diff options
-rw-r--r-- | src/mesa/tnl/t_draw.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/src/mesa/tnl/t_draw.c b/src/mesa/tnl/t_draw.c new file mode 100644 index 0000000..be811ef --- /dev/null +++ b/src/mesa/tnl/t_draw.c @@ -0,0 +1,305 @@ + +/* + * 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: + * Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "glheader.h" +#include "context.h" +#include "imports.h" +#include "state.h" +#include "mtypes.h" +#include "macros.h" + +#include "t_context.h" +#include "t_pipeline.h" +#include "t_vp_build.h" +#include "t_vertex.h" +#include "tnl.h" + +#define CONVERT( TYPE, MACRO ) do { \ + GLuint i, j; \ + for (i = 0; i < count; i++) { \ + const TYPE *in = (TYPE *)ptr; \ + for (j = 0; j < sz; j++) { \ + *fptr++ = MACRO(*in); \ + in++; \ + } \ + ptr += input->StrideB; \ + } \ +} while (0) + + +static GLfloat *get_space(GLcontext *ctx, GLuint bytes) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + GLubyte *space = _mesa_malloc(bytes); + + tnl->block[tnl->nr_blocks++] = space; + return (GLfloat *)space; +} + + +static void free_space(GLcontext *ctx) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + GLuint i; + for (i = 0; i < tnl->nr_blocks; i++) + _mesa_free(tnl->block[i]); + tnl->nr_blocks = 0; +} + + +/* Adjust pointer to point at first requested element, convert to + * floating point, populate VB->AttribPtr[]. + */ +static void _tnl_import_array( GLcontext *ctx, + GLuint attrib, + GLuint start, + GLuint end, + const struct gl_client_array *input, + const char *ptr ) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + const GLuint count = end - start; + GLuint stride = input->StrideB; + + ptr += start * stride; + + if (input->Type != GL_FLOAT) { + const GLuint sz = input->Size; + GLfloat *fptr = get_space(ctx, count * sz * sizeof(GLfloat)); + + switch (input->Type) { + case GL_BYTE: + CONVERT(GLbyte, BYTE_TO_FLOAT); + break; + case GL_UNSIGNED_BYTE: + 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; + default: + assert(0); + break; + } + + ptr = (const char *)fptr; + 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<<input->Size)-1) | + VEC_NOT_WRITEABLE | + (stride == 4*sizeof(GLfloat) ? 0 : VEC_BAD_STRIDE)); + + VB->AttribPtr[attrib]->storage = NULL; +} + + +static void bind_inputs( GLcontext *ctx, + const struct gl_client_array *inputs[], + GLint start, GLint end, + 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. Rebase arrays so that 'start' becomes + * element zero. + * + * XXX: remove the GLvector4f type at some stage and just use + * client arrays. + */ + _tnl_import_array(ctx, i, start, end, inputs[i], ptr); + } + + /* Legacy pointers -- remove one day. + */ + VB->ObjPtr = VB->AttribPtr[_TNL_ATTRIB_POS]; + VB->NormalPtr = VB->AttribPtr[_TNL_ATTRIB_NORMAL]; + VB->ColorPtr[0] = VB->AttribPtr[_TNL_ATTRIB_COLOR0]; + VB->ColorPtr[1] = NULL; + VB->IndexPtr[0] = VB->AttribPtr[_TNL_ATTRIB_COLOR_INDEX]; + VB->IndexPtr[1] = NULL; + VB->SecondaryColorPtr[0] = VB->AttribPtr[_TNL_ATTRIB_COLOR1]; + VB->SecondaryColorPtr[1] = NULL; + VB->FogCoordPtr = VB->AttribPtr[_TNL_ATTRIB_FOG]; + + for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) { + VB->TexCoordPtr[i] = VB->AttribPtr[_TNL_ATTRIB_TEX0 + i]; + } + +#if 0 + /* odd-ball vertex attribute + */ + if (ctx->Polygon.FrontMode != GL_FILL || + ctx->Polygon.BackMode != GL_FILL) + { + VB->EdgeFlag = _tnl_import_edgeflag( ctx, VB->AttribPtr[_TNL_ATTRIB_EDGEFLAG]); + } +#endif + +} + + +/* Translate indices to GLuints and store in VB->Elts. + */ +static void bind_indicies( GLcontext *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; + + if (!ib) + 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); + } + + VB->Elts = (GLuint *)ADD_POINTERS(ib->obj->Pointer, + ib->ptr); + + VB->Elts += ib->rebase; + + switch (ib->type) { + case GL_UNSIGNED_INT: + return; + case GL_UNSIGNED_SHORT: + break; + case GL_UNSIGNED_BYTE: + break; + } +} + +static void unmap_vbos( GLcontext *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]); + } +} + + + +/* 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( GLcontext *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); + struct vertex_buffer *VB = &tnl->vb; + + /* 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; + + /* Binding inputs may imply mapping some vertex buffer objects. + * They will need to be unmapped below. + */ + bind_inputs(ctx, arrays, min_index, max_index, bo, &nr_bo); + bind_indicies(ctx, ib, bo, &nr_bo); + + VB->Primitive = prim; + VB->PrimitiveCount = nr_prims; + VB->Count = max_index - min_index; + + TNL_CONTEXT(ctx)->Driver.RunPipeline(ctx); + + unmap_vbos(ctx, bo, nr_bo); + free_space(ctx); +} + |