1 /**************************************************************************
3 * Copyright 2005 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "main/context.h"
29 #include "main/glheader.h"
30 #include "main/enums.h"
31 #include "main/imports.h"
32 #include "main/mfeatures.h"
33 #include "main/mtypes.h"
34 #include "main/dispatch.h"
35 #include "glapi/glapi.h"
37 #include "vbo_context.h"
43 typedef void (*attr_func)( struct gl_context *ctx, GLint target, const GLfloat * );
46 /* This file makes heavy use of the aliasing of NV vertex attributes
47 * with the legacy attributes, and also with ARB and Material
48 * attributes as currently implemented.
50 static void VertexAttrib1fvNV(struct gl_context *ctx, GLint target, const GLfloat *v)
52 CALL_VertexAttrib1fvNV(ctx->Exec, (target, v));
55 static void VertexAttrib2fvNV(struct gl_context *ctx, GLint target, const GLfloat *v)
57 CALL_VertexAttrib2fvNV(ctx->Exec, (target, v));
60 static void VertexAttrib3fvNV(struct gl_context *ctx, GLint target, const GLfloat *v)
62 CALL_VertexAttrib3fvNV(ctx->Exec, (target, v));
65 static void VertexAttrib4fvNV(struct gl_context *ctx, GLint target, const GLfloat *v)
67 CALL_VertexAttrib4fvNV(ctx->Exec, (target, v));
70 static attr_func vert_attrfunc[4] = {
77 struct loopback_attr {
83 /* Don't emit ends and begins on wrapped primitives. Don't replay
84 * wrapped vertices. If we get here, it's probably because the
85 * precalculated wrapping is wrong.
87 static void loopback_prim( struct gl_context *ctx,
88 const GLfloat *buffer,
89 const struct _mesa_prim *prim,
92 const struct loopback_attr *la, GLuint nr )
94 GLint start = prim->start;
95 GLint end = start + prim->count;
101 printf("loopback prim %s(%s,%s) verts %d..%d\n",
102 _mesa_lookup_prim_by_nr(prim->mode),
103 prim->begin ? "begin" : "..",
104 prim->end ? "end" : "..",
109 CALL_Begin(GET_DISPATCH(), ( prim->mode ));
116 data = buffer + start * vertex_size;
118 for (j = start ; j < end ; j++) {
119 const GLfloat *tmp = data + la[0].sz;
121 for (k = 1 ; k < nr ; k++) {
122 la[k].func( ctx, la[k].target, tmp );
128 la[0].func( ctx, VBO_ATTRIB_POS, data );
133 CALL_End(GET_DISPATCH(), ());
137 /* Primitives generated by DrawArrays/DrawElements/Rectf may be
138 * caught here. If there is no primitive in progress, execute them
139 * normally, otherwise need to track and discard the generated
142 static void loopback_weak_prim( struct gl_context *ctx,
143 const struct _mesa_prim *prim )
145 /* Use the prim_weak flag to ensure that if this primitive
146 * wraps, we don't mistake future vertex_lists for part of the
147 * surrounding primitive.
149 * While this flag is set, we are simply disposing of data
150 * generated by an operation now known to be a noop.
153 ctx->Driver.CurrentExecPrimitive |= VBO_SAVE_PRIM_WEAK;
155 ctx->Driver.CurrentExecPrimitive &= ~VBO_SAVE_PRIM_WEAK;
159 void vbo_loopback_vertex_list( struct gl_context *ctx,
160 const GLfloat *buffer,
161 const GLubyte *attrsz,
162 const struct _mesa_prim *prim,
167 struct loopback_attr la[VBO_ATTRIB_MAX];
170 /* All Legacy, NV, ARB and Material attributes are routed through
171 * the NV attributes entrypoints:
173 for (i = 0 ; i < VBO_ATTRIB_MAX ; i++) {
176 la[nr].sz = attrsz[i];
177 la[nr].func = vert_attrfunc[attrsz[i]-1];
182 for (i = 0 ; i < prim_count ; i++) {
183 if ((prim[i].mode & VBO_SAVE_PRIM_WEAK) &&
184 (ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END))
186 loopback_weak_prim( ctx, &prim[i] );
190 loopback_prim( ctx, buffer, &prim[i], wrap_count, vertex_size, la, nr );
196 #endif /* FEATURE_dlist */