025db3e3c8.png" alt="dst.x = (src.x > 0) ? 1 : (src.x < 0) ? -1 : 0 + +dst.y = (src.y > 0) ? 1 : (src.y < 0) ? -1 : 0 + +dst.z = (src.z > 0) ? 1 : (src.z < 0) ? -1 : 0 + +dst.w = (src.w > 0) ? 1 : (src.w < 0) ? -1 : 0" /></p> +</div><p>CMP - Compare</p> +<div class="math"> +<p><img src="_images/math/53961253955fd2148f7cef66c79f2274c76f1954.png" alt="dst.x = (src0.x < 0) ? src1.x : src2.x + +dst.y = (src0.y < 0) ? src1.y : src2.y + +dst.z = (src0.z < 0) ? src1.z : src2.z + +dst.w = (src0.w < 0) ? src1.w : src2.w" /></p> +</div><p>KIL - Conditional Discard</p> +<div class="math"> +<p><img src="_images/math/ef0c42df6cde68a9c411ff8ce9ad1603b2715daf.png" alt="if (src.x < 0 || src.y < 0 || src.z < 0 || src.w < 0) + discard +endif" /></p> +</div><p>SCS - Sine Cosine</p> +<div class="math"> +<p><img src="_images/math/1ed3a5293ecdad1b4847367fba55be005fe7f6ba.png" alt="dst.x = \cos{src.x} + +dst.y = \sin{src.x} + +dst.z = 0 + +dst.y = 1" /></p> +</div><p>TXB - Texture Lookup With Bias</p> +<blockquote> +TBD</blockquote> +<p>NRM - 3-component Vector Normalise</p> +<div class="math"> +<p><img src="_images/math/a6403ef2be1ec6b8eafb37e12b4e44adf240444e.png" alt="dst.x = src.x / (src.x \times src.x + src.y \times src.y + src.z \times src.z) + +dst.y = src.y / (src.x \times src.x + src.y \times src.y + src.z \times src.z) + +dst.z = src.z / (src.x \times src.x + src.y \times src.y + src.z \times src.z) + +dst.w = 1" /></p> +</div><p>DIV - Divide</p> +<div class="math"> +<p><img src="_images/math/f8d904588ef4d267803f5aee2f5789d9eda5b0e4.png" alt="dst.x = \frac{src0.x}{src1.x} + +dst.y = \frac{src0.y}{src1.y} + +dst.z = \frac{src0.z}{src1.z} + +dst.w = \frac{src0.w}{src1.w}" /></p> +</div><p>DP2 - 2-component Dot Product</p> +<div class="math"> +<p><img src="_images/math/052e6cb10c4892efcc9dfdd69fd3480adbae7bba.png" alt="dst.x = src0.x \times src1.x + src0.y \times src1.y + +dst.y = src0.x \times src1.x + src0.y \times src1.y + +dst.z = src0.x \times src1.x + src0.y \times src1.y + +dst.w = src0.x \times src1.x + src0.y \times src1.y" /></p> +</div><p>TXL - Texture Lookup With LOD</p> +<blockquote> +TBD</blockquote> +<p>BRK - Break</p> +<blockquote> +TBD</blockquote> +<p>IF - If</p> +<blockquote> +TBD</blockquote> +<p>BGNFOR - Begin a For-Loop</p> +<blockquote> +<p>dst.x = floor(src.x) +dst.y = floor(src.y) +dst.z = floor(src.z)</p> +<dl class="docutils"> +<dt>if (dst.y <= 0)</dt> +<dd>pc = [matching ENDFOR] + 1</dd> +</dl> +<p>endif</p> +<dl class="docutils"> +<dt>Note: The destination must be a loop register.</dt> +<dd>The source must be a constant register.</dd> +</dl> +<p>Considered for cleanup / removal.</p> +</blockquote> +<p>REP - Repeat</p> +<blockquote> +TBD</blockquote> +<p>ELSE - Else</p> +<blockquote> +TBD</blockquote> +<p>ENDIF - End If</p> +<blockquote> +TBD</blockquote> +<p>ENDFOR - End a For-Loop</p> +<blockquote> +<p>dst.x = dst.x + dst.z +dst.y = dst.y - 1.0</p> +<dl class="docutils"> +<dt>if (dst.y > 0)</dt> +<dd>pc = [matching BGNFOR instruction] + 1</dd> +</dl> +<p>endif</p> +<p>Note: The destination must be a loop register.</p> +<p>Considered for cleanup / removal.</p> +</blockquote> +<p>ENDREP - End Repeat</p> +<blockquote> +TBD</blockquote> +<p>PUSHA - Push Address Register On Stack</p> +<blockquote> +<p>push(src.x) +push(src.y) +push(src.z) +push(src.w)</p> +<p>Considered for cleanup / removal.</p> +</blockquote> +<p>POPA - Pop Address Register From Stack</p> +<blockquote> +<p>dst.w = pop() +dst.z = pop() +dst.y = pop() +dst.x = pop()</p> +<p>Considered for cleanup / removal.</p> +</blockquote> +</div> +<div class="section" id="gl-nv-gpu-program4"> +<h2>GL_NV_gpu_program4<a class="headerlink" href="#gl-nv-gpu-program4" title="Permalink to this headline">¶</a></h2> +<p>Support for these opcodes indicated by a special pipe capability bit (TBD).</p> +<p>CEIL - Ceiling</p> +<div class="math"> +<p><img src="_images/math/03e47c613e946131569cb8ab9b88ae7b31a7a436.png" alt="dst.x = \lceil src.x\rceil + +dst.y = \lceil src.y\rceil + +dst.z = \lceil src.z\rceil + +dst.w = \lceil src.w\rceil" /></p> +</div><p>I2F - Integer To Float</p> +<div class="math"> +<p><img src="_images/math/fa38e14d5e8d8fcf15c70890e66ae5727443e531.png" alt="dst.x = (float) src.x + +dst.y = (float) src.y + +dst.z = (float) src.z + +dst.w = (float) src.w" /></p> +</div><p>NOT - Bitwise Not</p> +<div class="math"> +<p><img src="_images/math/ae28f3acd0883602c612198d7bcd7fc277972f31.png" alt="dst.x = ~src.x + +dst.y = ~src.y + +dst.z = ~src.z + +dst.w = ~src.w" /></p> +</div><p>TRUNC - Truncate</p> +<p>XXX how is this different from floor?</p> +<div class="math"> +<p><img src="_images/math/4a413dd124842171577a13c5de2f45c92f1a0c59.png" alt="dst.x = trunc(src.x) + +dst.y = trunc(src.y) + +dst.z = trunc(src.z) + +dst.w = trunc(src.w)" /></p> +</div><p>SHL - Shift Left</p> +<div class="math"> +<p><img src="_images/math/6d8f34db37f5d0909f568cbd49dbb9bbd376629d.png" alt="dst.x = src0.x << src1.x + +dst.y = src0.y << src1.x + +dst.z = src0.z << src1.x + +dst.w = src0.w << src1.x" /></p> +</div><p>SHR - Shift Right</p> +<div class="math"> +<p><img src="_images/math/8bb711dcf8af2b6a34bd4cb19311c1c2c445ef5e.png" alt="dst.x = src0.x >> src1.x + +dst.y = src0.y >> src1.x + +dst.z = src0.z >> src1.x + +dst.w = src0.w >> src1.x" /></p> +</div><p>AND - Bitwise And</p> +<div class="math"> +<p><img src="_images/math/a37f2da4dd31c01e7c3afd0adab9bdf27c9d4805.png" alt="dst.x = src0.x & src1.x + +dst.y = src0.y & src1.y + +dst.z = src0.z & src1.z + +dst.w = src0.w & src1.w" /></p> +</div><p>OR - Bitwise Or</p> +<div class="math"> +<p><img src="_images/math/84549dcb2fc79ba332fa86d8b6bdac239d32097f.png" alt="dst.x = src0.x | src1.x + +dst.y = src0.y | src1.y + +dst.z = src0.z | src1.z + +dst.w = src0.w | src1.w" /></p> +</div><p>MOD - Modulus</p> +<div class="math"> +<p><img src="_images/math/10d8720201a3a554b1610687157a80fae1871f6d.png" alt="dst.x = src0.x \bmod src1.x + +dst.y = src0.y \bmod src1.y + +dst.z = src0.z \bmod src1.z + +dst.w = src0.w \bmod src1.w" /></p> +</div><p>XOR - Bitwise Xor</p> +<div class="math"> +<p><img src="_images/math/0f7e82c35f1b87f2d11da3fbc639085a54a5e7ec.png" alt="dst.x = src0.x ^ src1.x + +dst.y = src0.y ^ src1.y + +dst.z = src0.z ^ src1.z + +dst.w = src0.w ^ src1.w" /></p> +</div><p>SAD - Sum Of Absolute Differences</p> +<div class="math"> +<p><img src="_images/math/a4a04906e15ff687e62dcad0046baa9ae05eabb5.png" alt="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" /></p> +</div><p>TXF - Texel Fetch</p> +<blockquote> +TBD</blockquote> +<p>TXQ - Texture Size Query</p> +<blockquote> +TBD</blockquote> +<p>CONT - Continue</p> +<blockquote> +TBD</blockquote> +</div> +<div class="section" id="gl-nv-geometry-program4"> +<h2>GL_NV_geometry_program4<a class="headerlink" href="#gl-nv-geometry-program4" title="Permalink to this headline">¶</a></h2> +<p>EMIT - Emit</p> +<blockquote> +TBD</blockquote> +<p>ENDPRIM - End Primitive</p> +<blockquote> +TBD</blockquote> +</div> +<div class="section" id="glsl"> +<h2>GLSL<a class="headerlink" href="#glsl" title="Permalink to this headline">¶</a></h2> +<p>BGNLOOP - Begin a Loop</p> +<blockquote> +TBD</blockquote> +<p>BGNSUB - Begin Subroutine</p> +<blockquote> +TBD</blockquote> +<p>ENDLOOP - End a Loop</p> +<blockquote> +TBD</blockquote> +<p>ENDSUB - End Subroutine</p> +<blockquote> +TBD</blockquote> +<p>NOP - No Operation</p> +<blockquote> +Do nothing.</blockquote> +<p>NRM4 - 4-component Vector Normalise</p> +<div class="math"> +<p><img src="_images/math/740c183de3654a7e7ee772a640badd3b2844da81.png" alt="dst.x = \frac{src.x}{src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w} + +dst.y = \frac{src.y}{src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w} + +dst.z = \frac{src.z}{src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w} + +dst.w = \frac{src.w}{src.x \times src.x + src.y \times src.y + src.z \times src.z + src.w \times src.w}" /></p> +</div></div> +<div class="section" id="ps-2-x"> +<h2>ps_2_x<a class="headerlink" href="#ps-2-x" title="Permalink to this headline">¶</a></h2> +<p>CALLNZ - Subroutine Call If Not Zero</p> +<blockquote> +TBD</blockquote> +<p>IFC - If</p> +<blockquote> +TBD</blockquote> +<p>BREAKC - Break Conditional</p> +<blockquote> +TBD</blockquote> +</div> +</div> +<div class="section" id="explanation-of-symbols-used"> +<h1>Explanation of symbols used<a class="headerlink" href="#explanation-of-symbols-used" title="Permalink to this headline">¶</a></h1> +<div class="section" id="functions"> +<h2>Functions<a class="headerlink" href="#functions" title="Permalink to this headline">¶</a></h2> +<blockquote> +<p><img class="math" src="_images/math/49428192d366caf373c0af3c3261687f12b4c883.png" alt="|x|"/> Absolute value of <cite>x</cite>.</p> +<p><img class="math" src="_images/math/1a7cd7095a9b123f81967d8d3b14d1e02b0174e7.png" alt="\lceil x \rceil"/> Ceiling of <cite>x</cite>.</p> +<dl class="docutils"> +<dt>clamp(x,y,z) Clamp x between y and z.</dt> +<dd>(x < y) ? y : (x > z) ? z : x</dd> +</dl> +<p><img class="math" src="_images/math/441416e660d25335f27e55334ac2a06e51541c97.png" alt="\lfloor x\rfloor"/> Floor of <cite>x</cite>.</p> +<p><img class="math" src="_images/math/1ce288a883e98c3d1027d27f6246e7d3fdc4d78c.png" alt="\log_2{x}"/> Logarithm of <cite>x</cite>, base 2.</p> +<dl class="docutils"> +<dt>max(x,y) Maximum of x and y.</dt> +<dd>(x > y) ? x : y</dd> +<dt>min(x,y) Minimum of x and y.</dt> +<dd>(x < y) ? x : y</dd> +</dl> +<p>partialx(x) Derivative of x relative to fragment’s X.</p> +<p>partialy(x) Derivative of x relative to fragment’s Y.</p> +<p>pop() Pop from stack.</p> +<p><img class="math" src="_images/math/8f9af910fe749481919573c0dd2b132118f19d19.png" alt="x^y"/> <cite>x</cite> to the power <cite>y</cite>.</p> +<p>push(x) Push x on stack.</p> +<p>round(x) Round x.</p> +<p>trunc(x) Truncate x.</p> +</blockquote> +</div> +<div class="section" id="keywords"> +<h2>Keywords<a class="headerlink" href="#keywords" title="Permalink to this headline">¶</a></h2> +<blockquote> +<p>discard Discard fragment.</p> +<p>dst First destination register.</p> +<p>dst0 First destination register.</p> +<p>pc Program counter.</p> +<p>src First source register.</p> +<p>src0 First source register.</p> +<p>src1 Second source register.</p> +<p>src2 Third source register.</p> +<p>target Label of target instruction.</p> +</blockquote> +</div> +</div> +<div class="section" id="other-tokens"> +<h1>Other tokens<a class="headerlink" href="#other-tokens" title="Permalink to this headline">¶</a></h1> +<div class="section" id="declaration-semantic"> +<h2>Declaration Semantic<a class="headerlink" href="#declaration-semantic" title="Permalink to this headline">¶</a></h2> +<blockquote> +<p>Follows Declaration token if Semantic bit is set.</p> +<p>Since its purpose is to link a shader with other stages of the pipeline, +it is valid to follow only those Declaration tokens that declare a register +either in INPUT or OUTPUT file.</p> +<p>SemanticName field contains the semantic name of the register being declared. +There is no default value.</p> +<p>SemanticIndex is an optional subscript that can be used to distinguish +different register declarations with the same semantic name. The default value +is 0.</p> +<p>The meanings of the individual semantic names are explained in the following +sections.</p> +</blockquote> +<div class="section" id="face"> +<h3>FACE<a class="headerlink" href="#face" title="Permalink to this headline">¶</a></h3> +<blockquote> +<p>Valid only in a fragment shader INPUT declaration.</p> +<p>FACE.x is negative when the primitive is back facing. FACE.x is positive +when the primitive is front facing.</p> +</blockquote> +</div> +</div> </div> @@ -59,6 +876,31 @@ used by all drivers.</p> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> + <h3><a href="index.html">Table Of Contents</a></h3> + <ul> +<li><a class="reference external" href="">TGSI</a><ul> +<li><a class="reference external" href="#from-gl-nv-vertex-program">From GL_NV_vertex_program</a></li> +<li><a class="reference external" href="#gl-nv-vertex-program2">GL_NV_vertex_program2</a></li> +<li><a class="reference external" href="#gl-nv-gpu-program4">GL_NV_gpu_program4</a></li> +<li><a class="reference external" href="#gl-nv-geometry-program4">GL_NV_geometry_program4</a></li> +<li><a class="reference external" href="#glsl">GLSL</a></li> +<li><a class="reference external" href="#ps-2-x">ps_2_x</a></li> +</ul> +</li> +<li><a class="reference external" href="#explanation-of-symbols-used">Explanation of symbols used</a><ul> +<li><a class="reference external" href="#functions">Functions</a></li> +<li><a class="reference external" href="#keywords">Keywords</a></li> +</ul> +</li> +<li><a class="reference external" href="#other-tokens">Other tokens</a><ul> +<li><a class="reference external" href="#declaration-semantic">Declaration Semantic</a><ul> +<li><a class="reference external" href="#face">FACE</a></li> +</ul> +</li> +</ul> +</li> +</ul> + <h4>Previous topic</h4> <p class="topless"><a href="intro.html" title="previous chapter">Introduction</a></p> |