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Diffstat (limited to 'src/gallium/docs/source/tgsi.rst')
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 187 |
1 files changed, 180 insertions, 7 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index ebee4902b0..3e702ceeda 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -516,8 +516,11 @@ SEQ - Set On Equal .. math:: 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 @@ -526,8 +529,11 @@ SFL - Set On False .. math:: dst.x = 0 + dst.y = 0 + dst.z = 0 + dst.w = 0 Considered for removal. @@ -537,8 +543,11 @@ SGT - Set On Greater Than .. math:: 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 @@ -560,8 +569,11 @@ SLE - Set On Less Equal Than .. math:: 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 @@ -570,8 +582,11 @@ SNE - Set On Not Equal .. math:: 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 @@ -580,8 +595,11 @@ STR - Set On True .. math:: dst.x = 1 + dst.y = 1 + dst.z = 1 + dst.w = 1 @@ -629,8 +647,11 @@ X2D - 2D Coordinate Transformation .. math:: 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 Considered for removal. @@ -979,13 +1000,13 @@ XOR - Bitwise Xor .. math:: - dst.x = src0.x ^ src1.x + dst.x = src0.x \oplus src1.x - dst.y = src0.y ^ src1.y + dst.y = src0.y \oplus src1.y - dst.z = src0.z ^ src1.z + dst.z = src0.z \oplus src1.z - dst.w = src0.w ^ src1.w + dst.w = src0.w \oplus src1.w SAD - Sum Of Absolute Differences @@ -1090,6 +1111,117 @@ BREAKC - Break Conditional TBD +Double Opcodes +^^^^^^^^^^^^^^^ + +DADD - Add Double + +.. math:: + + dst.xy = src0.xy + src1.xy + + dst.zw = src0.zw + src1.zw + + +DDIV - Divide Double + +.. math:: + + dst.xy = src0.xy / src1.xy + + dst.zw = src0.zw / src1.zw + +DSEQ - Set Double on Equal + +.. math:: + + dst.xy = src0.xy == src1.xy ? 1.0F : 0.0F + + dst.zw = src0.zw == src1.zw ? 1.0F : 0.0F + +DSLT - Set Double on Less than + +.. math:: + + dst.xy = src0.xy < src1.xy ? 1.0F : 0.0F + + dst.zw = src0.zw < src1.zw ? 1.0F : 0.0F + +DFRAC - Double Fraction + +.. math:: + + dst.xy = src.xy - \lfloor src.xy\rfloor + + dst.zw = src.zw - \lfloor src.zw\rfloor + + +DFRACEXP - Convert Double Number to Fractional and Integral Components + +.. math:: + + dst0.xy = frexp(src.xy, dst1.xy) + + dst0.zw = frexp(src.zw, dst1.zw) + +DLDEXP - Multiple Double Number by Integral Power of 2 + +.. math:: + + dst.xy = ldexp(src0.xy, src1.xy) + + dst.zw = ldexp(src0.zw, src1.zw) + +DMIN - Minimum Double + +.. math:: + + dst.xy = min(src0.xy, src1.xy) + + dst.zw = min(src0.zw, src1.zw) + +DMAX - Maximum Double + +.. math:: + + dst.xy = max(src0.xy, src1.xy) + + dst.zw = max(src0.zw, src1.zw) + +DMUL - Multiply Double + +.. math:: + + dst.xy = src0.xy \times src1.xy + + dst.zw = src0.zw \times src1.zw + + +DMAD - Multiply And Add Doubles + +.. math:: + + dst.xy = src0.xy \times src1.xy + src2.xy + + dst.zw = src0.zw \times src1.zw + src2.zw + + +DRCP - Reciprocal Double + +.. math:: + + dst.xy = \frac{1}{src.xy} + + dst.zw = \frac{1}{src.zw} + +DSQRT - Square root double + +.. math:: + + dst.xy = \sqrt{src.xy} + + dst.zw = \sqrt{src.zw} + Explanation of symbols used ------------------------------ @@ -1187,9 +1319,8 @@ are the Cartesian coordinates, and ``w`` is the homogenous coordinate and used for the perspective divide, if enabled. As a vertex shader output, position should be scaled to the viewport. When -used in fragment shaders, position will --- - -XXX --- wait a minute. Should position be in [0,1] for x and y? +used in fragment shaders, position will be in window coordinates. The convention +used depends on the FS_COORD_ORIGIN and FS_COORD_PIXEL_CENTER properties. XXX additionally, is there a way to configure the perspective divide? it's accelerated on most chipsets AFAIK... @@ -1268,3 +1399,45 @@ TGSI_SEMANTIC_EDGEFLAG """""""""""""""""""""" XXX no clue + + +Properties +^^^^^^^^^^^^^^^^^^^^^^^^ + + + Properties are general directives that apply to the whole TGSI program. + +FS_COORD_ORIGIN +""""""""""""""" + +Specifies the fragment shader TGSI_SEMANTIC_POSITION coordinate origin. +The default value is UPPER_LEFT. + +If UPPER_LEFT, the position will be (0,0) at the upper left corner and +increase downward and rightward. +If LOWER_LEFT, the position will be (0,0) at the lower left corner and +increase upward and rightward. + +OpenGL defaults to LOWER_LEFT, and is configurable with the +GL_ARB_fragment_coord_conventions extension. + +DirectX 9/10 use UPPER_LEFT. + +FS_COORD_PIXEL_CENTER +""""""""""""""""""""" + +Specifies the fragment shader TGSI_SEMANTIC_POSITION pixel center convention. +The default value is HALF_INTEGER. + +If HALF_INTEGER, the fractionary part of the position will be 0.5 +If INTEGER, the fractionary part of the position will be 0.0 + +Note that this does not affect the set of fragments generated by +rasterization, which is instead controlled by gl_rasterization_rules in the +rasterizer. + +OpenGL defaults to HALF_INTEGER, and is configurable with the +GL_ARB_fragment_coord_conventions extension. + +DirectX 9 uses INTEGER. +DirectX 10 uses HALF_INTEGER. |