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-rw-r--r--src/mesa/vf/vf.c372
1 files changed, 372 insertions, 0 deletions
diff --git a/src/mesa/vf/vf.c b/src/mesa/vf/vf.c
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+++ b/src/mesa/vf/vf.c
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+/*
+ * 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);
+}
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