| 1 | /* $Id: vbfill.c,v 1.2 2000-03-01 18:49:39 jeroen Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * Mesa 3-D graphics library
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| 5 | * Version: 3.1
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| 6 | *
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| 7 | * Copyright (C) 1999 Brian Paul All Rights Reserved.
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| 8 | *
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| 9 | * Permission is hereby granted, free of charge, to any person obtaining a
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| 10 | * copy of this software and associated documentation files (the "Software"),
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| 11 | * to deal in the Software without restriction, including without limitation
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| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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| 13 | * and/or sell copies of the Software, and to permit persons to whom the
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| 14 | * Software is furnished to do so, subject to the following conditions:
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| 15 | *
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| 16 | * The above copyright notice and this permission notice shall be included
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| 17 | * in all copies or substantial portions of the Software.
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| 18 | *
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| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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| 22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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| 23 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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| 25 | */
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| 26 |
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| 27 |
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| 28 |
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| 29 | #ifdef PC_HEADER
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| 30 | #include "all.h"
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| 31 | #else
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| 32 | #ifndef XFree86Server
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| 33 | #include <assert.h>
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| 34 | #include <math.h>
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| 35 | #include <stdio.h>
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| 36 | #else
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| 37 | #include "GL/xf86glx.h"
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| 38 | #endif
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| 39 | #include "types.h"
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| 40 | #include "context.h"
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| 41 | #include "enums.h"
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| 42 | #include "light.h"
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| 43 | #include "macros.h"
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| 44 | #include "matrix.h"
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| 45 | #include "mmath.h"
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| 46 | #include "varray.h"
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| 47 | #include "vb.h"
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| 48 | #include "vbcull.h"
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| 49 | #include "vbfill.h"
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| 50 | #include "vbrender.h"
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| 51 | #include "vbxform.h"
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| 52 | #include "xform.h"
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| 53 | #endif
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| 54 |
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| 55 |
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| 56 |
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| 57 | /* KW: The work of most of the functions which were in this file are
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| 58 | * now done directly by the GLVertex, GLTexCoord, GLIndex, ...,
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| 59 | * functions in api{1,2}.c. This is made possible by the fact
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| 60 | * that display lists and vertex buffers are now built the same
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| 61 | * way, so there is no need for the indirection and overhead of a
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| 62 | * function pointer.
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| 63 | */
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| 64 |
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| 65 |
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| 66 | void gl_Begin( GLcontext *ctx, GLenum p )
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| 67 | {
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| 68 | struct immediate *IM = ctx->input;
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| 69 | GLuint inflags, state;
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| 70 |
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| 71 | if (MESA_VERBOSE&VERBOSE_API) {
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| 72 | if (MESA_VERBOSE&VERBOSE_IMMEDIATE)
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| 73 | fprintf(stderr, "glBegin(IM %d) %s\n", IM->id, gl_lookup_enum_by_nr(p));
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| 74 | else
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| 75 | fprintf(stderr, "<");
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| 76 | }
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| 77 |
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| 78 | if (ctx->NewState)
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| 79 | gl_update_state( ctx ); /* should already be flushed */
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| 80 |
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| 81 | /* if only a very few slots left, might as well flush now
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| 82 | */
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| 83 | if (IM->Count > VB_MAX-4) {
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| 84 | IM->maybe_transform_vb( IM );
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| 85 | IM = ctx->input;
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| 86 | }
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| 87 |
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| 88 | state = IM->BeginState;
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| 89 | inflags = state & (VERT_BEGIN_0|VERT_BEGIN_1);
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| 90 | state |= inflags << 2; /* set error conditions */
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| 91 |
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| 92 | if (MESA_VERBOSE&VERBOSE_API)
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| 93 | fprintf(stderr, "in gl_Begin(IM %d), BeginState is %x, errors %x",
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| 94 | IM->id,
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| 95 | state,
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| 96 | inflags<<2);
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| 97 |
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| 98 | if (inflags != (VERT_BEGIN_0|VERT_BEGIN_1))
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| 99 | {
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| 100 | GLuint count = IM->Count;
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| 101 | GLuint last = IM->LastPrimitive;
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| 102 |
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| 103 | state |= (VERT_BEGIN_0|VERT_BEGIN_1);
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| 104 | IM->Flag[count] |= VERT_BEGIN;
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| 105 | IM->Primitive[count] = p;
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| 106 |
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| 107 | IM->NextPrimitive[IM->LastPrimitive] = count;
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| 108 | IM->LastPrimitive = count;
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| 109 |
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| 110 | if (IM->FlushElt) {
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| 111 | gl_exec_array_elements( ctx, IM, last, count );
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| 112 | IM->FlushElt = 0;
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| 113 | }
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| 114 | }
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| 115 |
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| 116 | if (MESA_VERBOSE&VERBOSE_API)
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| 117 | fprintf(stderr, "in gl_Begin final state %x\n", state);
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| 118 |
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| 119 | IM->BeginState = state;
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| 120 | }
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| 121 |
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| 122 |
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| 123 |
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