-/* $Id: t_vb_texgen.c,v 1.16 2003/01/14 04:55:47 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 5.1
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * 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"),
* 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.
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 <keith@tungstengraphics.com>
+ * Brian Paul Keith Whitwell <keithw@vmware.com>
*/
+/*
+ * 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 "glheader.h"
-#include "colormac.h"
-#include "context.h"
-#include "macros.h"
-#include "mmath.h"
-#include "imports.h"
-#include "mtypes.h"
+#include "main/errors.h"
+#include "main/glheader.h"
+#include "main/macros.h"
+
+#include "main/mtypes.h"
#include "math/m_xform.h"
struct texgen_stage_data;
-typedef void (*texgen_func)( GLcontext *ctx,
+typedef void (*texgen_func)( struct gl_context *ctx,
struct texgen_stage_data *store,
GLuint unit);
/* Per-texunit derived state.
*/
GLuint TexgenSize[MAX_TEXTURE_COORD_UNITS];
- GLuint TexgenHoles[MAX_TEXTURE_COORD_UNITS];
texgen_func TexgenFunc[MAX_TEXTURE_COORD_UNITS];
/* Temporary values used in texgen.
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 / (GLfloat) GL_SQRT(m[i]);
+ m[i] = 0.5F * (1.0f / sqrtf(m[i]));
}
}
}
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 / (GLfloat) GL_SQRT(m[i]);
+ m[i] = 0.5F * (1.0f / sqrtf(m[i]));
}
}
}
static build_m_func build_m_tab[5] = {
- 0,
- 0,
+ NULL,
+ NULL,
build_m2,
build_m3,
build_m3
/* Just treat 4-vectors as 3-vectors.
*/
static build_f_func build_f_tab[5] = {
- 0,
- 0,
+ NULL,
+ NULL,
build_f2,
build_f3,
build_f3
};
+
/* Special case texgen functions.
*/
-static void texgen_reflection_map_nv( GLcontext *ctx,
+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->TexCoordPtr[unit];
+ GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit];
GLvector4f *out = &store->texcoord[unit];
build_f_tab[VB->EyePtr->size]( out->start,
out->stride,
- VB->NormalPtr,
+ VB->AttribPtr[_TNL_ATTRIB_NORMAL],
VB->EyePtr );
- if (in) {
- out->flags |= (in->flags & VEC_SIZE_FLAGS) | VEC_SIZE_3;
- out->count = in->count;
- out->size = MAX2(in->size, 3);
- if (in->size == 4)
- _mesa_copy_tab[0x8]( out, in );
- }
- else {
- out->flags |= VEC_SIZE_3;
- out->size = 3;
- out->count = in->count;
- }
-
+ 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,
+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->TexCoordPtr[unit];
+ GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit];
GLvector4f *out = &store->texcoord[unit];
- GLvector4f *normal = VB->NormalPtr;
+ GLvector4f *normal = VB->AttribPtr[_TNL_ATTRIB_NORMAL];
GLfloat (*texcoord)[4] = (GLfloat (*)[4])out->start;
GLuint count = VB->Count;
GLuint i;
}
- if (in) {
- out->flags |= (in->flags & VEC_SIZE_FLAGS) | VEC_SIZE_3;
- out->count = in->count;
- out->size = MAX2(in->size, 3);
- if (in->size == 4)
- _mesa_copy_tab[0x8]( out, in );
- }
- else {
- out->flags |= VEC_SIZE_3;
- out->size = 3;
- out->count = in->count;
- }
+ 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,
+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->TexCoordPtr[unit];
+ GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit];
GLvector4f *out = &store->texcoord[unit];
GLfloat (*texcoord)[4] = (GLfloat (*)[4]) out->start;
GLuint count = VB->Count;
GLfloat (*f)[3] = store->tmp_f;
GLfloat *m = store->tmp_m;
-/* _mesa_debug(NULL, "%s normstride %d eyestride %d\n", */
-/* __FUNCTION__, VB->NormalPtr->stride, */
-/* VB->EyePtr->stride); */
-
(build_m_tab[VB->EyePtr->size])( store->tmp_f,
store->tmp_m,
- VB->NormalPtr,
+ VB->AttribPtr[_TNL_ATTRIB_NORMAL],
VB->EyePtr );
+ out->size = MAX2(in->size,2);
+
for (i=0;i<count;i++) {
texcoord[i][0] = f[i][0] * m[i] + 0.5F;
texcoord[i][1] = f[i][1] * m[i] + 0.5F;
}
- if (in) {
- out->size = MAX2(in->size,2);
- out->count = in->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 );
- } else {
- out->size = 2;
- out->flags |= VEC_SIZE_2;
- out->count = in->count;
- }
+ out->count = 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,
+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->TexCoordPtr[unit];
+ GLvector4f *in = VB->AttribPtr[VERT_ATTRIB_TEX0 + unit];
GLvector4f *out = &store->texcoord[unit];
- struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
- const GLvector4f *obj = VB->ObjPtr;
+ const struct gl_fixedfunc_texture_unit *texUnit =
+ &ctx->Texture.FixedFuncUnit[unit];
+ const GLvector4f *obj = VB->AttribPtr[_TNL_ATTRIB_POS];
const GLvector4f *eye = VB->EyePtr;
- const GLvector4f *normal = VB->NormalPtr;
+ 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 *indata;
- GLuint count = VB->Count;
GLfloat (*f)[3] = store->tmp_f;
- GLfloat *m = store->tmp_m;
- GLuint holes = 0;
-
+ GLuint copy;
if (texUnit->_GenFlags & TEXGEN_NEED_M) {
- build_m_tab[in->size]( store->tmp_f, store->tmp_m, normal, eye );
+ build_m_tab[eye->size]( store->tmp_f, store->tmp_m, normal, eye );
} else if (texUnit->_GenFlags & TEXGEN_NEED_F) {
- build_f_tab[in->size]( (GLfloat *)store->tmp_f, 3, normal, eye );
+ build_f_tab[eye->size]( (GLfloat *)store->tmp_f, 3, normal, eye );
}
- if (!in) {
- ASSERT(0);
- in = out;
- in->count = VB->Count;
- out->size = store->TexgenSize[unit];
- out->flags |= texUnit->TexGenEnabled;
- out->count = VB->Count;
- holes = store->TexgenHoles[unit];
- }
- else {
- GLuint copy = (all_bits[in->size] & ~texUnit->TexGenEnabled);
- if (copy)
- _mesa_copy_tab[copy]( out, in );
-
- out->size = MAX2(in->size, store->TexgenSize[unit]);
- out->flags |= (in->flags & VEC_SIZE_FLAGS) | texUnit->TexGenEnabled;
- out->count = in->count;
-
- holes = ~all_bits[in->size] & store->TexgenHoles[unit];
- }
+ out->size = MAX2(in->size, store->TexgenSize[unit]);
+ out->flags |= (in->flags & VEC_SIZE_FLAGS) | texUnit->TexGenEnabled;
+ out->count = count;
- if (holes) {
- if (holes & VEC_DIRTY_2) _mesa_vector4f_clean_elem(out, count, 2);
- if (holes & VEC_DIRTY_1) _mesa_vector4f_clean_elem(out, count, 1);
- if (holes & VEC_DIRTY_0) _mesa_vector4f_clean_elem(out, count, 0);
- }
+ copy = (all_bits[in->size] & ~texUnit->TexGenEnabled);
+ if (copy)
+ _mesa_copy_tab[copy]( out, in );
if (texUnit->TexGenEnabled & S_BIT) {
GLuint i;
- switch (texUnit->GenModeS) {
+ switch (texUnit->GenS.Mode) {
case GL_OBJECT_LINEAR:
_mesa_dotprod_tab[obj->size]( (GLfloat *)out->data,
sizeof(out->data[0]), obj,
- texUnit->ObjectPlaneS );
+ texUnit->GenS.ObjectPlane );
break;
case GL_EYE_LINEAR:
_mesa_dotprod_tab[eye->size]( (GLfloat *)out->data,
sizeof(out->data[0]), eye,
- texUnit->EyePlaneS );
+ texUnit->GenS.EyePlane );
break;
case GL_SPHERE_MAP:
- for (indata=in->start,i=0 ; i<count ;i++, STRIDE_F(indata,in->stride))
- texcoord[i][0] = indata[0] * m[i] + 0.5F;
+ 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;i<count;i++)
if (texUnit->TexGenEnabled & T_BIT) {
GLuint i;
- switch (texUnit->GenModeT) {
+ switch (texUnit->GenT.Mode) {
case GL_OBJECT_LINEAR:
_mesa_dotprod_tab[obj->size]( &(out->data[0][1]),
sizeof(out->data[0]), obj,
- texUnit->ObjectPlaneT );
+ texUnit->GenT.ObjectPlane );
break;
case GL_EYE_LINEAR:
_mesa_dotprod_tab[eye->size]( &(out->data[0][1]),
sizeof(out->data[0]), eye,
- texUnit->EyePlaneT );
+ texUnit->GenT.EyePlane );
break;
case GL_SPHERE_MAP:
- for (indata=in->start,i=0; i<count ;i++,STRIDE_F(indata,in->stride))
- texcoord[i][1] = indata[1] * m[i] + 0.5F;
+ 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;i<count;i++)
- texcoord[i][0] = f[i][0];
+ texcoord[i][1] = f[i][1];
break;
case GL_NORMAL_MAP_NV: {
const GLfloat *norm = normal->start;
if (texUnit->TexGenEnabled & R_BIT) {
GLuint i;
- switch (texUnit->GenModeR) {
+ switch (texUnit->GenR.Mode) {
case GL_OBJECT_LINEAR:
_mesa_dotprod_tab[obj->size]( &(out->data[0][2]),
sizeof(out->data[0]), obj,
- texUnit->ObjectPlaneR );
+ texUnit->GenR.ObjectPlane );
break;
case GL_EYE_LINEAR:
_mesa_dotprod_tab[eye->size]( &(out->data[0][2]),
sizeof(out->data[0]), eye,
- texUnit->EyePlaneR );
+ texUnit->GenR.EyePlane );
break;
case GL_REFLECTION_MAP_NV:
for (i=0;i<count;i++)
}
if (texUnit->TexGenEnabled & Q_BIT) {
- switch (texUnit->GenModeQ) {
+ switch (texUnit->GenQ.Mode) {
case GL_OBJECT_LINEAR:
_mesa_dotprod_tab[obj->size]( &(out->data[0][3]),
sizeof(out->data[0]), obj,
- texUnit->ObjectPlaneQ );
+ texUnit->GenQ.ObjectPlane );
break;
case GL_EYE_LINEAR:
_mesa_dotprod_tab[eye->size]( &(out->data[0][3]),
sizeof(out->data[0]), eye,
- texUnit->EyePlaneQ );
+ texUnit->GenQ.EyePlane );
break;
default:
_mesa_problem(ctx, "Bad Q texgen");
-static GLboolean run_texgen_stage( GLcontext *ctx,
- struct gl_pipeline_stage *stage )
+
+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 );
+ struct texgen_stage_data *store = TEXGEN_STAGE_DATA(stage);
GLuint i;
- for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++)
- if (ctx->Texture._TexGenEnabled & ENABLE_TEXGEN(i)) {
- if (stage->changed_inputs & (VERT_BIT_EYE | VERT_BIT_NORMAL | VERT_BIT_TEX(i)))
- store->TexgenFunc[i]( ctx, store, i );
+ if (!ctx->Texture._TexGenEnabled || ctx->VertexProgram._Current)
+ return GL_TRUE;
- VB->TexCoordPtr[i] = &store->texcoord[i];
+ for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) {
+ struct gl_fixedfunc_texture_unit *texUnit =
+ &ctx->Texture.FixedFuncUnit[i];
+
+ if (texUnit->TexGenEnabled) {
+ store->TexgenFunc[i]( ctx, store, i );
+
+ VB->AttribPtr[VERT_ATTRIB_TEX0 + i] = &store->texcoord[i];
}
+ }
return GL_TRUE;
}
-
-
-static GLboolean run_validate_texgen_stage( GLcontext *ctx,
- struct gl_pipeline_stage *stage )
+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;
- for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++) {
- struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i];
+ if (!ctx->Texture._TexGenEnabled || ctx->VertexProgram._Current)
+ return;
+
+ for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) {
+ struct gl_fixedfunc_texture_unit *texUnit =
+ &ctx->Texture.FixedFuncUnit[i];
if (texUnit->TexGenEnabled) {
GLuint sz;
- if (texUnit->TexGenEnabled & R_BIT)
+ if (texUnit->TexGenEnabled & Q_BIT)
sz = 4;
- else if (texUnit->TexGenEnabled & Q_BIT)
+ else if (texUnit->TexGenEnabled & R_BIT)
sz = 3;
else if (texUnit->TexGenEnabled & T_BIT)
sz = 2;
sz = 1;
store->TexgenSize[i] = sz;
- store->TexgenHoles[i] = (all_bits[sz] & ~texUnit->TexGenEnabled);
- store->TexgenFunc[i] = texgen;
+ 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;
}
}
}
-
- stage->run = run_texgen_stage;
- return stage->run( ctx, stage );
}
-static void check_texgen( GLcontext *ctx, struct gl_pipeline_stage *stage )
-{
- GLuint i;
- stage->active = 0;
-
- if (ctx->Texture._TexGenEnabled && !ctx->VertexProgram.Enabled) {
- GLuint inputs = 0;
- GLuint outputs = 0;
-
- if (ctx->Texture._GenFlags & TEXGEN_OBJ_LINEAR)
- inputs |= VERT_BIT_POS;
-
- if (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD)
- inputs |= VERT_BIT_EYE;
-
- if (ctx->Texture._GenFlags & TEXGEN_NEED_NORMALS)
- inputs |= VERT_BIT_NORMAL;
-
- for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++)
- if (ctx->Texture._TexGenEnabled & ENABLE_TEXGEN(i))
- {
- outputs |= VERT_BIT_TEX(i);
-
- /* Need the original input in case it contains a Q coord:
- * (sigh)
- */
- inputs |= VERT_BIT_TEX(i);
-
- /* Something for Feedback? */
- }
-
- if (stage->privatePtr)
- stage->run = run_validate_texgen_stage;
- stage->active = 1;
- stage->inputs = inputs;
- stage->outputs = outputs;
- }
-}
-
/* Called the first time stage->run() is invoked.
*/
-static GLboolean alloc_texgen_data( GLcontext *ctx,
- struct gl_pipeline_stage *stage )
+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));
+ stage->privatePtr = calloc(1, sizeof(*store));
store = TEXGEN_STAGE_DATA(stage);
if (!store)
return GL_FALSE;
- for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++)
+ 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));
+ store->tmp_f = malloc(VB->Size * sizeof(GLfloat) * 3);
+ store->tmp_m = malloc(VB->Size * sizeof(GLfloat));
- /* Now validate and run the stage.
- */
- stage->run = run_validate_texgen_stage;
- return stage->run( ctx, stage );
+ return GL_TRUE;
}
-static void free_texgen_data( struct gl_pipeline_stage *stage )
+static void free_texgen_data( struct tnl_pipeline_stage *stage )
{
struct texgen_stage_data *store = TEXGEN_STAGE_DATA(stage);
_mesa_vector4f_free( &store->texcoord[i] );
- if (store->tmp_f) FREE( store->tmp_f );
- if (store->tmp_m) FREE( store->tmp_m );
- FREE( store );
+ free( store->tmp_f );
+ free( store->tmp_m );
+ free( store );
stage->privatePtr = NULL;
}
}
-const struct gl_pipeline_stage _tnl_texgen_stage =
+const struct tnl_pipeline_stage _tnl_texgen_stage =
{
"texgen", /* name */
- _NEW_TEXTURE, /* when to call check() */
- _NEW_TEXTURE, /* when to invalidate stored data */
- GL_FALSE, /* active? */
- 0, /* inputs */
- 0, /* outputs */
- 0, /* changed_inputs */
NULL, /* private data */
+ alloc_texgen_data, /* destructor */
free_texgen_data, /* destructor */
- check_texgen, /* check */
- alloc_texgen_data /* run -- initially set to alloc data */
+ validate_texgen_stage, /* check */
+ run_texgen_stage /* run -- initially set to alloc data */
};
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