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Diffstat (limited to 'src/mesa/vf/vf.c')
-rw-r--r-- | src/mesa/vf/vf.c | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/src/mesa/vf/vf.c b/src/mesa/vf/vf.c new file mode 100644 index 00000000000..cb25f2e1131 --- /dev/null +++ b/src/mesa/vf/vf.c @@ -0,0 +1,372 @@ +/* + * Copyright 2003 Tungsten Graphics, inc. + * 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 + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, 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 (including the next + * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS 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 <[email protected]> + */ + +#include "glheader.h" +#include "context.h" +#include "colormac.h" + +#include "vf.h" + +#define DBG 0 + + + +static GLboolean match_fastpath( struct vertex_fetch *vf, + const struct vf_fastpath *fp) +{ + GLuint j; + + if (vf->attr_count != fp->attr_count) + return GL_FALSE; + + for (j = 0; j < vf->attr_count; j++) + if (vf->attr[j].format != fp->attr[j].format || + vf->attr[j].inputsize != fp->attr[j].size || + vf->attr[j].vertoffset != fp->attr[j].offset) + return GL_FALSE; + + if (fp->match_strides) { + if (vf->vertex_stride != fp->vertex_stride) + return GL_FALSE; + + for (j = 0; j < vf->attr_count; j++) + if (vf->attr[j].inputstride != fp->attr[j].stride) + return GL_FALSE; + } + + return GL_TRUE; +} + +static GLboolean search_fastpath_emit( struct vertex_fetch *vf ) +{ + struct vf_fastpath *fp = vf->fastpath; + + for ( ; fp ; fp = fp->next) { + if (match_fastpath(vf, fp)) { + vf->emit = fp->func; + return GL_TRUE; + } + } + + return GL_FALSE; +} + +void vf_register_fastpath( struct vertex_fetch *vf, + GLboolean match_strides ) +{ + struct vf_fastpath *fastpath = CALLOC_STRUCT(vf_fastpath); + GLuint i; + + fastpath->vertex_stride = vf->vertex_stride; + fastpath->attr_count = vf->attr_count; + fastpath->match_strides = match_strides; + fastpath->func = vf->emit; + fastpath->attr = (struct vf_attr_type *) + _mesa_malloc(vf->attr_count * sizeof(fastpath->attr[0])); + + for (i = 0; i < vf->attr_count; i++) { + fastpath->attr[i].format = vf->attr[i].format; + fastpath->attr[i].stride = vf->attr[i].inputstride; + fastpath->attr[i].size = vf->attr[i].inputsize; + fastpath->attr[i].offset = vf->attr[i].vertoffset; + } + + fastpath->next = vf->fastpath; + vf->fastpath = fastpath; +} + + + + +/*********************************************************************** + * Build codegen functions or return generic ones: + */ +static void choose_emit_func( struct vertex_fetch *vf, + GLuint count, + GLubyte *dest) +{ + vf->emit = NULL; + + /* Does this match an existing (hardwired, codegen or known-bad) + * fastpath? + */ + if (search_fastpath_emit(vf)) { + /* Use this result. If it is null, then it is already known + * that the current state will fail for codegen and there is no + * point trying again. + */ + } + else if (vf->codegen_emit) { + vf->codegen_emit( vf ); + } + + if (!vf->emit) { + vf_generate_hardwired_emit(vf); + } + + /* Otherwise use the generic version: + */ + if (!vf->emit) + vf->emit = vf_generic_emit; + + vf->emit( vf, count, dest ); +} + + + + + +/*********************************************************************** + * Public entrypoints, mostly dispatch to the above: + */ + + + +GLuint vf_set_vertex_attributes( struct vertex_fetch *vf, + const struct vf_attr_map *map, + GLuint nr, + GLuint vertex_stride ) +{ + GLuint offset = 0; + GLuint i, j; + + assert(nr < VF_ATTRIB_MAX); + + memset(vf->lookup, 0, sizeof(vf->lookup)); + + for (j = 0, i = 0; i < nr; i++) { + const GLuint format = map[i].format; + if (format == EMIT_PAD) { + if (DBG) + _mesa_printf("%d: pad %d, offset %d\n", i, + map[i].offset, offset); + + offset += map[i].offset; + + } + else { + assert(vf->lookup[map[i].attrib] == 0); + vf->lookup[map[i].attrib] = &vf->attr[j]; + + vf->attr[j].attrib = map[i].attrib; + vf->attr[j].format = format; + vf->attr[j].insert = vf_format_info[format].insert; + vf->attr[j].extract = vf_format_info[format].extract; + vf->attr[j].vertattrsize = vf_format_info[format].attrsize; + vf->attr[j].vertoffset = offset; + + if (DBG) + _mesa_printf("%d: %s, offset %d\n", i, + vf_format_info[format].name, + vf->attr[j].vertoffset); + + offset += vf_format_info[format].attrsize; + j++; + } + } + + vf->attr_count = j; + vf->vertex_stride = vertex_stride ? vertex_stride : offset; + vf->emit = choose_emit_func; + + assert(vf->vertex_stride >= offset); + return vf->vertex_stride; +} + + + +void vf_set_vp_matrix( struct vertex_fetch *vf, + const GLfloat *viewport ) +{ + assert(vf->allow_viewport_emits); + + /* scale */ + vf->vp[0] = viewport[MAT_SX]; + vf->vp[1] = viewport[MAT_SY]; + vf->vp[2] = viewport[MAT_SZ]; + vf->vp[3] = 1.0; + + /* translate */ + vf->vp[4] = viewport[MAT_TX]; + vf->vp[5] = viewport[MAT_TY]; + vf->vp[6] = viewport[MAT_TZ]; + vf->vp[7] = 0.0; +} + +void vf_set_vp_scale_translate( struct vertex_fetch *vf, + const GLfloat *scale, + const GLfloat *translate ) +{ + assert(vf->allow_viewport_emits); + + vf->vp[0] = scale[0]; + vf->vp[1] = scale[1]; + vf->vp[2] = scale[2]; + vf->vp[3] = scale[3]; + + vf->vp[4] = translate[0]; + vf->vp[5] = translate[1]; + vf->vp[6] = translate[2]; + vf->vp[7] = translate[3]; +} + + +/* Set attribute pointers, adjusted for start position: + */ +void vf_set_sources( struct vertex_fetch *vf, + GLvector4f * const sources[], + GLuint start ) +{ + struct vf_attr *a = vf->attr; + GLuint j; + + for (j = 0; j < vf->attr_count; j++) { + const GLvector4f *vptr = sources[a[j].attrib]; + + if ((a[j].inputstride != vptr->stride) || + (a[j].inputsize != vptr->size)) + vf->emit = choose_emit_func; + + a[j].inputstride = vptr->stride; + a[j].inputsize = vptr->size; + a[j].do_insert = a[j].insert[vptr->size - 1]; + a[j].inputptr = ((GLubyte *)vptr->data) + start * vptr->stride; + } +} + + + +/* Emit count VB vertices to dest. + */ +void vf_emit_vertices( struct vertex_fetch *vf, + GLuint count, + void *dest ) +{ + vf->emit( vf, count, (GLubyte*) dest ); +} + + +/* Extract a named attribute from a hardware vertex. Will have to + * reverse any viewport transformation, swizzling or other conversions + * which may have been applied. + * + * This is mainly required for on-the-fly vertex translations to + * swrast format. + */ +void vf_get_attr( struct vertex_fetch *vf, + const void *vertex, + GLenum attr, + const GLfloat *dflt, + GLfloat *dest ) +{ + const struct vf_attr *a = vf->attr; + const GLuint attr_count = vf->attr_count; + GLuint j; + + for (j = 0; j < attr_count; j++) { + if (a[j].attrib == attr) { + a[j].extract( &a[j], dest, (GLubyte *)vertex + a[j].vertoffset ); + return; + } + } + + /* Else return the value from ctx->Current. + */ + _mesa_memcpy( dest, dflt, 4*sizeof(GLfloat)); +} + + + + +struct vertex_fetch *vf_create( GLboolean allow_viewport_emits ) +{ + struct vertex_fetch *vf = CALLOC_STRUCT(vertex_fetch); + GLuint i; + + for (i = 0; i < VF_ATTRIB_MAX; i++) + vf->attr[i].vf = vf; + + vf->allow_viewport_emits = allow_viewport_emits; + + switch(CHAN_TYPE) { + case GL_UNSIGNED_BYTE: + vf->chan_scale[0] = 255.0; + vf->chan_scale[1] = 255.0; + vf->chan_scale[2] = 255.0; + vf->chan_scale[3] = 255.0; + break; + case GL_UNSIGNED_SHORT: + vf->chan_scale[0] = 65535.0; + vf->chan_scale[1] = 65535.0; + vf->chan_scale[2] = 65535.0; + vf->chan_scale[3] = 65535.0; + break; + default: + vf->chan_scale[0] = 1.0; + vf->chan_scale[1] = 1.0; + vf->chan_scale[2] = 1.0; + vf->chan_scale[3] = 1.0; + break; + } + + vf->identity[0] = 0.0; + vf->identity[1] = 0.0; + vf->identity[2] = 0.0; + vf->identity[3] = 1.0; + + vf->codegen_emit = NULL; + +#ifdef USE_SSE_ASM + if (!_mesa_getenv("MESA_NO_CODEGEN")) + vf->codegen_emit = vf_generate_sse_emit; +#endif + + return vf; +} + + +void vf_destroy( struct vertex_fetch *vf ) +{ + struct vf_fastpath *fp, *tmp; + + for (fp = vf->fastpath ; fp ; fp = tmp) { + tmp = fp->next; + FREE(fp->attr); + + /* KW: At the moment, fp->func is constrained to be allocated by + * _mesa_exec_alloc(), as the hardwired fastpaths in + * t_vertex_generic.c are handled specially. It would be nice + * to unify them, but this probably won't change until this + * module gets another overhaul. + */ + _mesa_exec_free((void *) fp->func); + FREE(fp); + } + + vf->fastpath = NULL; + FREE(vf); +} |