From 6dc85575000127630489b407c50a4b3ea87c9acb Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Thu, 17 Jul 2003 13:43:59 +0000 Subject: Merge Jose's documentation and core Mesa changes from embedded branch --- src/mesa/main/eval.c | 173 +++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 169 insertions(+), 4 deletions(-) (limited to 'src/mesa/main/eval.c') diff --git a/src/mesa/main/eval.c b/src/mesa/main/eval.c index 03d779e894..314ecf0491 100644 --- a/src/mesa/main/eval.c +++ b/src/mesa/main/eval.c @@ -200,8 +200,8 @@ get_2d_map( GLcontext *ctx, GLenum target ) /* * Copy 1-parametric evaluator control points from user-specified * memory space to a buffer of contiguous control points. - * Input: see glMap1f for details - * Return: pointer to buffer of contiguous control points or NULL if out + * \param see glMap1f for details + * \return pointer to buffer of contiguous control points or NULL if out * of memory. */ GLfloat *_mesa_copy_map_points1f( GLenum target, GLint ustride, GLint uorder, @@ -255,8 +255,8 @@ GLfloat *_mesa_copy_map_points1d( GLenum target, GLint ustride, GLint uorder, * Additional memory is allocated to be used by the horner and * de Casteljau evaluation schemes. * - * Input: see glMap2f for details - * Return: pointer to buffer of contiguous control points or NULL if out + * \param see glMap2f for details + * \return pointer to buffer of contiguous control points or NULL if out * of memory. */ GLfloat *_mesa_copy_map_points2f( GLenum target, @@ -795,3 +795,168 @@ _mesa_MapGrid2d( GLint un, GLdouble u1, GLdouble u2, _mesa_MapGrid2f( un, (GLfloat) u1, (GLfloat) u2, vn, (GLfloat) v1, (GLfloat) v2 ); } + + + +/**********************************************************************/ +/***** Initialization *****/ +/**********************************************************************/ + +/** + * Initialize a 1-D evaluator map. + */ +static void +init_1d_map( struct gl_1d_map *map, int n, const float *initial ) +{ + map->Order = 1; + map->u1 = 0.0; + map->u2 = 1.0; + map->Points = (GLfloat *) MALLOC(n * sizeof(GLfloat)); + if (map->Points) { + GLint i; + for (i=0;iPoints[i] = initial[i]; + } +} + + +/** + * Initialize a 2-D evaluator map + */ +static void +init_2d_map( struct gl_2d_map *map, int n, const float *initial ) +{ + map->Uorder = 1; + map->Vorder = 1; + map->u1 = 0.0; + map->u2 = 1.0; + map->v1 = 0.0; + map->v2 = 1.0; + map->Points = (GLfloat *) MALLOC(n * sizeof(GLfloat)); + if (map->Points) { + GLint i; + for (i=0;iPoints[i] = initial[i]; + } +} + + +void _mesa_init_eval( GLcontext *ctx ) +{ + int i; + + /* Evaluators group */ + ctx->Eval.Map1Color4 = GL_FALSE; + ctx->Eval.Map1Index = GL_FALSE; + ctx->Eval.Map1Normal = GL_FALSE; + ctx->Eval.Map1TextureCoord1 = GL_FALSE; + ctx->Eval.Map1TextureCoord2 = GL_FALSE; + ctx->Eval.Map1TextureCoord3 = GL_FALSE; + ctx->Eval.Map1TextureCoord4 = GL_FALSE; + ctx->Eval.Map1Vertex3 = GL_FALSE; + ctx->Eval.Map1Vertex4 = GL_FALSE; + MEMSET(ctx->Eval.Map1Attrib, 0, sizeof(ctx->Eval.Map1Attrib)); + ctx->Eval.Map2Color4 = GL_FALSE; + ctx->Eval.Map2Index = GL_FALSE; + ctx->Eval.Map2Normal = GL_FALSE; + ctx->Eval.Map2TextureCoord1 = GL_FALSE; + ctx->Eval.Map2TextureCoord2 = GL_FALSE; + ctx->Eval.Map2TextureCoord3 = GL_FALSE; + ctx->Eval.Map2TextureCoord4 = GL_FALSE; + ctx->Eval.Map2Vertex3 = GL_FALSE; + ctx->Eval.Map2Vertex4 = GL_FALSE; + MEMSET(ctx->Eval.Map2Attrib, 0, sizeof(ctx->Eval.Map2Attrib)); + ctx->Eval.AutoNormal = GL_FALSE; + ctx->Eval.MapGrid1un = 1; + ctx->Eval.MapGrid1u1 = 0.0; + ctx->Eval.MapGrid1u2 = 1.0; + ctx->Eval.MapGrid2un = 1; + ctx->Eval.MapGrid2vn = 1; + ctx->Eval.MapGrid2u1 = 0.0; + ctx->Eval.MapGrid2u2 = 1.0; + ctx->Eval.MapGrid2v1 = 0.0; + ctx->Eval.MapGrid2v2 = 1.0; + + /* Evaluator data */ + { + static GLfloat vertex[4] = { 0.0, 0.0, 0.0, 1.0 }; + static GLfloat normal[3] = { 0.0, 0.0, 1.0 }; + static GLfloat index[1] = { 1.0 }; + static GLfloat color[4] = { 1.0, 1.0, 1.0, 1.0 }; + static GLfloat texcoord[4] = { 0.0, 0.0, 0.0, 1.0 }; + static GLfloat attrib[4] = { 0.0, 0.0, 0.0, 1.0 }; + + init_1d_map( &ctx->EvalMap.Map1Vertex3, 3, vertex ); + init_1d_map( &ctx->EvalMap.Map1Vertex4, 4, vertex ); + init_1d_map( &ctx->EvalMap.Map1Index, 1, index ); + init_1d_map( &ctx->EvalMap.Map1Color4, 4, color ); + init_1d_map( &ctx->EvalMap.Map1Normal, 3, normal ); + init_1d_map( &ctx->EvalMap.Map1Texture1, 1, texcoord ); + init_1d_map( &ctx->EvalMap.Map1Texture2, 2, texcoord ); + init_1d_map( &ctx->EvalMap.Map1Texture3, 3, texcoord ); + init_1d_map( &ctx->EvalMap.Map1Texture4, 4, texcoord ); + for (i = 0; i < 16; i++) + init_1d_map( ctx->EvalMap.Map1Attrib + i, 4, attrib ); + + init_2d_map( &ctx->EvalMap.Map2Vertex3, 3, vertex ); + init_2d_map( &ctx->EvalMap.Map2Vertex4, 4, vertex ); + init_2d_map( &ctx->EvalMap.Map2Index, 1, index ); + init_2d_map( &ctx->EvalMap.Map2Color4, 4, color ); + init_2d_map( &ctx->EvalMap.Map2Normal, 3, normal ); + init_2d_map( &ctx->EvalMap.Map2Texture1, 1, texcoord ); + init_2d_map( &ctx->EvalMap.Map2Texture2, 2, texcoord ); + init_2d_map( &ctx->EvalMap.Map2Texture3, 3, texcoord ); + init_2d_map( &ctx->EvalMap.Map2Texture4, 4, texcoord ); + for (i = 0; i < 16; i++) + init_2d_map( ctx->EvalMap.Map2Attrib + i, 4, attrib ); + } +} + + +void _mesa_free_eval_data( GLcontext *ctx ) +{ + int i; + + /* Free evaluator data */ + if (ctx->EvalMap.Map1Vertex3.Points) + FREE( ctx->EvalMap.Map1Vertex3.Points ); + if (ctx->EvalMap.Map1Vertex4.Points) + FREE( ctx->EvalMap.Map1Vertex4.Points ); + if (ctx->EvalMap.Map1Index.Points) + FREE( ctx->EvalMap.Map1Index.Points ); + if (ctx->EvalMap.Map1Color4.Points) + FREE( ctx->EvalMap.Map1Color4.Points ); + if (ctx->EvalMap.Map1Normal.Points) + FREE( ctx->EvalMap.Map1Normal.Points ); + if (ctx->EvalMap.Map1Texture1.Points) + FREE( ctx->EvalMap.Map1Texture1.Points ); + if (ctx->EvalMap.Map1Texture2.Points) + FREE( ctx->EvalMap.Map1Texture2.Points ); + if (ctx->EvalMap.Map1Texture3.Points) + FREE( ctx->EvalMap.Map1Texture3.Points ); + if (ctx->EvalMap.Map1Texture4.Points) + FREE( ctx->EvalMap.Map1Texture4.Points ); + for (i = 0; i < 16; i++) + FREE((ctx->EvalMap.Map1Attrib[i].Points)); + + if (ctx->EvalMap.Map2Vertex3.Points) + FREE( ctx->EvalMap.Map2Vertex3.Points ); + if (ctx->EvalMap.Map2Vertex4.Points) + FREE( ctx->EvalMap.Map2Vertex4.Points ); + if (ctx->EvalMap.Map2Index.Points) + FREE( ctx->EvalMap.Map2Index.Points ); + if (ctx->EvalMap.Map2Color4.Points) + FREE( ctx->EvalMap.Map2Color4.Points ); + if (ctx->EvalMap.Map2Normal.Points) + FREE( ctx->EvalMap.Map2Normal.Points ); + if (ctx->EvalMap.Map2Texture1.Points) + FREE( ctx->EvalMap.Map2Texture1.Points ); + if (ctx->EvalMap.Map2Texture2.Points) + FREE( ctx->EvalMap.Map2Texture2.Points ); + if (ctx->EvalMap.Map2Texture3.Points) + FREE( ctx->EvalMap.Map2Texture3.Points ); + if (ctx->EvalMap.Map2Texture4.Points) + FREE( ctx->EvalMap.Map2Texture4.Points ); + for (i = 0; i < 16; i++) + FREE((ctx->EvalMap.Map2Attrib[i].Points)); +} -- cgit v1.2.3