749 lines
20 KiB
C
749 lines
20 KiB
C
/* $Id: t_vb_render.c,v 1.8 2001/01/08 17:41:15 keithw Exp $ */
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/*
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* Mesa 3-D graphics library
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* Version: 3.5
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*
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* Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Author:
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* Keith Whitwell <keithw@valinux.com>
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*/
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/*
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* Render whole vertex buffers, including projection of vertices from
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* clip space and clipping of primitives.
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*
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* This file makes calls to project vertices and to the point, line
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* and triangle rasterizers via the function pointers:
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*
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* context->Driver.BuildProjectedVertices()
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*
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* context->Driver.PointsFunc()
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* context->Driver.LineFunc()
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* context->Driver.TriangleFunc()
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* context->Driver.QuadFunc()
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*
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* context->Driver.RenderTabVerts[]
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* context->Driver.RenderTabElts[]
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*
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* None of these may be null.
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*/
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#include "glheader.h"
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#include "context.h"
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#include "colormac.h"
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#include "macros.h"
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#include "mem.h"
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#include "mtypes.h"
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#include "mmath.h"
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#include "math/m_matrix.h"
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#include "math/m_xform.h"
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#include "t_pipeline.h"
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typedef void (*clip_line_func)( GLcontext *ctx,
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GLuint i, GLuint j,
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GLubyte mask);
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typedef void (*clip_poly_func)( GLcontext *ctx,
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GLuint n, GLuint vlist[],
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GLubyte mask );
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struct render_stage_data {
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/* Clipping functions for current state.
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*/
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interp_func interp; /* Clip interpolation function */
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copy_pv_func copypv; /* Flatshade fixup function */
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GLuint _ClipInputs; /* Inputs referenced by interpfunc */
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};
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#define RENDER_STAGE_DATA(stage) ((struct render_stage_data *)stage->private)
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/**********************************************************************/
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/* Interpolate between pairs of vertices */
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/**********************************************************************/
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#define LINTERP_SZ( t, vec, to, a, b, sz ) \
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do { \
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switch (sz) { \
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case 4: vec[to][3] = LINTERP( t, vec[a][3], vec[b][3] ); \
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case 3: vec[to][2] = LINTERP( t, vec[a][2], vec[b][2] ); \
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case 2: vec[to][1] = LINTERP( t, vec[a][1], vec[b][1] ); \
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case 1: vec[to][0] = LINTERP( t, vec[a][0], vec[b][0] ); \
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} \
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} while(0)
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#if 1
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#define LINTERP_RGBA(nr, t, out, a, b) { \
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int i; \
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for (i = 0; i < nr; i++) { \
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GLfloat fa = CHAN_TO_FLOAT(a[i]); \
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GLfloat fb = CHAN_TO_FLOAT(b[i]); \
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GLfloat fo = LINTERP(t, fa, fb); \
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CLAMPED_FLOAT_TO_CHAN(out[i], fo); \
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} \
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}
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#else
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#define LINTERP_RGBA(nr, t, out, a, b) { \
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int n; \
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const GLuint ti = FloatToInt(t*256.0F); \
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const GLubyte *Ib = (const GLubyte *)&a[0]; \
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const GLubyte *Jb = (const GLubyte *)&b[0]; \
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GLubyte *Ob = (GLubyte *)&out[0]; \
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\
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for (n = 0 ; n < nr ; n++) \
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Ob[n] = (GLubyte) (Ib[n] + ((ti * (Jb[n] - Ib[n]))/256)); \
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}
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#endif
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#define INTERP_RGBA 0x1
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#define INTERP_TEX 0x2
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#define INTERP_INDEX 0x4
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#define INTERP_SPEC 0x8
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#define INTERP_FOG 0x10
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#define INTERP_EDGE 0x20
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#define MAX_INTERP 0x40
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static interp_func interp_tab[MAX_INTERP];
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static copy_pv_func copy_tab[MAX_INTERP];
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#define IND (0)
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#define NAME interp_none
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#include "t_vb_interptmp.h"
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#define IND (INTERP_FOG)
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#define NAME interp_FOG
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#include "t_vb_interptmp.h"
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#define IND (INTERP_TEX)
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#define NAME interp_TEX
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#include "t_vb_interptmp.h"
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#define IND (INTERP_FOG|INTERP_TEX)
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#define NAME interp_FOG_TEX
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#include "t_vb_interptmp.h"
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#define IND (INTERP_EDGE)
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#define NAME interp_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_FOG|INTERP_EDGE)
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#define NAME interp_FOG_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_TEX|INTERP_EDGE)
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#define NAME interp_TEX_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_FOG|INTERP_TEX|INTERP_EDGE)
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#define NAME interp_FOG_TEX_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA)
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#define NAME interp_RGBA
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_SPEC)
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#define NAME interp_RGBA_SPEC
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_FOG)
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#define NAME interp_RGBA_FOG
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_FOG)
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#define NAME interp_RGBA_SPEC_FOG
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_TEX)
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#define NAME interp_RGBA_TEX
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_TEX)
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#define NAME interp_RGBA_SPEC_TEX
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_FOG|INTERP_TEX)
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#define NAME interp_RGBA_FOG_TEX
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_TEX)
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#define NAME interp_RGBA_SPEC_FOG_TEX
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#include "t_vb_interptmp.h"
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#define IND (INTERP_INDEX)
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#define NAME interp_INDEX
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#include "t_vb_interptmp.h"
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#define IND (INTERP_FOG|INTERP_INDEX)
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#define NAME interp_FOG_INDEX
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#include "t_vb_interptmp.h"
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#define IND (INTERP_TEX|INTERP_INDEX)
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#define NAME interp_TEX_INDEX
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#include "t_vb_interptmp.h"
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#define IND (INTERP_FOG|INTERP_TEX|INTERP_INDEX)
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#define NAME interp_FOG_TEX_INDEX
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_EDGE)
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#define NAME interp_RGBA_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_EDGE)
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#define NAME interp_RGBA_SPEC_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_FOG|INTERP_EDGE)
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#define NAME interp_RGBA_FOG_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_EDGE)
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#define NAME interp_RGBA_SPEC_FOG_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_TEX|INTERP_EDGE)
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#define NAME interp_RGBA_TEX_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_TEX|INTERP_EDGE)
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#define NAME interp_RGBA_SPEC_TEX_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_FOG|INTERP_TEX|INTERP_EDGE)
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#define NAME interp_RGBA_FOG_TEX_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_TEX|INTERP_EDGE)
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#define NAME interp_RGBA_SPEC_FOG_TEX_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_INDEX|INTERP_EDGE)
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#define NAME interp_INDEX_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_FOG|INTERP_INDEX|INTERP_EDGE)
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#define NAME interp_FOG_INDEX_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_TEX|INTERP_INDEX|INTERP_EDGE)
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#define NAME interp_TEX_INDEX_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_FOG|INTERP_TEX|INTERP_INDEX|INTERP_EDGE)
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#define NAME interp_FOG_TEX_INDEX_EDGE
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#include "t_vb_interptmp.h"
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#define IND (INTERP_RGBA)
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#define NAME copy_RGBA
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#include "t_vb_flattmp.h"
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#define IND (INTERP_RGBA|INTERP_SPEC)
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#define NAME copy_RGBA_SPEC
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#include "t_vb_flattmp.h"
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#define IND (INTERP_INDEX)
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#define NAME copy_INDEX
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#include "t_vb_flattmp.h"
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static void interp_invalid( GLcontext *ctx,
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GLfloat t,
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GLuint dst, GLuint in, GLuint out,
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GLboolean boundary )
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{
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(void)(ctx && t && in && out && boundary);
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fprintf(stderr, "Invalid interpolation function in t_vbrender.c\n");
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}
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static void copy_invalid( GLcontext *ctx, GLuint dst, GLuint src )
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{
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(void)(ctx && dst && src);
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fprintf(stderr, "Invalid copy function in t_vbrender.c\n");
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}
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static void interp_init( void )
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{
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GLuint i;
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/* Use the maximal function as the default. I don't believe any of
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* the non-implemented combinations are reachable, but this gives
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* some safety from crashes.
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*/
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for (i = 0 ; i < Elements(interp_tab) ; i++) {
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interp_tab[i] = interp_invalid;
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copy_tab[i] = copy_invalid;
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}
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interp_tab[0] = interp_none;
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interp_tab[INTERP_FOG] = interp_FOG;
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interp_tab[INTERP_TEX] = interp_TEX;
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interp_tab[INTERP_FOG|INTERP_TEX] = interp_FOG_TEX;
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interp_tab[INTERP_EDGE] = interp_EDGE;
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interp_tab[INTERP_FOG|INTERP_EDGE] = interp_FOG_EDGE;
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interp_tab[INTERP_TEX|INTERP_EDGE] = interp_TEX_EDGE;
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interp_tab[INTERP_FOG|INTERP_TEX|INTERP_EDGE] = interp_FOG_TEX_EDGE;
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interp_tab[INTERP_RGBA] = interp_RGBA;
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interp_tab[INTERP_RGBA|INTERP_SPEC] = interp_RGBA_SPEC;
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interp_tab[INTERP_RGBA|INTERP_FOG] = interp_RGBA_FOG;
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interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_FOG] = interp_RGBA_SPEC_FOG;
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interp_tab[INTERP_RGBA|INTERP_TEX] = interp_RGBA_TEX;
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interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_TEX] = interp_RGBA_SPEC_TEX;
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interp_tab[INTERP_RGBA|INTERP_FOG|INTERP_TEX] = interp_RGBA_FOG_TEX;
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interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_TEX] =
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interp_RGBA_SPEC_FOG_TEX;
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interp_tab[INTERP_INDEX] = interp_INDEX;
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interp_tab[INTERP_FOG|INTERP_INDEX] = interp_FOG_INDEX;
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interp_tab[INTERP_TEX|INTERP_INDEX] = interp_TEX_INDEX;
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interp_tab[INTERP_FOG|INTERP_TEX|INTERP_INDEX] = interp_FOG_TEX_INDEX;
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interp_tab[INTERP_RGBA|INTERP_EDGE] = interp_RGBA_EDGE;
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interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_EDGE] = interp_RGBA_SPEC_EDGE;
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interp_tab[INTERP_RGBA|INTERP_FOG|INTERP_EDGE] = interp_RGBA_FOG_EDGE;
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interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_EDGE] =
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interp_RGBA_SPEC_FOG_EDGE;
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interp_tab[INTERP_RGBA|INTERP_TEX|INTERP_EDGE] = interp_RGBA_TEX_EDGE;
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interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_TEX|INTERP_EDGE] =
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interp_RGBA_SPEC_TEX_EDGE;
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interp_tab[INTERP_RGBA|INTERP_FOG|INTERP_TEX|INTERP_EDGE] =
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interp_RGBA_FOG_TEX_EDGE;
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interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_TEX|INTERP_EDGE] =
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interp_RGBA_SPEC_FOG_TEX_EDGE;
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interp_tab[INTERP_INDEX|INTERP_EDGE] = interp_INDEX_EDGE;
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interp_tab[INTERP_FOG|INTERP_INDEX|INTERP_EDGE] = interp_FOG_INDEX_EDGE;
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interp_tab[INTERP_TEX|INTERP_INDEX|INTERP_EDGE] = interp_TEX_INDEX_EDGE;
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interp_tab[INTERP_FOG|INTERP_TEX|INTERP_INDEX|INTERP_EDGE] =
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interp_FOG_TEX_INDEX_EDGE;
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copy_tab[INTERP_RGBA] = copy_RGBA;
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copy_tab[INTERP_RGBA|INTERP_SPEC] = copy_RGBA_SPEC;
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copy_tab[INTERP_INDEX] = copy_INDEX;
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}
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/**********************************************************************/
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/* Clip single primitives */
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/**********************************************************************/
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#if defined(USE_IEEE)
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#define NEGATIVE(x) ((*(GLuint *)&x) & (1<<31))
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#define DIFFERENT_SIGNS(x,y) (((*(GLuint *)&x)^(*(GLuint *)&y)) & (1<<31))
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#else
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#define NEGATIVE(x) (x < 0)
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#define DIFFERENT_SIGNS(x,y) (x * y <= 0 && x - y != 0)
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/* Could just use (x*y<0) except for the flatshading requirements.
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* Maybe there's a better way?
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*/
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#endif
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#define W(i) coord[i][3]
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#define Z(i) coord[i][2]
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#define Y(i) coord[i][1]
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#define X(i) coord[i][0]
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#define SIZE 4
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#define TAG(x) x##_4
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#include "t_vb_cliptmp.h"
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#define W(i) 1.0
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#define Z(i) coord[i][2]
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#define Y(i) coord[i][1]
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#define X(i) coord[i][0]
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#define SIZE 3
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#define TAG(x) x##_3
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#include "t_vb_cliptmp.h"
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#define W(i) 1.0
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#define Z(i) 0.0
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#define Y(i) coord[i][1]
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#define X(i) coord[i][0]
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#define SIZE 2
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#define TAG(x) x##_2
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#include "t_vb_cliptmp.h"
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static clip_poly_func clip_poly_tab[5] = {
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0,
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0,
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clip_polygon_2,
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clip_polygon_3,
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clip_polygon_4
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};
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static clip_line_func clip_line_tab[5] = {
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0,
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0,
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clip_line_2,
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clip_line_3,
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clip_line_4
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};
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/**********************************************************************/
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/* Clip and render whole begin/end objects */
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/**********************************************************************/
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#define NEED_EDGEFLAG_SETUP (ctx->_TriangleCaps & DD_TRI_UNFILLED)
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#define EDGEFLAG_GET(idx) VB->EdgeFlag[idx]
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#define EDGEFLAG_SET(idx, val) VB->EdgeFlag[idx] = val
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/* Vertices, with the possibility of clipping.
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*/
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#define RENDER_POINTS( start, count ) \
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ctx->Driver.PointsFunc( ctx, start, count )
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#define RENDER_LINE( v1, v2 ) \
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do { \
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GLubyte c1 = mask[v1], c2 = mask[v2]; \
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GLubyte ormask = c1|c2; \
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if (!ormask) \
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LineFunc( ctx, v1, v2 ); \
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else if (!(c1 & c2 & 0x3f)) \
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clip_line_tab[sz]( ctx, v1, v2, ormask ); \
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} while (0)
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#define RENDER_TRI( v1, v2, v3 ) \
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do { \
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GLubyte c1 = mask[v1], c2 = mask[v2], c3 = mask[v3]; \
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GLubyte ormask = c1|c2|c3; \
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if (!ormask) \
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TriangleFunc( ctx, v1, v2, v3 ); \
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else if (!(c1 & c2 & c3 & 0x3f)) { \
|
|
GLuint vlist[MAX_CLIPPED_VERTICES]; \
|
|
ASSIGN_3V(vlist, v3, v1, v2 ); \
|
|
clip_poly_tab[sz]( ctx, 3, vlist, ormask ); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define RENDER_QUAD( v1, v2, v3, v4 ) \
|
|
do { \
|
|
GLubyte c1 = mask[v1], c2 = mask[v2]; \
|
|
GLubyte c3 = mask[v3], c4 = mask[v4]; \
|
|
GLubyte ormask = c1|c2|c3|c4; \
|
|
if (!ormask) \
|
|
QuadFunc( ctx, v1, v2, v3, v4 ); \
|
|
else if (!(c1 & c2 & c3 & c4 & 0x3f)) { \
|
|
GLuint vlist[MAX_CLIPPED_VERTICES]; \
|
|
ASSIGN_4V(vlist, v4, v1, v2, v3 ); \
|
|
clip_poly_tab[sz]( ctx, 4, vlist, ormask ); \
|
|
} \
|
|
} while (0)
|
|
|
|
|
|
#define LOCAL_VARS \
|
|
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; \
|
|
const GLuint * const elt = VB->Elts; \
|
|
const GLubyte *mask = VB->ClipMask; \
|
|
const GLuint sz = VB->ClipPtr->size; \
|
|
const line_func LineFunc = ctx->Driver.LineFunc; \
|
|
const triangle_func TriangleFunc = ctx->Driver.TriangleFunc; \
|
|
const quad_func QuadFunc = ctx->Driver.QuadFunc; \
|
|
(void) (LineFunc && TriangleFunc && QuadFunc); \
|
|
(void) elt; (void) mask; (void) sz;
|
|
|
|
#define TAG(x) clip_##x##_verts
|
|
#define INIT(x) ctx->Driver.RenderPrimitive( ctx, x )
|
|
#define RESET_STIPPLE ctx->Driver.ResetLineStipple( ctx )
|
|
#define RESET_OCCLUSION ctx->OcclusionResult = GL_TRUE;
|
|
#define PRESERVE_VB_DEFS
|
|
#include "t_vb_rendertmp.h"
|
|
|
|
|
|
|
|
/* Elts, with the possibility of clipping.
|
|
*/
|
|
#undef ELT
|
|
#undef TAG
|
|
#define ELT(x) elt[x]
|
|
#define TAG(x) clip_##x##_elts
|
|
#include "t_vb_rendertmp.h"
|
|
|
|
|
|
/**********************************************************************/
|
|
/* Render whole begin/end objects */
|
|
/**********************************************************************/
|
|
|
|
#define NEED_EDGEFLAG_SETUP (ctx->_TriangleCaps & DD_TRI_UNFILLED)
|
|
#define EDGEFLAG_GET(idx) VB->EdgeFlag[idx]
|
|
#define EDGEFLAG_SET(idx, val) VB->EdgeFlag[idx] = val
|
|
|
|
|
|
/* Vertices, no clipping.
|
|
*/
|
|
#define RENDER_POINTS( start, count ) \
|
|
ctx->Driver.PointsFunc( ctx, start, count )
|
|
|
|
#define RENDER_LINE( v1, v2 ) \
|
|
LineFunc( ctx, v1, v2 )
|
|
|
|
#define RENDER_TRI( v1, v2, v3 ) \
|
|
TriangleFunc( ctx, v1, v2, v3 )
|
|
|
|
#define RENDER_QUAD( v1, v2, v3, v4 ) \
|
|
QuadFunc( ctx, v1, v2, v3, v4 )
|
|
|
|
#define TAG(x) _tnl_##x##_verts
|
|
|
|
#define LOCAL_VARS \
|
|
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; \
|
|
const GLuint * const elt = VB->Elts; \
|
|
const line_func LineFunc = ctx->Driver.LineFunc; \
|
|
const triangle_func TriangleFunc = ctx->Driver.TriangleFunc; \
|
|
const quad_func QuadFunc = ctx->Driver.QuadFunc; \
|
|
(void) (LineFunc && TriangleFunc && QuadFunc); \
|
|
(void) elt;
|
|
|
|
#define RESET_STIPPLE ctx->Driver.ResetLineStipple( ctx )
|
|
#define RESET_OCCLUSION ctx->OcclusionResult = GL_TRUE;
|
|
#define INIT(x) ctx->Driver.RenderPrimitive( ctx, x )
|
|
#define RENDER_TAB_QUALIFIER
|
|
#define PRESERVE_VB_DEFS
|
|
#include "t_vb_rendertmp.h"
|
|
|
|
|
|
/* Elts, no clipping.
|
|
*/
|
|
#undef ELT
|
|
#define TAG(x) _tnl_##x##_elts
|
|
#define ELT(x) elt[x]
|
|
#include "t_vb_rendertmp.h"
|
|
|
|
|
|
|
|
|
|
/**********************************************************************/
|
|
/* Clip and render whole vertex buffers */
|
|
/**********************************************************************/
|
|
|
|
|
|
static GLboolean run_render( GLcontext *ctx,
|
|
struct gl_pipeline_stage *stage )
|
|
{
|
|
TNLcontext *tnl = TNL_CONTEXT(ctx);
|
|
struct vertex_buffer *VB = &tnl->vb;
|
|
GLuint new_inputs = stage->changed_inputs;
|
|
render_func *tab;
|
|
GLint pass = 0;
|
|
|
|
VB->interpfunc = RENDER_STAGE_DATA(stage)->interp;
|
|
VB->copypvfunc = RENDER_STAGE_DATA(stage)->copypv;
|
|
|
|
/* Allow the drivers to lock before projected verts are built so
|
|
* that window coordinates are guarenteed not to change before
|
|
* rendering.
|
|
*/
|
|
if (ctx->Driver.RenderStart)
|
|
ctx->Driver.RenderStart( ctx );
|
|
|
|
if (VB->ClipOrMask) {
|
|
tab = VB->Elts ? clip_render_tab_elts : clip_render_tab_verts;
|
|
|
|
if (new_inputs & VB->importable_data)
|
|
VB->import_data( ctx,
|
|
new_inputs & VB->importable_data,
|
|
VEC_NOT_WRITEABLE|VEC_BAD_STRIDE);
|
|
}
|
|
else {
|
|
tab = VB->Elts ? ctx->Driver.RenderTabElts : ctx->Driver.RenderTabVerts;
|
|
}
|
|
|
|
ctx->Driver.BuildProjectedVertices( ctx, 0, VB->Count, new_inputs );
|
|
|
|
do
|
|
{
|
|
GLuint i, length, flags = 0;
|
|
for (i = 0 ; !(flags & PRIM_LAST) ; i += length)
|
|
{
|
|
flags = VB->Primitive[i];
|
|
length= VB->PrimitiveLength[i];
|
|
ASSERT(length || (flags & PRIM_LAST));
|
|
ASSERT((flags & PRIM_MODE_MASK) <= GL_POLYGON+1);
|
|
if (length)
|
|
tab[flags & PRIM_MODE_MASK]( ctx, i, i + length, flags );
|
|
}
|
|
} while (ctx->Driver.MultipassFunc &&
|
|
ctx->Driver.MultipassFunc( ctx, ++pass ));
|
|
|
|
if (ctx->Driver.RenderFinish)
|
|
ctx->Driver.RenderFinish( ctx );
|
|
|
|
return GL_FALSE; /* finished the pipe */
|
|
}
|
|
|
|
|
|
/**********************************************************************/
|
|
/* Render pipeline stage */
|
|
/**********************************************************************/
|
|
|
|
|
|
|
|
/* Quite a bit of work involved in finding out the inputs for the
|
|
* render stage. This function also identifies which vertex
|
|
* interpolation function to use, as these are essentially the same
|
|
* question.
|
|
*/
|
|
static void check_render( GLcontext *ctx, struct gl_pipeline_stage *stage )
|
|
{
|
|
struct render_stage_data *store = RENDER_STAGE_DATA(stage);
|
|
GLuint interp = 0;
|
|
GLuint copy = 0;
|
|
GLuint inputs = VERT_CLIP;
|
|
GLuint i;
|
|
|
|
if (ctx->Visual.RGBAflag)
|
|
{
|
|
interp |= INTERP_RGBA;
|
|
inputs |= VERT_RGBA;
|
|
|
|
if (ctx->_TriangleCaps & DD_SEPERATE_SPECULAR) {
|
|
interp |= INTERP_SPEC;
|
|
inputs |= VERT_SPEC_RGB;
|
|
}
|
|
|
|
if (ctx->Texture._ReallyEnabled) {
|
|
interp |= INTERP_TEX;
|
|
|
|
for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++) {
|
|
if (ctx->Texture.Unit[i]._ReallyEnabled)
|
|
inputs |= VERT_TEX(i);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
interp |= INTERP_INDEX;
|
|
inputs |= VERT_INDEX;
|
|
}
|
|
|
|
if (ctx->Point._Attenuated)
|
|
inputs |= VERT_POINT_SIZE;
|
|
|
|
/* How do drivers turn this off?
|
|
*/
|
|
if (ctx->Fog.Enabled) {
|
|
interp |= INTERP_FOG;
|
|
inputs |= VERT_FOG_COORD;
|
|
}
|
|
|
|
if (ctx->_TriangleCaps & DD_TRI_UNFILLED) {
|
|
inputs |= VERT_EDGE;
|
|
interp |= INTERP_EDGE;
|
|
}
|
|
|
|
if (ctx->RenderMode==GL_FEEDBACK) {
|
|
interp |= INTERP_TEX;
|
|
inputs |= VERT_TEX_ANY;
|
|
}
|
|
|
|
if (ctx->_TriangleCaps & DD_FLATSHADE) {
|
|
copy = interp & (INTERP_RGBA|INTERP_SPEC|INTERP_INDEX);
|
|
interp &= ~copy;
|
|
}
|
|
|
|
store->copypv = copy_tab[copy];
|
|
store->interp = interp_tab[interp];
|
|
stage->inputs = inputs;
|
|
}
|
|
|
|
|
|
/* Called the first time stage->check() is invoked.
|
|
*/
|
|
static void alloc_render_data( GLcontext *ctx,
|
|
struct gl_pipeline_stage *stage )
|
|
{
|
|
struct render_stage_data *store;
|
|
static GLboolean first_time = 1;
|
|
|
|
if (first_time) {
|
|
interp_init();
|
|
first_time = 0;
|
|
}
|
|
|
|
stage->private = MALLOC(sizeof(*store));
|
|
if (!stage->private)
|
|
return;
|
|
|
|
/* Now do the check.
|
|
*/
|
|
stage->check = check_render;
|
|
stage->check( ctx, stage );
|
|
}
|
|
|
|
|
|
|
|
static void dtr( struct gl_pipeline_stage *stage )
|
|
{
|
|
struct render_stage_data *store = RENDER_STAGE_DATA(stage);
|
|
if (store) {
|
|
FREE( store );
|
|
stage->private = 0;
|
|
}
|
|
}
|
|
|
|
|
|
const struct gl_pipeline_stage _tnl_render_stage =
|
|
{
|
|
"render",
|
|
(_NEW_BUFFERS |
|
|
_DD_NEW_SEPERATE_SPECULAR |
|
|
_DD_NEW_FLATSHADE |
|
|
_NEW_TEXTURE|
|
|
_NEW_LIGHT|
|
|
_NEW_POINT|
|
|
_NEW_FOG|
|
|
_DD_NEW_TRI_UNFILLED |
|
|
_NEW_RENDERMODE), /* re-check (new inputs, interp function) */
|
|
0, /* re-run (always runs) */
|
|
GL_TRUE, /* active */
|
|
0, 0, /* inputs (set in check_render), outputs */
|
|
0, 0, /* changed_inputs, private */
|
|
dtr, /* destructor */
|
|
alloc_render_data, /* check - initially set to alloc data */
|
|
run_render /* run */
|
|
};
|