From 48d0dcbd5b7f80810ce259bc9ed6f57f99e27ca9 Mon Sep 17 00:00:00 2001 From: marha Date: Wed, 16 Feb 2011 16:53:37 +0000 Subject: pixman mesa git update 16 Feb 2011 --- mesalib/src/mesa/tnl/t_draw.c | 1028 +++++++++++++++++++++-------------------- 1 file changed, 534 insertions(+), 494 deletions(-) (limited to 'mesalib/src/mesa/tnl/t_draw.c') diff --git a/mesalib/src/mesa/tnl/t_draw.c b/mesalib/src/mesa/tnl/t_draw.c index 741f0ed3f..b1967e654 100644 --- a/mesalib/src/mesa/tnl/t_draw.c +++ b/mesalib/src/mesa/tnl/t_draw.c @@ -1,494 +1,534 @@ -/* - * Mesa 3-D graphics library - * Version: 7.1 - * - * Copyright (C) 1999-2007 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: - * Keith Whitwell - */ - -#include "main/glheader.h" -#include "main/condrender.h" -#include "main/context.h" -#include "main/imports.h" -#include "main/mtypes.h" -#include "main/macros.h" -#include "main/enums.h" - -#include "t_context.h" -#include "tnl.h" - - - -static GLubyte *get_space(struct gl_context *ctx, GLuint bytes) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - GLubyte *space = malloc(bytes); - - tnl->block[tnl->nr_blocks++] = space; - return space; -} - - -static void free_space(struct gl_context *ctx) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - GLuint i; - for (i = 0; i < tnl->nr_blocks; i++) - free(tnl->block[i]); - tnl->nr_blocks = 0; -} - - -/* Convert the incoming array to GLfloats. Understands the - * array->Normalized flag and selects the correct conversion method. - */ -#define CONVERT( TYPE, MACRO ) do { \ - GLuint i, j; \ - if (input->Normalized) { \ - for (i = 0; i < count; i++) { \ - const TYPE *in = (TYPE *)ptr; \ - for (j = 0; j < sz; j++) { \ - *fptr++ = MACRO(*in); \ - in++; \ - } \ - ptr += input->StrideB; \ - } \ - } else { \ - for (i = 0; i < count; i++) { \ - const TYPE *in = (TYPE *)ptr; \ - for (j = 0; j < sz; j++) { \ - *fptr++ = (GLfloat)(*in); \ - in++; \ - } \ - ptr += input->StrideB; \ - } \ - } \ -} while (0) - - -/** - * Convert array of BGRA/GLubyte[4] values to RGBA/float[4] - * \param ptr input/ubyte array - * \param fptr output/float array - */ -static void -convert_bgra_to_float(const struct gl_client_array *input, - const GLubyte *ptr, GLfloat *fptr, - GLuint count ) -{ - GLuint i; - assert(input->Normalized); - assert(input->Size == 4); - for (i = 0; i < count; i++) { - const GLubyte *in = (GLubyte *) ptr; /* in is in BGRA order */ - *fptr++ = UBYTE_TO_FLOAT(in[2]); /* red */ - *fptr++ = UBYTE_TO_FLOAT(in[1]); /* green */ - *fptr++ = UBYTE_TO_FLOAT(in[0]); /* blue */ - *fptr++ = UBYTE_TO_FLOAT(in[3]); /* alpha */ - ptr += input->StrideB; - } -} - -static void -convert_half_to_float(const struct gl_client_array *input, - const GLubyte *ptr, GLfloat *fptr, - GLuint count, GLuint sz) -{ - GLuint i, j; - - for (i = 0; i < count; i++) { - GLhalfARB *in = (GLhalfARB *)ptr; - - for (j = 0; j < sz; j++) { - *fptr++ = _mesa_half_to_float(in[j]); - } - ptr += input->StrideB; - } -} - -/* Adjust pointer to point at first requested element, convert to - * floating point, populate VB->AttribPtr[]. - */ -static void _tnl_import_array( struct gl_context *ctx, - GLuint attrib, - GLuint count, - const struct gl_client_array *input, - const GLubyte *ptr ) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - struct vertex_buffer *VB = &tnl->vb; - GLuint stride = input->StrideB; - - if (input->Type != GL_FLOAT) { - const GLuint sz = input->Size; - GLubyte *buf = get_space(ctx, count * sz * sizeof(GLfloat)); - GLfloat *fptr = (GLfloat *)buf; - - switch (input->Type) { - case GL_BYTE: - CONVERT(GLbyte, BYTE_TO_FLOAT); - break; - case GL_UNSIGNED_BYTE: - if (input->Format == GL_BGRA) { - /* See GL_EXT_vertex_array_bgra */ - convert_bgra_to_float(input, ptr, fptr, count); - } - else { - CONVERT(GLubyte, UBYTE_TO_FLOAT); - } - break; - case GL_SHORT: - CONVERT(GLshort, SHORT_TO_FLOAT); - break; - case GL_UNSIGNED_SHORT: - CONVERT(GLushort, USHORT_TO_FLOAT); - break; - case GL_INT: - CONVERT(GLint, INT_TO_FLOAT); - break; - case GL_UNSIGNED_INT: - CONVERT(GLuint, UINT_TO_FLOAT); - break; - case GL_DOUBLE: - CONVERT(GLdouble, (GLfloat)); - break; - case GL_HALF_FLOAT: - convert_half_to_float(input, ptr, fptr, count, sz); - break; - default: - assert(0); - break; - } - - ptr = buf; - stride = sz * sizeof(GLfloat); - } - - VB->AttribPtr[attrib] = &tnl->tmp_inputs[attrib]; - VB->AttribPtr[attrib]->data = (GLfloat (*)[4])ptr; - VB->AttribPtr[attrib]->start = (GLfloat *)ptr; - VB->AttribPtr[attrib]->count = count; - VB->AttribPtr[attrib]->stride = stride; - VB->AttribPtr[attrib]->size = input->Size; - - /* This should die, but so should the whole GLvector4f concept: - */ - VB->AttribPtr[attrib]->flags = (((1<Size)-1) | - VEC_NOT_WRITEABLE | - (stride == 4*sizeof(GLfloat) ? 0 : VEC_BAD_STRIDE)); - - VB->AttribPtr[attrib]->storage = NULL; -} - -#define CLIPVERTS ((6 + MAX_CLIP_PLANES) * 2) - - -static GLboolean *_tnl_import_edgeflag( struct gl_context *ctx, - const GLvector4f *input, - GLuint count) -{ - const GLubyte *ptr = (const GLubyte *)input->data; - const GLuint stride = input->stride; - GLboolean *space = (GLboolean *)get_space(ctx, count + CLIPVERTS); - GLboolean *bptr = space; - GLuint i; - - for (i = 0; i < count; i++) { - *bptr++ = ((GLfloat *)ptr)[0] == 1.0; - ptr += stride; - } - - return space; -} - - -static void bind_inputs( struct gl_context *ctx, - const struct gl_client_array *inputs[], - GLint count, - struct gl_buffer_object **bo, - GLuint *nr_bo ) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - struct vertex_buffer *VB = &tnl->vb; - GLuint i; - - /* Map all the VBOs - */ - for (i = 0; i < VERT_ATTRIB_MAX; i++) { - const void *ptr; - - if (inputs[i]->BufferObj->Name) { - if (!inputs[i]->BufferObj->Pointer) { - bo[*nr_bo] = inputs[i]->BufferObj; - (*nr_bo)++; - ctx->Driver.MapBuffer(ctx, - GL_ARRAY_BUFFER, - GL_READ_ONLY_ARB, - inputs[i]->BufferObj); - - assert(inputs[i]->BufferObj->Pointer); - } - - ptr = ADD_POINTERS(inputs[i]->BufferObj->Pointer, - inputs[i]->Ptr); - } - else - ptr = inputs[i]->Ptr; - - /* Just make sure the array is floating point, otherwise convert to - * temporary storage. - * - * XXX: remove the GLvector4f type at some stage and just use - * client arrays. - */ - _tnl_import_array(ctx, i, count, inputs[i], ptr); - } - - /* We process only the vertices between min & max index: - */ - VB->Count = count; - - /* These should perhaps be part of _TNL_ATTRIB_* */ - VB->BackfaceColorPtr = NULL; - VB->BackfaceIndexPtr = NULL; - VB->BackfaceSecondaryColorPtr = NULL; - - /* Clipping and drawing code still requires this to be a packed - * array of ubytes which can be written into. TODO: Fix and - * remove. - */ - if (ctx->Polygon.FrontMode != GL_FILL || - ctx->Polygon.BackMode != GL_FILL) - { - VB->EdgeFlag = _tnl_import_edgeflag( ctx, - VB->AttribPtr[_TNL_ATTRIB_EDGEFLAG], - VB->Count ); - } - else { - /* the data previously pointed to by EdgeFlag may have been freed */ - VB->EdgeFlag = NULL; - } -} - - -/* Translate indices to GLuints and store in VB->Elts. - */ -static void bind_indices( struct gl_context *ctx, - const struct _mesa_index_buffer *ib, - struct gl_buffer_object **bo, - GLuint *nr_bo) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - struct vertex_buffer *VB = &tnl->vb; - GLuint i; - void *ptr; - - if (!ib) { - VB->Elts = NULL; - return; - } - - if (ib->obj->Name && !ib->obj->Pointer) { - bo[*nr_bo] = ib->obj; - (*nr_bo)++; - ctx->Driver.MapBuffer(ctx, - GL_ELEMENT_ARRAY_BUFFER, - GL_READ_ONLY_ARB, - ib->obj); - - assert(ib->obj->Pointer); - } - - ptr = ADD_POINTERS(ib->obj->Pointer, ib->ptr); - - if (ib->type == GL_UNSIGNED_INT && VB->Primitive[0].basevertex == 0) { - VB->Elts = (GLuint *) ptr; - } - else { - GLuint *elts = (GLuint *)get_space(ctx, ib->count * sizeof(GLuint)); - VB->Elts = elts; - - if (ib->type == GL_UNSIGNED_INT) { - const GLuint *in = (GLuint *)ptr; - for (i = 0; i < ib->count; i++) - *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex; - } - else if (ib->type == GL_UNSIGNED_SHORT) { - const GLushort *in = (GLushort *)ptr; - for (i = 0; i < ib->count; i++) - *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex; - } - else { - const GLubyte *in = (GLubyte *)ptr; - for (i = 0; i < ib->count; i++) - *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex; - } - } -} - -static void bind_prims( struct gl_context *ctx, - const struct _mesa_prim *prim, - GLuint nr_prims ) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - struct vertex_buffer *VB = &tnl->vb; - - VB->Primitive = prim; - VB->PrimitiveCount = nr_prims; -} - -static void unmap_vbos( struct gl_context *ctx, - struct gl_buffer_object **bo, - GLuint nr_bo ) -{ - GLuint i; - for (i = 0; i < nr_bo; i++) { - ctx->Driver.UnmapBuffer(ctx, - 0, /* target -- I don't see why this would be needed */ - bo[i]); - } -} - - -void _tnl_vbo_draw_prims(struct gl_context *ctx, - const struct gl_client_array *arrays[], - const struct _mesa_prim *prim, - GLuint nr_prims, - const struct _mesa_index_buffer *ib, - GLboolean index_bounds_valid, - GLuint min_index, - GLuint max_index) -{ - if (!index_bounds_valid) - vbo_get_minmax_index(ctx, prim, ib, &min_index, &max_index); - - _tnl_draw_prims(ctx, arrays, prim, nr_prims, ib, min_index, max_index); -} - -/* This is the main entrypoint into the slimmed-down software tnl - * module. In a regular swtnl driver, this can be plugged straight - * into the vbo->Driver.DrawPrims() callback. - */ -void _tnl_draw_prims( struct gl_context *ctx, - const struct gl_client_array *arrays[], - const struct _mesa_prim *prim, - GLuint nr_prims, - const struct _mesa_index_buffer *ib, - GLuint min_index, - GLuint max_index) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - const GLuint TEST_SPLIT = 0; - const GLint max = TEST_SPLIT ? 8 : tnl->vb.Size - MAX_CLIPPED_VERTICES; - GLint max_basevertex = prim->basevertex; - GLuint i; - - /* Mesa core state should have been validated already */ - assert(ctx->NewState == 0x0); - - if (!_mesa_check_conditional_render(ctx)) - return; /* don't draw */ - - for (i = 1; i < nr_prims; i++) - max_basevertex = MAX2(max_basevertex, prim[i].basevertex); - - if (0) - { - printf("%s %d..%d\n", __FUNCTION__, min_index, max_index); - for (i = 0; i < nr_prims; i++) - printf("prim %d: %s start %d count %d\n", i, - _mesa_lookup_enum_by_nr(prim[i].mode), - prim[i].start, - prim[i].count); - } - - if (min_index) { - /* We always translate away calls with min_index != 0. - */ - vbo_rebase_prims( ctx, arrays, prim, nr_prims, ib, - min_index, max_index, - _tnl_vbo_draw_prims ); - return; - } - else if ((GLint)max_index + max_basevertex > max) { - /* The software TNL pipeline has a fixed amount of storage for - * vertices and it is necessary to split incoming drawing commands - * if they exceed that limit. - */ - struct split_limits limits; - limits.max_verts = max; - limits.max_vb_size = ~0; - limits.max_indices = ~0; - - /* This will split the buffers one way or another and - * recursively call back into this function. - */ - vbo_split_prims( ctx, arrays, prim, nr_prims, ib, - 0, max_index + prim->basevertex, - _tnl_vbo_draw_prims, - &limits ); - } - else { - /* May need to map a vertex buffer object for every attribute plus - * one for the index buffer. - */ - struct gl_buffer_object *bo[VERT_ATTRIB_MAX + 1]; - GLuint nr_bo = 0; - GLuint inst; - - for (i = 0; i < nr_prims;) { - GLuint this_nr_prims; - - /* Our SW TNL pipeline doesn't handle basevertex yet, so bind_indices - * will rebase the elements to the basevertex, and we'll only - * emit strings of prims with the same basevertex in one draw call. - */ - for (this_nr_prims = 1; i + this_nr_prims < nr_prims; - this_nr_prims++) { - if (prim[i].basevertex != prim[i + this_nr_prims].basevertex) - break; - } - - assert(prim[i].num_instances > 0); - - /* Binding inputs may imply mapping some vertex buffer objects. - * They will need to be unmapped below. - */ - for (inst = 0; inst < prim[i].num_instances; inst++) { - - bind_prims(ctx, &prim[i], this_nr_prims); - bind_inputs(ctx, arrays, max_index + prim[i].basevertex + 1, - bo, &nr_bo); - bind_indices(ctx, ib, bo, &nr_bo); - - tnl->CurInstance = inst; - TNL_CONTEXT(ctx)->Driver.RunPipeline(ctx); - - unmap_vbos(ctx, bo, nr_bo); - free_space(ctx); - } - - i += this_nr_prims; - } - } -} - +/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2007 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: + * Keith Whitwell + */ + +#include "main/glheader.h" +#include "main/condrender.h" +#include "main/context.h" +#include "main/imports.h" +#include "main/mtypes.h" +#include "main/macros.h" +#include "main/enums.h" + +#include "t_context.h" +#include "tnl.h" + + + +static GLubyte *get_space(struct gl_context *ctx, GLuint bytes) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + GLubyte *space = malloc(bytes); + + tnl->block[tnl->nr_blocks++] = space; + return space; +} + + +static void free_space(struct gl_context *ctx) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + GLuint i; + for (i = 0; i < tnl->nr_blocks; i++) + free(tnl->block[i]); + tnl->nr_blocks = 0; +} + + +/* Convert the incoming array to GLfloats. Understands the + * array->Normalized flag and selects the correct conversion method. + */ +#define CONVERT( TYPE, MACRO ) do { \ + GLuint i, j; \ + if (input->Normalized) { \ + for (i = 0; i < count; i++) { \ + const TYPE *in = (TYPE *)ptr; \ + for (j = 0; j < sz; j++) { \ + *fptr++ = MACRO(*in); \ + in++; \ + } \ + ptr += input->StrideB; \ + } \ + } else { \ + for (i = 0; i < count; i++) { \ + const TYPE *in = (TYPE *)ptr; \ + for (j = 0; j < sz; j++) { \ + *fptr++ = (GLfloat)(*in); \ + in++; \ + } \ + ptr += input->StrideB; \ + } \ + } \ +} while (0) + + +/** + * Convert array of BGRA/GLubyte[4] values to RGBA/float[4] + * \param ptr input/ubyte array + * \param fptr output/float array + */ +static void +convert_bgra_to_float(const struct gl_client_array *input, + const GLubyte *ptr, GLfloat *fptr, + GLuint count ) +{ + GLuint i; + assert(input->Normalized); + assert(input->Size == 4); + for (i = 0; i < count; i++) { + const GLubyte *in = (GLubyte *) ptr; /* in is in BGRA order */ + *fptr++ = UBYTE_TO_FLOAT(in[2]); /* red */ + *fptr++ = UBYTE_TO_FLOAT(in[1]); /* green */ + *fptr++ = UBYTE_TO_FLOAT(in[0]); /* blue */ + *fptr++ = UBYTE_TO_FLOAT(in[3]); /* alpha */ + ptr += input->StrideB; + } +} + +static void +convert_half_to_float(const struct gl_client_array *input, + const GLubyte *ptr, GLfloat *fptr, + GLuint count, GLuint sz) +{ + GLuint i, j; + + for (i = 0; i < count; i++) { + GLhalfARB *in = (GLhalfARB *)ptr; + + for (j = 0; j < sz; j++) { + *fptr++ = _mesa_half_to_float(in[j]); + } + ptr += input->StrideB; + } +} + +/** + * \brief Convert fixed-point to floating-point. + * + * In OpenGL, a fixed-point number is a "signed 2's complement 16.16 scaled + * integer" (Table 2.2 of the OpenGL ES 2.0 spec). + * + * If the buffer has the \c normalized flag set, the formula + * \code normalize(x) := (2*x + 1) / (2^16 - 1) \endcode + * is used to map the fixed-point numbers into the range [-1, 1]. + */ +static void +convert_fixed_to_float(const struct gl_client_array *input, + const GLubyte *ptr, GLfloat *fptr, + GLuint count) +{ + GLuint i, j; + const GLint size = input->Size; + + if (input->Normalized) { + for (i = 0; i < count; ++i) { + const GLfixed *in = (GLfixed *) ptr; + for (j = 0; j < size; ++j) { + *fptr++ = (GLfloat) (2 * in[j] + 1) / (GLfloat) ((1 << 16) - 1); + } + ptr += input->StrideB; + } + } else { + for (i = 0; i < count; ++i) { + const GLfixed *in = (GLfixed *) ptr; + for (j = 0; j < size; ++j) { + *fptr++ = in[j] / (GLfloat) (1 << 16); + } + ptr += input->StrideB; + } + } +} + +/* Adjust pointer to point at first requested element, convert to + * floating point, populate VB->AttribPtr[]. + */ +static void _tnl_import_array( struct gl_context *ctx, + GLuint attrib, + GLuint count, + const struct gl_client_array *input, + const GLubyte *ptr ) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + GLuint stride = input->StrideB; + + if (input->Type != GL_FLOAT) { + const GLuint sz = input->Size; + GLubyte *buf = get_space(ctx, count * sz * sizeof(GLfloat)); + GLfloat *fptr = (GLfloat *)buf; + + switch (input->Type) { + case GL_BYTE: + CONVERT(GLbyte, BYTE_TO_FLOAT); + break; + case GL_UNSIGNED_BYTE: + if (input->Format == GL_BGRA) { + /* See GL_EXT_vertex_array_bgra */ + convert_bgra_to_float(input, ptr, fptr, count); + } + else { + CONVERT(GLubyte, UBYTE_TO_FLOAT); + } + break; + case GL_SHORT: + CONVERT(GLshort, SHORT_TO_FLOAT); + break; + case GL_UNSIGNED_SHORT: + CONVERT(GLushort, USHORT_TO_FLOAT); + break; + case GL_INT: + CONVERT(GLint, INT_TO_FLOAT); + break; + case GL_UNSIGNED_INT: + CONVERT(GLuint, UINT_TO_FLOAT); + break; + case GL_DOUBLE: + CONVERT(GLdouble, (GLfloat)); + break; + case GL_HALF_FLOAT: + convert_half_to_float(input, ptr, fptr, count, sz); + break; + case GL_FIXED: + convert_fixed_to_float(input, ptr, fptr, count); + break; + default: + assert(0); + break; + } + + ptr = buf; + stride = sz * sizeof(GLfloat); + } + + VB->AttribPtr[attrib] = &tnl->tmp_inputs[attrib]; + VB->AttribPtr[attrib]->data = (GLfloat (*)[4])ptr; + VB->AttribPtr[attrib]->start = (GLfloat *)ptr; + VB->AttribPtr[attrib]->count = count; + VB->AttribPtr[attrib]->stride = stride; + VB->AttribPtr[attrib]->size = input->Size; + + /* This should die, but so should the whole GLvector4f concept: + */ + VB->AttribPtr[attrib]->flags = (((1<Size)-1) | + VEC_NOT_WRITEABLE | + (stride == 4*sizeof(GLfloat) ? 0 : VEC_BAD_STRIDE)); + + VB->AttribPtr[attrib]->storage = NULL; +} + +#define CLIPVERTS ((6 + MAX_CLIP_PLANES) * 2) + + +static GLboolean *_tnl_import_edgeflag( struct gl_context *ctx, + const GLvector4f *input, + GLuint count) +{ + const GLubyte *ptr = (const GLubyte *)input->data; + const GLuint stride = input->stride; + GLboolean *space = (GLboolean *)get_space(ctx, count + CLIPVERTS); + GLboolean *bptr = space; + GLuint i; + + for (i = 0; i < count; i++) { + *bptr++ = ((GLfloat *)ptr)[0] == 1.0; + ptr += stride; + } + + return space; +} + + +static void bind_inputs( struct gl_context *ctx, + const struct gl_client_array *inputs[], + GLint count, + struct gl_buffer_object **bo, + GLuint *nr_bo ) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + GLuint i; + + /* Map all the VBOs + */ + for (i = 0; i < VERT_ATTRIB_MAX; i++) { + const void *ptr; + + if (inputs[i]->BufferObj->Name) { + if (!inputs[i]->BufferObj->Pointer) { + bo[*nr_bo] = inputs[i]->BufferObj; + (*nr_bo)++; + ctx->Driver.MapBuffer(ctx, + GL_ARRAY_BUFFER, + GL_READ_ONLY_ARB, + inputs[i]->BufferObj); + + assert(inputs[i]->BufferObj->Pointer); + } + + ptr = ADD_POINTERS(inputs[i]->BufferObj->Pointer, + inputs[i]->Ptr); + } + else + ptr = inputs[i]->Ptr; + + /* Just make sure the array is floating point, otherwise convert to + * temporary storage. + * + * XXX: remove the GLvector4f type at some stage and just use + * client arrays. + */ + _tnl_import_array(ctx, i, count, inputs[i], ptr); + } + + /* We process only the vertices between min & max index: + */ + VB->Count = count; + + /* These should perhaps be part of _TNL_ATTRIB_* */ + VB->BackfaceColorPtr = NULL; + VB->BackfaceIndexPtr = NULL; + VB->BackfaceSecondaryColorPtr = NULL; + + /* Clipping and drawing code still requires this to be a packed + * array of ubytes which can be written into. TODO: Fix and + * remove. + */ + if (ctx->Polygon.FrontMode != GL_FILL || + ctx->Polygon.BackMode != GL_FILL) + { + VB->EdgeFlag = _tnl_import_edgeflag( ctx, + VB->AttribPtr[_TNL_ATTRIB_EDGEFLAG], + VB->Count ); + } + else { + /* the data previously pointed to by EdgeFlag may have been freed */ + VB->EdgeFlag = NULL; + } +} + + +/* Translate indices to GLuints and store in VB->Elts. + */ +static void bind_indices( struct gl_context *ctx, + const struct _mesa_index_buffer *ib, + struct gl_buffer_object **bo, + GLuint *nr_bo) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + GLuint i; + void *ptr; + + if (!ib) { + VB->Elts = NULL; + return; + } + + if (ib->obj->Name && !ib->obj->Pointer) { + bo[*nr_bo] = ib->obj; + (*nr_bo)++; + ctx->Driver.MapBuffer(ctx, + GL_ELEMENT_ARRAY_BUFFER, + GL_READ_ONLY_ARB, + ib->obj); + + assert(ib->obj->Pointer); + } + + ptr = ADD_POINTERS(ib->obj->Pointer, ib->ptr); + + if (ib->type == GL_UNSIGNED_INT && VB->Primitive[0].basevertex == 0) { + VB->Elts = (GLuint *) ptr; + } + else { + GLuint *elts = (GLuint *)get_space(ctx, ib->count * sizeof(GLuint)); + VB->Elts = elts; + + if (ib->type == GL_UNSIGNED_INT) { + const GLuint *in = (GLuint *)ptr; + for (i = 0; i < ib->count; i++) + *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex; + } + else if (ib->type == GL_UNSIGNED_SHORT) { + const GLushort *in = (GLushort *)ptr; + for (i = 0; i < ib->count; i++) + *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex; + } + else { + const GLubyte *in = (GLubyte *)ptr; + for (i = 0; i < ib->count; i++) + *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex; + } + } +} + +static void bind_prims( struct gl_context *ctx, + const struct _mesa_prim *prim, + GLuint nr_prims ) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + + VB->Primitive = prim; + VB->PrimitiveCount = nr_prims; +} + +static void unmap_vbos( struct gl_context *ctx, + struct gl_buffer_object **bo, + GLuint nr_bo ) +{ + GLuint i; + for (i = 0; i < nr_bo; i++) { + ctx->Driver.UnmapBuffer(ctx, + 0, /* target -- I don't see why this would be needed */ + bo[i]); + } +} + + +void _tnl_vbo_draw_prims(struct gl_context *ctx, + const struct gl_client_array *arrays[], + const struct _mesa_prim *prim, + GLuint nr_prims, + const struct _mesa_index_buffer *ib, + GLboolean index_bounds_valid, + GLuint min_index, + GLuint max_index) +{ + if (!index_bounds_valid) + vbo_get_minmax_index(ctx, prim, ib, &min_index, &max_index); + + _tnl_draw_prims(ctx, arrays, prim, nr_prims, ib, min_index, max_index); +} + +/* This is the main entrypoint into the slimmed-down software tnl + * module. In a regular swtnl driver, this can be plugged straight + * into the vbo->Driver.DrawPrims() callback. + */ +void _tnl_draw_prims( struct gl_context *ctx, + const struct gl_client_array *arrays[], + const struct _mesa_prim *prim, + GLuint nr_prims, + const struct _mesa_index_buffer *ib, + GLuint min_index, + GLuint max_index) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + const GLuint TEST_SPLIT = 0; + const GLint max = TEST_SPLIT ? 8 : tnl->vb.Size - MAX_CLIPPED_VERTICES; + GLint max_basevertex = prim->basevertex; + GLuint i; + + /* Mesa core state should have been validated already */ + assert(ctx->NewState == 0x0); + + if (!_mesa_check_conditional_render(ctx)) + return; /* don't draw */ + + for (i = 1; i < nr_prims; i++) + max_basevertex = MAX2(max_basevertex, prim[i].basevertex); + + if (0) + { + printf("%s %d..%d\n", __FUNCTION__, min_index, max_index); + for (i = 0; i < nr_prims; i++) + printf("prim %d: %s start %d count %d\n", i, + _mesa_lookup_enum_by_nr(prim[i].mode), + prim[i].start, + prim[i].count); + } + + if (min_index) { + /* We always translate away calls with min_index != 0. + */ + vbo_rebase_prims( ctx, arrays, prim, nr_prims, ib, + min_index, max_index, + _tnl_vbo_draw_prims ); + return; + } + else if ((GLint)max_index + max_basevertex > max) { + /* The software TNL pipeline has a fixed amount of storage for + * vertices and it is necessary to split incoming drawing commands + * if they exceed that limit. + */ + struct split_limits limits; + limits.max_verts = max; + limits.max_vb_size = ~0; + limits.max_indices = ~0; + + /* This will split the buffers one way or another and + * recursively call back into this function. + */ + vbo_split_prims( ctx, arrays, prim, nr_prims, ib, + 0, max_index + prim->basevertex, + _tnl_vbo_draw_prims, + &limits ); + } + else { + /* May need to map a vertex buffer object for every attribute plus + * one for the index buffer. + */ + struct gl_buffer_object *bo[VERT_ATTRIB_MAX + 1]; + GLuint nr_bo = 0; + GLuint inst; + + for (i = 0; i < nr_prims;) { + GLuint this_nr_prims; + + /* Our SW TNL pipeline doesn't handle basevertex yet, so bind_indices + * will rebase the elements to the basevertex, and we'll only + * emit strings of prims with the same basevertex in one draw call. + */ + for (this_nr_prims = 1; i + this_nr_prims < nr_prims; + this_nr_prims++) { + if (prim[i].basevertex != prim[i + this_nr_prims].basevertex) + break; + } + + assert(prim[i].num_instances > 0); + + /* Binding inputs may imply mapping some vertex buffer objects. + * They will need to be unmapped below. + */ + for (inst = 0; inst < prim[i].num_instances; inst++) { + + bind_prims(ctx, &prim[i], this_nr_prims); + bind_inputs(ctx, arrays, max_index + prim[i].basevertex + 1, + bo, &nr_bo); + bind_indices(ctx, ib, bo, &nr_bo); + + tnl->CurInstance = inst; + TNL_CONTEXT(ctx)->Driver.RunPipeline(ctx); + + unmap_vbos(ctx, bo, nr_bo); + free_space(ctx); + } + + i += this_nr_prims; + } + } +} + -- cgit v1.2.3