1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Mesa 3-D graphics library 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Version: 7.5 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright (C) 2009 VMware, Inc. All Rights Reserved. 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining a 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * copy of this software and associated documentation files (the "Software"), 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * to deal in the Software without restriction, including without limitation 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the rights to use, copy, modify, merge, publish, distribute, sublicense, 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * and/or sell copies of the Software, and to permit persons to whom the 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Software is furnished to do so, subject to the following conditions: 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice shall be included 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * in all copies or substantial portions of the Software. 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#ifndef S_SPAN_H 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define S_SPAN_H 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "main/config.h" 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "main/glheader.h" 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "main/mtypes.h" 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "swrast/s_chan.h" 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "swrast/swrast.h" 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstruct gl_context; 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstruct gl_renderbuffer; 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * \defgroup SpanFlags 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Special bitflags to describe span data. 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * In general, the point/line/triangle functions interpolate/emit the 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * attributes specified by swrast->_ActiveAttribs (i.e. FRAT_BIT_* values). 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Some things don't fit into that, though, so we have these flags. 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/*@{*/ 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define SPAN_RGBA 0x01 /**< interpMask and arrayMask */ 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define SPAN_Z 0x02 /**< interpMask and arrayMask */ 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define SPAN_FLAT 0x04 /**< interpMask: flat shading? */ 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define SPAN_XY 0x08 /**< array.x[], y[] valid? */ 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define SPAN_MASK 0x10 /**< was array.mask[] filled in by caller? */ 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define SPAN_LAMBDA 0x20 /**< array.lambda[] valid? */ 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define SPAN_COVERAGE 0x40 /**< array.coverage[] valid? */ 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/*@}*/ 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * \sw_span_arrays 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * \brief Arrays of fragment values. 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * These will either be computed from the span x/xStep values or 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * filled in by glDraw/CopyPixels, etc. 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * These arrays are separated out of sw_span to conserve memory. 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgtypedef struct sw_span_arrays 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** Per-fragment attributes (indexed by FRAG_ATTRIB_* tokens) */ 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* XXX someday look at transposing first two indexes for better memory 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * access pattern. 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat attribs[FRAG_ATTRIB_MAX][SWRAST_MAX_WIDTH][4]; 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** This mask indicates which fragments are alive or culled */ 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLubyte mask[SWRAST_MAX_WIDTH]; 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLenum ChanType; /**< Color channel type, GL_UNSIGNED_BYTE, GL_FLOAT */ 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** Attribute arrays that don't fit into attribs[] array above */ 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /*@{*/ 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLubyte rgba8[SWRAST_MAX_WIDTH][4]; 85f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLushort rgba16[SWRAST_MAX_WIDTH][4]; 86f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLchan (*rgba)[4]; /** either == rgba8 or rgba16 */ 87f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLint x[SWRAST_MAX_WIDTH]; /**< fragment X coords */ 88f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLint y[SWRAST_MAX_WIDTH]; /**< fragment Y coords */ 89f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint z[SWRAST_MAX_WIDTH]; /**< fragment Z coords */ 90f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint index[SWRAST_MAX_WIDTH]; /**< Color indexes */ 91f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat lambda[MAX_TEXTURE_COORD_UNITS][SWRAST_MAX_WIDTH]; /**< Texture LOD */ 92f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat coverage[SWRAST_MAX_WIDTH]; /**< Fragment coverage for AA/smoothing */ 93f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /*@}*/ 94f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} SWspanarrays; 95f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 96f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 97f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 98f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The SWspan structure describes the colors, Z, fogcoord, texcoords, 99f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * etc for either a horizontal run or an array of independent pixels. 100f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * We can either specify a base/step to indicate interpolated values, or 101f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * fill in explicit arrays of values. The interpMask and arrayMask bitfields 102f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * indicate which attributes are active interpolants or arrays, respectively. 103f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 104f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * It would be interesting to experiment with multiprocessor rasterization 105f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * with this structure. The triangle rasterizer could simply emit a 106f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * stream of these structures which would be consumed by one or more 107f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * span-processing threads which could run in parallel. 108f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 109f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgtypedef struct sw_span 110f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 111f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** Coord of first fragment in horizontal span/run */ 112f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLint x, y; 113f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 114f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** Number of fragments in the span */ 115f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint end; 116f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 117f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** for clipping left edge of spans */ 118f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint leftClip; 119f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 120f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** This flag indicates that mask[] array is effectively filled with ones */ 121f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLboolean writeAll; 122f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 123f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** either GL_POLYGON, GL_LINE, GL_POLYGON, GL_BITMAP */ 124f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLenum primitive; 125f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 126f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** 0 = front-facing span, 1 = back-facing span (for two-sided stencil) */ 127f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint facing; 128f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 129f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** 130f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * This bitmask (of \link SpanFlags SPAN_* flags\endlink) indicates 131f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * which of the attrStart/StepX/StepY variables are relevant. 132f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 133f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLbitfield interpMask; 134f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 135f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** Fragment attribute interpolants */ 136f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat attrStart[FRAG_ATTRIB_MAX][4]; /**< initial value */ 137f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat attrStepX[FRAG_ATTRIB_MAX][4]; /**< dvalue/dx */ 138f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat attrStepY[FRAG_ATTRIB_MAX][4]; /**< dvalue/dy */ 139f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 140f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* XXX the rest of these will go away eventually... */ 141f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 142f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* For horizontal spans, step is the partial derivative wrt X. 143f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * For lines, step is the delta from one fragment to the next. 144f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 145f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfixed red, redStep; 146f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfixed green, greenStep; 147f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfixed blue, blueStep; 148f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfixed alpha, alphaStep; 149f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfixed index, indexStep; 150f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfixed z, zStep; /**< XXX z should probably be GLuint */ 151f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfixed intTex[2], intTexStep[2]; /**< (s,t) for unit[0] only */ 152f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 153f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** 154f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * This bitmask (of \link SpanFlags SPAN_* flags\endlink) indicates 155f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * which of the fragment arrays in the span_arrays struct are relevant. 156f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 157f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLbitfield arrayMask; 158f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 159f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** Mask of FRAG_BIT_x bits */ 160f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLbitfield64 arrayAttribs; 161f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 162f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /** 163f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * We store the arrays of fragment values in a separate struct so 164f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * that we can allocate sw_span structs on the stack without using 165f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * a lot of memory. The span_arrays struct is about 1.4MB while the 166f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * sw_span struct is only about 512 bytes. 167f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 168f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org SWspanarrays *array; 169f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} SWspan; 170f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 171f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 172f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 173f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define INIT_SPAN(S, PRIMITIVE) \ 174f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgdo { \ 175f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (S).primitive = (PRIMITIVE); \ 176f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (S).interpMask = 0x0; \ 177f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (S).arrayMask = 0x0; \ 178f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (S).arrayAttribs = 0x0; \ 179f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (S).end = 0; \ 180f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (S).leftClip = 0; \ 181f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (S).facing = 0; \ 182f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (S).array = SWRAST_CONTEXT(ctx)->SpanArrays; \ 183f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} while (0) 184f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 185f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 186f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 187f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgextern void 188f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_swrast_span_default_attribs(struct gl_context *ctx, SWspan *span); 189f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 190f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgextern void 191f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_swrast_span_interpolate_z( const struct gl_context *ctx, SWspan *span ); 192f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 193f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgextern GLfloat 194f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_swrast_compute_lambda(GLfloat dsdx, GLfloat dsdy, GLfloat dtdx, GLfloat dtdy, 195f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat dqdx, GLfloat dqdy, GLfloat texW, GLfloat texH, 196f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLfloat s, GLfloat t, GLfloat q, GLfloat invQ); 197f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 198f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 199f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgextern void 200f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_swrast_write_rgba_span( struct gl_context *ctx, SWspan *span); 201f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 202f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 203f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgextern void 204f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_swrast_read_rgba_span(struct gl_context *ctx, struct gl_renderbuffer *rb, 205f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint n, GLint x, GLint y, GLvoid *rgba); 206f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 207f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgextern void 208f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_swrast_put_row(struct gl_context *ctx, struct gl_renderbuffer *rb, 209f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLenum datatype, 210f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GLuint count, GLint x, GLint y, 211f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const void *values, const GLubyte *mask); 212f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 213f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgextern void * 214f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org_swrast_get_dest_rgba(struct gl_context *ctx, struct gl_renderbuffer *rb, 215f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org SWspan *span); 216f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 217f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#endif 218