From 807c6931fe683fd844ceec1b023232181e6aae03 Mon Sep 17 00:00:00 2001 From: marha Date: Tue, 28 Dec 2010 16:10:20 +0000 Subject: xserver and mesa git update 28-12-2010 --- mesalib/src/mesa/tnl/t_vb_texgen.c | 1218 ++++++++++++++++++------------------ 1 file changed, 609 insertions(+), 609 deletions(-) (limited to 'mesalib/src/mesa/tnl/t_vb_texgen.c') diff --git a/mesalib/src/mesa/tnl/t_vb_texgen.c b/mesalib/src/mesa/tnl/t_vb_texgen.c index 950e0f54e..228808461 100644 --- a/mesalib/src/mesa/tnl/t_vb_texgen.c +++ b/mesalib/src/mesa/tnl/t_vb_texgen.c @@ -1,609 +1,609 @@ -/* - * Mesa 3-D graphics library - * Version: 6.5 - * - * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - * Authors: - * Brian Paul - * Keith Whitwell - */ - -/* - * Regarding GL_NV_texgen_reflection: - * - * Portions of this software may use or implement intellectual - * property owned and licensed by NVIDIA Corporation. NVIDIA disclaims - * any and all warranties with respect to such intellectual property, - * including any use thereof or modifications thereto. - */ - -#include "main/glheader.h" -#include "main/colormac.h" -#include "main/macros.h" -#include "main/imports.h" -#include "main/mtypes.h" - -#include "math/m_xform.h" - -#include "t_context.h" -#include "t_pipeline.h" - - -/*********************************************************************** - * Automatic texture coordinate generation (texgen) code. - */ - - -struct texgen_stage_data; - -typedef void (*texgen_func)( GLcontext *ctx, - struct texgen_stage_data *store, - GLuint unit); - - -struct texgen_stage_data { - - /* Per-texunit derived state. - */ - GLuint TexgenSize[MAX_TEXTURE_COORD_UNITS]; - texgen_func TexgenFunc[MAX_TEXTURE_COORD_UNITS]; - - /* Temporary values used in texgen. - */ - GLfloat (*tmp_f)[3]; - GLfloat *tmp_m; - - /* Buffered outputs of the stage. - */ - GLvector4f texcoord[MAX_TEXTURE_COORD_UNITS]; -}; - - -#define TEXGEN_STAGE_DATA(stage) ((struct texgen_stage_data *)stage->privatePtr) - - - -static GLuint all_bits[5] = { - 0, - VEC_SIZE_1, - VEC_SIZE_2, - VEC_SIZE_3, - VEC_SIZE_4, -}; - -#define VEC_SIZE_FLAGS (VEC_SIZE_1|VEC_SIZE_2|VEC_SIZE_3|VEC_SIZE_4) - -#define TEXGEN_NEED_M (TEXGEN_SPHERE_MAP) -#define TEXGEN_NEED_F (TEXGEN_SPHERE_MAP | \ - TEXGEN_REFLECTION_MAP_NV) - - - -static void build_m3( GLfloat f[][3], GLfloat m[], - const GLvector4f *normal, - const GLvector4f *eye ) -{ - GLuint stride = eye->stride; - GLfloat *coord = (GLfloat *)eye->start; - GLuint count = eye->count; - const GLfloat *norm = normal->start; - GLuint i; - - for (i=0;istride)) { - GLfloat u[3], two_nu, fx, fy, fz; - COPY_3V( u, coord ); - NORMALIZE_3FV( u ); - two_nu = 2.0F * DOT3(norm,u); - fx = f[i][0] = u[0] - norm[0] * two_nu; - fy = f[i][1] = u[1] - norm[1] * two_nu; - fz = f[i][2] = u[2] - norm[2] * two_nu; - m[i] = fx * fx + fy * fy + (fz + 1.0F) * (fz + 1.0F); - if (m[i] != 0.0F) { - m[i] = 0.5F * _mesa_inv_sqrtf(m[i]); - } - } -} - - - -static void build_m2( GLfloat f[][3], GLfloat m[], - const GLvector4f *normal, - const GLvector4f *eye ) -{ - GLuint stride = eye->stride; - GLfloat *coord = eye->start; - GLuint count = eye->count; - - GLfloat *norm = normal->start; - GLuint i; - - for (i=0;istride)) { - GLfloat u[3], two_nu, fx, fy, fz; - COPY_2V( u, coord ); - u[2] = 0; - NORMALIZE_3FV( u ); - two_nu = 2.0F * DOT3(norm,u); - fx = f[i][0] = u[0] - norm[0] * two_nu; - fy = f[i][1] = u[1] - norm[1] * two_nu; - fz = f[i][2] = u[2] - norm[2] * two_nu; - m[i] = fx * fx + fy * fy + (fz + 1.0F) * (fz + 1.0F); - if (m[i] != 0.0F) { - m[i] = 0.5F * _mesa_inv_sqrtf(m[i]); - } - } -} - - - -typedef void (*build_m_func)( GLfloat f[][3], - GLfloat m[], - const GLvector4f *normal, - const GLvector4f *eye ); - - -static build_m_func build_m_tab[5] = { - NULL, - NULL, - build_m2, - build_m3, - build_m3 -}; - - -/* This is unusual in that we respect the stride of the output vector - * (f). This allows us to pass in either a texcoord vector4f, or a - * temporary vector3f. - */ -static void build_f3( GLfloat *f, - GLuint fstride, - const GLvector4f *normal, - const GLvector4f *eye ) -{ - GLuint stride = eye->stride; - GLfloat *coord = eye->start; - GLuint count = eye->count; - - GLfloat *norm = normal->start; - GLuint i; - - for (i=0;istride); - } -} - - -static void build_f2( GLfloat *f, - GLuint fstride, - const GLvector4f *normal, - const GLvector4f *eye ) -{ - GLuint stride = eye->stride; - GLfloat *coord = eye->start; - GLuint count = eye->count; - GLfloat *norm = normal->start; - GLuint i; - - for (i=0;istride); - } -} - -typedef void (*build_f_func)( GLfloat *f, - GLuint fstride, - const GLvector4f *normal_vec, - const GLvector4f *eye ); - - - -/* Just treat 4-vectors as 3-vectors. - */ -static build_f_func build_f_tab[5] = { - NULL, - NULL, - build_f2, - build_f3, - build_f3 -}; - - - -/* Special case texgen functions. - */ -static void texgen_reflection_map_nv( GLcontext *ctx, - struct texgen_stage_data *store, - GLuint unit ) -{ - struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; - GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit]; - GLvector4f *out = &store->texcoord[unit]; - - build_f_tab[VB->EyePtr->size]( out->start, - out->stride, - VB->AttribPtr[_TNL_ATTRIB_NORMAL], - VB->EyePtr ); - - out->flags |= (in->flags & VEC_SIZE_FLAGS) | VEC_SIZE_3; - out->count = VB->Count; - out->size = MAX2(in->size, 3); - if (in->size == 4) - _mesa_copy_tab[0x8]( out, in ); -} - - - -static void texgen_normal_map_nv( GLcontext *ctx, - struct texgen_stage_data *store, - GLuint unit ) -{ - struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; - GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit]; - GLvector4f *out = &store->texcoord[unit]; - GLvector4f *normal = VB->AttribPtr[_TNL_ATTRIB_NORMAL]; - GLfloat (*texcoord)[4] = (GLfloat (*)[4])out->start; - GLuint count = VB->Count; - GLuint i; - const GLfloat *norm = normal->start; - - for (i=0;istride)) { - texcoord[i][0] = norm[0]; - texcoord[i][1] = norm[1]; - texcoord[i][2] = norm[2]; - } - - - out->flags |= (in->flags & VEC_SIZE_FLAGS) | VEC_SIZE_3; - out->count = count; - out->size = MAX2(in->size, 3); - if (in->size == 4) - _mesa_copy_tab[0x8]( out, in ); -} - - -static void texgen_sphere_map( GLcontext *ctx, - struct texgen_stage_data *store, - GLuint unit ) -{ - struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; - GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit]; - GLvector4f *out = &store->texcoord[unit]; - GLfloat (*texcoord)[4] = (GLfloat (*)[4]) out->start; - GLuint count = VB->Count; - GLuint i; - GLfloat (*f)[3] = store->tmp_f; - GLfloat *m = store->tmp_m; - - (build_m_tab[VB->EyePtr->size])( store->tmp_f, - store->tmp_m, - VB->AttribPtr[_TNL_ATTRIB_NORMAL], - VB->EyePtr ); - - out->size = MAX2(in->size,2); - - for (i=0;icount = count; - out->flags |= (in->flags & VEC_SIZE_FLAGS) | VEC_SIZE_2; - if (in->size > 2) - _mesa_copy_tab[all_bits[in->size] & ~0x3]( out, in ); -} - - - -static void texgen( GLcontext *ctx, - struct texgen_stage_data *store, - GLuint unit ) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - struct vertex_buffer *VB = &tnl->vb; - GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit]; - GLvector4f *out = &store->texcoord[unit]; - const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; - const GLvector4f *obj = VB->AttribPtr[_TNL_ATTRIB_POS]; - const GLvector4f *eye = VB->EyePtr; - const GLvector4f *normal = VB->AttribPtr[_TNL_ATTRIB_NORMAL]; - const GLfloat *m = store->tmp_m; - const GLuint count = VB->Count; - GLfloat (*texcoord)[4] = (GLfloat (*)[4])out->data; - GLfloat (*f)[3] = store->tmp_f; - GLuint copy; - - if (texUnit->_GenFlags & TEXGEN_NEED_M) { - build_m_tab[eye->size]( store->tmp_f, store->tmp_m, normal, eye ); - } else if (texUnit->_GenFlags & TEXGEN_NEED_F) { - build_f_tab[eye->size]( (GLfloat *)store->tmp_f, 3, normal, eye ); - } - - - out->size = MAX2(in->size, store->TexgenSize[unit]); - out->flags |= (in->flags & VEC_SIZE_FLAGS) | texUnit->TexGenEnabled; - out->count = count; - - copy = (all_bits[in->size] & ~texUnit->TexGenEnabled); - if (copy) - _mesa_copy_tab[copy]( out, in ); - - if (texUnit->TexGenEnabled & S_BIT) { - GLuint i; - switch (texUnit->GenS.Mode) { - case GL_OBJECT_LINEAR: - _mesa_dotprod_tab[obj->size]( (GLfloat *)out->data, - sizeof(out->data[0]), obj, - texUnit->GenS.ObjectPlane ); - break; - case GL_EYE_LINEAR: - _mesa_dotprod_tab[eye->size]( (GLfloat *)out->data, - sizeof(out->data[0]), eye, - texUnit->GenS.EyePlane ); - break; - case GL_SPHERE_MAP: - for (i = 0; i < count; i++) - texcoord[i][0] = f[i][0] * m[i] + 0.5F; - break; - case GL_REFLECTION_MAP_NV: - for (i=0;istart; - for (i=0;istride)) { - texcoord[i][0] = norm[0]; - } - break; - } - default: - _mesa_problem(ctx, "Bad S texgen"); - } - } - - if (texUnit->TexGenEnabled & T_BIT) { - GLuint i; - switch (texUnit->GenT.Mode) { - case GL_OBJECT_LINEAR: - _mesa_dotprod_tab[obj->size]( &(out->data[0][1]), - sizeof(out->data[0]), obj, - texUnit->GenT.ObjectPlane ); - break; - case GL_EYE_LINEAR: - _mesa_dotprod_tab[eye->size]( &(out->data[0][1]), - sizeof(out->data[0]), eye, - texUnit->GenT.EyePlane ); - break; - case GL_SPHERE_MAP: - for (i = 0; i < count; i++) - texcoord[i][1] = f[i][1] * m[i] + 0.5F; - break; - case GL_REFLECTION_MAP_NV: - for (i=0;istart; - for (i=0;istride)) { - texcoord[i][1] = norm[1]; - } - break; - } - default: - _mesa_problem(ctx, "Bad T texgen"); - } - } - - if (texUnit->TexGenEnabled & R_BIT) { - GLuint i; - switch (texUnit->GenR.Mode) { - case GL_OBJECT_LINEAR: - _mesa_dotprod_tab[obj->size]( &(out->data[0][2]), - sizeof(out->data[0]), obj, - texUnit->GenR.ObjectPlane ); - break; - case GL_EYE_LINEAR: - _mesa_dotprod_tab[eye->size]( &(out->data[0][2]), - sizeof(out->data[0]), eye, - texUnit->GenR.EyePlane ); - break; - case GL_REFLECTION_MAP_NV: - for (i=0;istart; - for (i=0;istride)) { - texcoord[i][2] = norm[2]; - } - break; - } - default: - _mesa_problem(ctx, "Bad R texgen"); - } - } - - if (texUnit->TexGenEnabled & Q_BIT) { - switch (texUnit->GenQ.Mode) { - case GL_OBJECT_LINEAR: - _mesa_dotprod_tab[obj->size]( &(out->data[0][3]), - sizeof(out->data[0]), obj, - texUnit->GenQ.ObjectPlane ); - break; - case GL_EYE_LINEAR: - _mesa_dotprod_tab[eye->size]( &(out->data[0][3]), - sizeof(out->data[0]), eye, - texUnit->GenQ.EyePlane ); - break; - default: - _mesa_problem(ctx, "Bad Q texgen"); - } - } -} - - - - -static GLboolean run_texgen_stage( GLcontext *ctx, - struct tnl_pipeline_stage *stage ) -{ - struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; - struct texgen_stage_data *store = TEXGEN_STAGE_DATA(stage); - GLuint i; - - if (!ctx->Texture._TexGenEnabled || ctx->VertexProgram._Current) - return GL_TRUE; - - for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) { - struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i]; - - if (texUnit->TexGenEnabled) { - - store->TexgenFunc[i]( ctx, store, i ); - - VB->AttribPtr[VERT_ATTRIB_TEX0 + i] = &store->texcoord[i]; - } - } - - return GL_TRUE; -} - - -static void validate_texgen_stage( GLcontext *ctx, - struct tnl_pipeline_stage *stage ) -{ - struct texgen_stage_data *store = TEXGEN_STAGE_DATA(stage); - GLuint i; - - if (!ctx->Texture._TexGenEnabled || ctx->VertexProgram._Current) - return; - - for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) { - struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i]; - - if (texUnit->TexGenEnabled) { - GLuint sz; - - if (texUnit->TexGenEnabled & Q_BIT) - sz = 4; - else if (texUnit->TexGenEnabled & R_BIT) - sz = 3; - else if (texUnit->TexGenEnabled & T_BIT) - sz = 2; - else - sz = 1; - - store->TexgenSize[i] = sz; - store->TexgenFunc[i] = texgen; /* general solution */ - - /* look for special texgen cases */ - if (texUnit->TexGenEnabled == (S_BIT|T_BIT|R_BIT)) { - if (texUnit->_GenFlags == TEXGEN_REFLECTION_MAP_NV) { - store->TexgenFunc[i] = texgen_reflection_map_nv; - } - else if (texUnit->_GenFlags == TEXGEN_NORMAL_MAP_NV) { - store->TexgenFunc[i] = texgen_normal_map_nv; - } - } - else if (texUnit->TexGenEnabled == (S_BIT|T_BIT) && - texUnit->_GenFlags == TEXGEN_SPHERE_MAP) { - store->TexgenFunc[i] = texgen_sphere_map; - } - } - } -} - - - - - -/* Called the first time stage->run() is invoked. - */ -static GLboolean alloc_texgen_data( GLcontext *ctx, - struct tnl_pipeline_stage *stage ) -{ - struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; - struct texgen_stage_data *store; - GLuint i; - - stage->privatePtr = CALLOC(sizeof(*store)); - store = TEXGEN_STAGE_DATA(stage); - if (!store) - return GL_FALSE; - - for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) - _mesa_vector4f_alloc( &store->texcoord[i], 0, VB->Size, 32 ); - - store->tmp_f = (GLfloat (*)[3]) MALLOC(VB->Size * sizeof(GLfloat) * 3); - store->tmp_m = (GLfloat *) MALLOC(VB->Size * sizeof(GLfloat)); - - return GL_TRUE; -} - - -static void free_texgen_data( struct tnl_pipeline_stage *stage ) - -{ - struct texgen_stage_data *store = TEXGEN_STAGE_DATA(stage); - GLuint i; - - if (store) { - for (i = 0 ; i < MAX_TEXTURE_COORD_UNITS ; i++) - if (store->texcoord[i].data) - _mesa_vector4f_free( &store->texcoord[i] ); - - - if (store->tmp_f) FREE( store->tmp_f ); - if (store->tmp_m) FREE( store->tmp_m ); - FREE( store ); - stage->privatePtr = NULL; - } -} - - - -const struct tnl_pipeline_stage _tnl_texgen_stage = -{ - "texgen", /* name */ - NULL, /* private data */ - alloc_texgen_data, /* destructor */ - free_texgen_data, /* destructor */ - validate_texgen_stage, /* check */ - run_texgen_stage /* run -- initially set to alloc data */ -}; +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: + * Brian Paul + * Keith Whitwell + */ + +/* + * Regarding GL_NV_texgen_reflection: + * + * Portions of this software may use or implement intellectual + * property owned and licensed by NVIDIA Corporation. NVIDIA disclaims + * any and all warranties with respect to such intellectual property, + * including any use thereof or modifications thereto. + */ + +#include "main/glheader.h" +#include "main/colormac.h" +#include "main/macros.h" +#include "main/imports.h" +#include "main/mtypes.h" + +#include "math/m_xform.h" + +#include "t_context.h" +#include "t_pipeline.h" + + +/*********************************************************************** + * Automatic texture coordinate generation (texgen) code. + */ + + +struct texgen_stage_data; + +typedef void (*texgen_func)( struct gl_context *ctx, + struct texgen_stage_data *store, + GLuint unit); + + +struct texgen_stage_data { + + /* Per-texunit derived state. + */ + GLuint TexgenSize[MAX_TEXTURE_COORD_UNITS]; + texgen_func TexgenFunc[MAX_TEXTURE_COORD_UNITS]; + + /* Temporary values used in texgen. + */ + GLfloat (*tmp_f)[3]; + GLfloat *tmp_m; + + /* Buffered outputs of the stage. + */ + GLvector4f texcoord[MAX_TEXTURE_COORD_UNITS]; +}; + + +#define TEXGEN_STAGE_DATA(stage) ((struct texgen_stage_data *)stage->privatePtr) + + + +static GLuint all_bits[5] = { + 0, + VEC_SIZE_1, + VEC_SIZE_2, + VEC_SIZE_3, + VEC_SIZE_4, +}; + +#define VEC_SIZE_FLAGS (VEC_SIZE_1|VEC_SIZE_2|VEC_SIZE_3|VEC_SIZE_4) + +#define TEXGEN_NEED_M (TEXGEN_SPHERE_MAP) +#define TEXGEN_NEED_F (TEXGEN_SPHERE_MAP | \ + TEXGEN_REFLECTION_MAP_NV) + + + +static void build_m3( GLfloat f[][3], GLfloat m[], + const GLvector4f *normal, + const GLvector4f *eye ) +{ + GLuint stride = eye->stride; + GLfloat *coord = (GLfloat *)eye->start; + GLuint count = eye->count; + const GLfloat *norm = normal->start; + GLuint i; + + for (i=0;istride)) { + GLfloat u[3], two_nu, fx, fy, fz; + COPY_3V( u, coord ); + NORMALIZE_3FV( u ); + two_nu = 2.0F * DOT3(norm,u); + fx = f[i][0] = u[0] - norm[0] * two_nu; + fy = f[i][1] = u[1] - norm[1] * two_nu; + fz = f[i][2] = u[2] - norm[2] * two_nu; + m[i] = fx * fx + fy * fy + (fz + 1.0F) * (fz + 1.0F); + if (m[i] != 0.0F) { + m[i] = 0.5F * _mesa_inv_sqrtf(m[i]); + } + } +} + + + +static void build_m2( GLfloat f[][3], GLfloat m[], + const GLvector4f *normal, + const GLvector4f *eye ) +{ + GLuint stride = eye->stride; + GLfloat *coord = eye->start; + GLuint count = eye->count; + + GLfloat *norm = normal->start; + GLuint i; + + for (i=0;istride)) { + GLfloat u[3], two_nu, fx, fy, fz; + COPY_2V( u, coord ); + u[2] = 0; + NORMALIZE_3FV( u ); + two_nu = 2.0F * DOT3(norm,u); + fx = f[i][0] = u[0] - norm[0] * two_nu; + fy = f[i][1] = u[1] - norm[1] * two_nu; + fz = f[i][2] = u[2] - norm[2] * two_nu; + m[i] = fx * fx + fy * fy + (fz + 1.0F) * (fz + 1.0F); + if (m[i] != 0.0F) { + m[i] = 0.5F * _mesa_inv_sqrtf(m[i]); + } + } +} + + + +typedef void (*build_m_func)( GLfloat f[][3], + GLfloat m[], + const GLvector4f *normal, + const GLvector4f *eye ); + + +static build_m_func build_m_tab[5] = { + NULL, + NULL, + build_m2, + build_m3, + build_m3 +}; + + +/* This is unusual in that we respect the stride of the output vector + * (f). This allows us to pass in either a texcoord vector4f, or a + * temporary vector3f. + */ +static void build_f3( GLfloat *f, + GLuint fstride, + const GLvector4f *normal, + const GLvector4f *eye ) +{ + GLuint stride = eye->stride; + GLfloat *coord = eye->start; + GLuint count = eye->count; + + GLfloat *norm = normal->start; + GLuint i; + + for (i=0;istride); + } +} + + +static void build_f2( GLfloat *f, + GLuint fstride, + const GLvector4f *normal, + const GLvector4f *eye ) +{ + GLuint stride = eye->stride; + GLfloat *coord = eye->start; + GLuint count = eye->count; + GLfloat *norm = normal->start; + GLuint i; + + for (i=0;istride); + } +} + +typedef void (*build_f_func)( GLfloat *f, + GLuint fstride, + const GLvector4f *normal_vec, + const GLvector4f *eye ); + + + +/* Just treat 4-vectors as 3-vectors. + */ +static build_f_func build_f_tab[5] = { + NULL, + NULL, + build_f2, + build_f3, + build_f3 +}; + + + +/* Special case texgen functions. + */ +static void texgen_reflection_map_nv( struct gl_context *ctx, + struct texgen_stage_data *store, + GLuint unit ) +{ + struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; + GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit]; + GLvector4f *out = &store->texcoord[unit]; + + build_f_tab[VB->EyePtr->size]( out->start, + out->stride, + VB->AttribPtr[_TNL_ATTRIB_NORMAL], + VB->EyePtr ); + + out->flags |= (in->flags & VEC_SIZE_FLAGS) | VEC_SIZE_3; + out->count = VB->Count; + out->size = MAX2(in->size, 3); + if (in->size == 4) + _mesa_copy_tab[0x8]( out, in ); +} + + + +static void texgen_normal_map_nv( struct gl_context *ctx, + struct texgen_stage_data *store, + GLuint unit ) +{ + struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; + GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit]; + GLvector4f *out = &store->texcoord[unit]; + GLvector4f *normal = VB->AttribPtr[_TNL_ATTRIB_NORMAL]; + GLfloat (*texcoord)[4] = (GLfloat (*)[4])out->start; + GLuint count = VB->Count; + GLuint i; + const GLfloat *norm = normal->start; + + for (i=0;istride)) { + texcoord[i][0] = norm[0]; + texcoord[i][1] = norm[1]; + texcoord[i][2] = norm[2]; + } + + + out->flags |= (in->flags & VEC_SIZE_FLAGS) | VEC_SIZE_3; + out->count = count; + out->size = MAX2(in->size, 3); + if (in->size == 4) + _mesa_copy_tab[0x8]( out, in ); +} + + +static void texgen_sphere_map( struct gl_context *ctx, + struct texgen_stage_data *store, + GLuint unit ) +{ + struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; + GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit]; + GLvector4f *out = &store->texcoord[unit]; + GLfloat (*texcoord)[4] = (GLfloat (*)[4]) out->start; + GLuint count = VB->Count; + GLuint i; + GLfloat (*f)[3] = store->tmp_f; + GLfloat *m = store->tmp_m; + + (build_m_tab[VB->EyePtr->size])( store->tmp_f, + store->tmp_m, + VB->AttribPtr[_TNL_ATTRIB_NORMAL], + VB->EyePtr ); + + out->size = MAX2(in->size,2); + + for (i=0;icount = count; + out->flags |= (in->flags & VEC_SIZE_FLAGS) | VEC_SIZE_2; + if (in->size > 2) + _mesa_copy_tab[all_bits[in->size] & ~0x3]( out, in ); +} + + + +static void texgen( struct gl_context *ctx, + struct texgen_stage_data *store, + GLuint unit ) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit]; + GLvector4f *out = &store->texcoord[unit]; + const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; + const GLvector4f *obj = VB->AttribPtr[_TNL_ATTRIB_POS]; + const GLvector4f *eye = VB->EyePtr; + const GLvector4f *normal = VB->AttribPtr[_TNL_ATTRIB_NORMAL]; + const GLfloat *m = store->tmp_m; + const GLuint count = VB->Count; + GLfloat (*texcoord)[4] = (GLfloat (*)[4])out->data; + GLfloat (*f)[3] = store->tmp_f; + GLuint copy; + + if (texUnit->_GenFlags & TEXGEN_NEED_M) { + build_m_tab[eye->size]( store->tmp_f, store->tmp_m, normal, eye ); + } else if (texUnit->_GenFlags & TEXGEN_NEED_F) { + build_f_tab[eye->size]( (GLfloat *)store->tmp_f, 3, normal, eye ); + } + + + out->size = MAX2(in->size, store->TexgenSize[unit]); + out->flags |= (in->flags & VEC_SIZE_FLAGS) | texUnit->TexGenEnabled; + out->count = count; + + copy = (all_bits[in->size] & ~texUnit->TexGenEnabled); + if (copy) + _mesa_copy_tab[copy]( out, in ); + + if (texUnit->TexGenEnabled & S_BIT) { + GLuint i; + switch (texUnit->GenS.Mode) { + case GL_OBJECT_LINEAR: + _mesa_dotprod_tab[obj->size]( (GLfloat *)out->data, + sizeof(out->data[0]), obj, + texUnit->GenS.ObjectPlane ); + break; + case GL_EYE_LINEAR: + _mesa_dotprod_tab[eye->size]( (GLfloat *)out->data, + sizeof(out->data[0]), eye, + texUnit->GenS.EyePlane ); + break; + case GL_SPHERE_MAP: + for (i = 0; i < count; i++) + texcoord[i][0] = f[i][0] * m[i] + 0.5F; + break; + case GL_REFLECTION_MAP_NV: + for (i=0;istart; + for (i=0;istride)) { + texcoord[i][0] = norm[0]; + } + break; + } + default: + _mesa_problem(ctx, "Bad S texgen"); + } + } + + if (texUnit->TexGenEnabled & T_BIT) { + GLuint i; + switch (texUnit->GenT.Mode) { + case GL_OBJECT_LINEAR: + _mesa_dotprod_tab[obj->size]( &(out->data[0][1]), + sizeof(out->data[0]), obj, + texUnit->GenT.ObjectPlane ); + break; + case GL_EYE_LINEAR: + _mesa_dotprod_tab[eye->size]( &(out->data[0][1]), + sizeof(out->data[0]), eye, + texUnit->GenT.EyePlane ); + break; + case GL_SPHERE_MAP: + for (i = 0; i < count; i++) + texcoord[i][1] = f[i][1] * m[i] + 0.5F; + break; + case GL_REFLECTION_MAP_NV: + for (i=0;istart; + for (i=0;istride)) { + texcoord[i][1] = norm[1]; + } + break; + } + default: + _mesa_problem(ctx, "Bad T texgen"); + } + } + + if (texUnit->TexGenEnabled & R_BIT) { + GLuint i; + switch (texUnit->GenR.Mode) { + case GL_OBJECT_LINEAR: + _mesa_dotprod_tab[obj->size]( &(out->data[0][2]), + sizeof(out->data[0]), obj, + texUnit->GenR.ObjectPlane ); + break; + case GL_EYE_LINEAR: + _mesa_dotprod_tab[eye->size]( &(out->data[0][2]), + sizeof(out->data[0]), eye, + texUnit->GenR.EyePlane ); + break; + case GL_REFLECTION_MAP_NV: + for (i=0;istart; + for (i=0;istride)) { + texcoord[i][2] = norm[2]; + } + break; + } + default: + _mesa_problem(ctx, "Bad R texgen"); + } + } + + if (texUnit->TexGenEnabled & Q_BIT) { + switch (texUnit->GenQ.Mode) { + case GL_OBJECT_LINEAR: + _mesa_dotprod_tab[obj->size]( &(out->data[0][3]), + sizeof(out->data[0]), obj, + texUnit->GenQ.ObjectPlane ); + break; + case GL_EYE_LINEAR: + _mesa_dotprod_tab[eye->size]( &(out->data[0][3]), + sizeof(out->data[0]), eye, + texUnit->GenQ.EyePlane ); + break; + default: + _mesa_problem(ctx, "Bad Q texgen"); + } + } +} + + + + +static GLboolean run_texgen_stage( struct gl_context *ctx, + struct tnl_pipeline_stage *stage ) +{ + struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; + struct texgen_stage_data *store = TEXGEN_STAGE_DATA(stage); + GLuint i; + + if (!ctx->Texture._TexGenEnabled || ctx->VertexProgram._Current) + return GL_TRUE; + + for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) { + struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i]; + + if (texUnit->TexGenEnabled) { + + store->TexgenFunc[i]( ctx, store, i ); + + VB->AttribPtr[VERT_ATTRIB_TEX0 + i] = &store->texcoord[i]; + } + } + + return GL_TRUE; +} + + +static void validate_texgen_stage( struct gl_context *ctx, + struct tnl_pipeline_stage *stage ) +{ + struct texgen_stage_data *store = TEXGEN_STAGE_DATA(stage); + GLuint i; + + if (!ctx->Texture._TexGenEnabled || ctx->VertexProgram._Current) + return; + + for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) { + struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i]; + + if (texUnit->TexGenEnabled) { + GLuint sz; + + if (texUnit->TexGenEnabled & Q_BIT) + sz = 4; + else if (texUnit->TexGenEnabled & R_BIT) + sz = 3; + else if (texUnit->TexGenEnabled & T_BIT) + sz = 2; + else + sz = 1; + + store->TexgenSize[i] = sz; + store->TexgenFunc[i] = texgen; /* general solution */ + + /* look for special texgen cases */ + if (texUnit->TexGenEnabled == (S_BIT|T_BIT|R_BIT)) { + if (texUnit->_GenFlags == TEXGEN_REFLECTION_MAP_NV) { + store->TexgenFunc[i] = texgen_reflection_map_nv; + } + else if (texUnit->_GenFlags == TEXGEN_NORMAL_MAP_NV) { + store->TexgenFunc[i] = texgen_normal_map_nv; + } + } + else if (texUnit->TexGenEnabled == (S_BIT|T_BIT) && + texUnit->_GenFlags == TEXGEN_SPHERE_MAP) { + store->TexgenFunc[i] = texgen_sphere_map; + } + } + } +} + + + + + +/* Called the first time stage->run() is invoked. + */ +static GLboolean alloc_texgen_data( struct gl_context *ctx, + struct tnl_pipeline_stage *stage ) +{ + struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; + struct texgen_stage_data *store; + GLuint i; + + stage->privatePtr = CALLOC(sizeof(*store)); + store = TEXGEN_STAGE_DATA(stage); + if (!store) + return GL_FALSE; + + for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) + _mesa_vector4f_alloc( &store->texcoord[i], 0, VB->Size, 32 ); + + store->tmp_f = (GLfloat (*)[3]) MALLOC(VB->Size * sizeof(GLfloat) * 3); + store->tmp_m = (GLfloat *) MALLOC(VB->Size * sizeof(GLfloat)); + + return GL_TRUE; +} + + +static void free_texgen_data( struct tnl_pipeline_stage *stage ) + +{ + struct texgen_stage_data *store = TEXGEN_STAGE_DATA(stage); + GLuint i; + + if (store) { + for (i = 0 ; i < MAX_TEXTURE_COORD_UNITS ; i++) + if (store->texcoord[i].data) + _mesa_vector4f_free( &store->texcoord[i] ); + + + if (store->tmp_f) FREE( store->tmp_f ); + if (store->tmp_m) FREE( store->tmp_m ); + FREE( store ); + stage->privatePtr = NULL; + } +} + + + +const struct tnl_pipeline_stage _tnl_texgen_stage = +{ + "texgen", /* name */ + NULL, /* private data */ + alloc_texgen_data, /* destructor */ + free_texgen_data, /* destructor */ + validate_texgen_stage, /* check */ + run_texgen_stage /* run -- initially set to alloc data */ +}; 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