diff options
Diffstat (limited to 'src/mesa/tnl/t_vb_render.c')
| -rw-r--r-- | src/mesa/tnl/t_vb_render.c | 698 |
1 files changed, 698 insertions, 0 deletions
diff --git a/src/mesa/tnl/t_vb_render.c b/src/mesa/tnl/t_vb_render.c new file mode 100644 index 0000000..5707f21 --- /dev/null +++ b/src/mesa/tnl/t_vb_render.c @@ -0,0 +1,698 @@ +/* $Id: t_vb_render.c,v 1.1 2000/12/26 05:09:33 keithw Exp $ */ + +/* + * Mesa 3-D graphics library + * Version: 3.5 + * + * Copyright (C) 1999-2000 Brian Paul 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 + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL 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. + */ + + +/* + * Render whole vertex buffers, including projection of vertices from + * clip space and clipping of primitives. + * + * This file makes calls to project vertices and to the point, line + * and triangle rasterizers via the function pointers: + * + * context->Driver.BuildProjectedVertices() + * context->Driver.PointsFunc() + * context->Driver.LineFunc() + * context->Driver.TriangleFunc() + * context->Driver.QuadFunc() + * + */ + + +#include "glheader.h" +#include "context.h" +#include "colormac.h" +#include "macros.h" +#include "mem.h" +#include "mtypes.h" +#include "mmath.h" + +#include "math/m_matrix.h" +#include "math/m_xform.h" + +#include "t_pipeline.h" + + +typedef GLuint (*interp_func)( GLcontext *ctx, + GLfloat t, GLuint in, GLuint out, + GLboolean force_boundary ); + +typedef void (*clip_line_func)( GLcontext *ctx, + GLuint i, GLuint j, + GLubyte mask); + +typedef void (*clip_poly_func)( GLcontext *ctx, + GLuint n, GLuint vlist[], + GLuint pv, GLubyte mask ); + + +typedef void (*render_func)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ); + + + +struct render_stage_data { + + /* Clipping functions for current state. + */ + interp_func interp; /* Clip interpolation function */ + GLuint _ClipInputs; /* Inputs referenced by interpfunc */ + +}; + +#define RENDER_STAGE_DATA(stage) ((struct render_stage_data *)stage->private) + +static void render_poly_pv_raw_elts( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags, + GLuint pv ); + +/**********************************************************************/ +/* Interpolate between pairs of vertices */ +/**********************************************************************/ + + +#define INTERP_RGBA 0x1 +#define INTERP_TEX 0x2 +#define INTERP_INDEX 0x4 +#define INTERP_SPEC 0x8 +#define INTERP_FOG 0x10 +#define INTERP_EDGE 0x20 +#define MAX_INTERP 0x40 + + +#define LINTERP_SZ( t, vec, to, a, b, sz ) \ +do { \ + switch (sz) { \ + case 4: vec[to][3] = LINTERP( t, vec[a][3], vec[b][3] ); \ + case 3: vec[to][2] = LINTERP( t, vec[a][2], vec[b][2] ); \ + case 2: vec[to][1] = LINTERP( t, vec[a][1], vec[b][1] ); \ + case 1: vec[to][0] = LINTERP( t, vec[a][0], vec[b][0] ); \ + } \ +} while(0) + + +#if 1 + +#define LINTERP_RGBA(nr, t, out, a, b) { \ + int i; \ + for (i = 0; i < nr; i++) { \ + GLfloat fa = CHAN_TO_FLOAT(a[i]); \ + GLfloat fb = CHAN_TO_FLOAT(b[i]); \ + GLfloat fo = LINTERP(t, fa, fb); \ + FLOAT_COLOR_TO_CHAN(out[i], fo); \ + } \ +} + +#else + +#define LINTERP_RGBA(nr, t, out, a, b) { \ + int n; \ + const GLuint ti = FloatToInt(t*256.0F); \ + const GLubyte *Ib = (const GLubyte *)&a[0]; \ + const GLubyte *Jb = (const GLubyte *)&b[0]; \ + GLubyte *Ob = (GLubyte *)&out[0]; \ + \ + for (n = 0 ; n < nr ; n++) \ + Ob[n] = (GLubyte) (Ib[n] + ((ti * (Jb[n] - Ib[n]))/256)); \ +} + +#endif + + + +static interp_func interp_tab[0x80]; + + +#define IND (INTERP_RGBA) +#define NAME interp_RGBA +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_SPEC) +#define NAME interp_RGBA_SPEC +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_FOG) +#define NAME interp_RGBA_FOG +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_FOG) +#define NAME interp_RGBA_SPEC_FOG +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_TEX) +#define NAME interp_RGBA_TEX +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_TEX) +#define NAME interp_RGBA_SPEC_TEX +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_FOG|INTERP_TEX) +#define NAME interp_RGBA_FOG_TEX +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_TEX) +#define NAME interp_RGBA_SPEC_FOG_TEX +#include "t_vb_interptmp.h" + +#define IND (INTERP_INDEX) +#define NAME interp_INDEX +#include "t_vb_interptmp.h" + +#define IND (INTERP_FOG|INTERP_INDEX) +#define NAME interp_FOG_INDEX +#include "t_vb_interptmp.h" + +#define IND (INTERP_TEX|INTERP_INDEX) +#define NAME interp_TEX_INDEX +#include "t_vb_interptmp.h" + +#define IND (INTERP_FOG|INTERP_TEX|INTERP_INDEX) +#define NAME interp_FOG_TEX_INDEX +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_EDGE) +#define NAME interp_RGBA_EDGE +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_EDGE) +#define NAME interp_RGBA_SPEC_EDGE +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_FOG|INTERP_EDGE) +#define NAME interp_RGBA_FOG_EDGE +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_EDGE) +#define NAME interp_RGBA_SPEC_FOG_EDGE +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_TEX|INTERP_EDGE) +#define NAME interp_RGBA_TEX_EDGE +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_TEX|INTERP_EDGE) +#define NAME interp_RGBA_SPEC_TEX_EDGE +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_FOG|INTERP_TEX|INTERP_EDGE) +#define NAME interp_RGBA_FOG_TEX_EDGE +#include "t_vb_interptmp.h" + +#define IND (INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_TEX|INTERP_EDGE) +#define NAME interp_RGBA_SPEC_FOG_TEX_EDGE +#include "t_vb_interptmp.h" + +#define IND (INTERP_INDEX|INTERP_EDGE) +#define NAME interp_INDEX_EDGE +#include "t_vb_interptmp.h" + +#define IND (INTERP_FOG|INTERP_INDEX|INTERP_EDGE) +#define NAME interp_FOG_INDEX_EDGE +#include "t_vb_interptmp.h" + +#define IND (INTERP_TEX|INTERP_INDEX|INTERP_EDGE) +#define NAME interp_TEX_INDEX_EDGE +#include "t_vb_interptmp.h" + +#define IND (INTERP_FOG|INTERP_TEX|INTERP_INDEX|INTERP_EDGE) +#define NAME interp_FOG_TEX_INDEX_EDGE +#include "t_vb_interptmp.h" + + + +static GLuint interp_invalid( GLcontext *ctx, + GLfloat t, + GLuint in, GLuint out, + GLboolean boundary ) +{ + (void)(ctx && t && in && out && boundary); + fprintf(stderr, "Invalid interpolation function in t_vbrender.c\n"); + return in; +} + + +static void interp_init( void ) +{ + GLuint i; + + /* Use the maximal function as the default. I don't believe any of + * the non-implemented combinations are reachable, but this gives + * some safety from crashes. + */ + for (i = 0 ; i < Elements(interp_tab) ; i++) + interp_tab[i] = interp_invalid; + + interp_tab[INTERP_RGBA] = interp_RGBA; + interp_tab[INTERP_RGBA|INTERP_SPEC] = interp_RGBA_SPEC; + interp_tab[INTERP_RGBA|INTERP_FOG] = interp_RGBA_FOG; + interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_FOG] = interp_RGBA_SPEC_FOG; + interp_tab[INTERP_RGBA|INTERP_TEX] = interp_RGBA_TEX; + interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_TEX] = interp_RGBA_SPEC_TEX; + interp_tab[INTERP_RGBA|INTERP_FOG|INTERP_TEX] = interp_RGBA_FOG_TEX; + interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_TEX] = interp_RGBA_SPEC_FOG_TEX; + interp_tab[INTERP_INDEX] = interp_INDEX; + interp_tab[INTERP_FOG|INTERP_INDEX] = interp_FOG_INDEX; + interp_tab[INTERP_TEX|INTERP_INDEX] = interp_TEX_INDEX; + interp_tab[INTERP_FOG|INTERP_TEX|INTERP_INDEX] = interp_FOG_TEX_INDEX; + interp_tab[INTERP_RGBA|INTERP_EDGE] = interp_RGBA_EDGE; + interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_EDGE] = interp_RGBA_SPEC_EDGE; + interp_tab[INTERP_RGBA|INTERP_FOG|INTERP_EDGE] = interp_RGBA_FOG_EDGE; + interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_EDGE] = interp_RGBA_SPEC_FOG_EDGE; + interp_tab[INTERP_RGBA|INTERP_TEX|INTERP_EDGE] = interp_RGBA_TEX_EDGE; + interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_TEX|INTERP_EDGE] = interp_RGBA_SPEC_TEX_EDGE; + interp_tab[INTERP_RGBA|INTERP_FOG|INTERP_TEX|INTERP_EDGE] = interp_RGBA_FOG_TEX_EDGE; + interp_tab[INTERP_RGBA|INTERP_SPEC|INTERP_FOG|INTERP_TEX|INTERP_EDGE] = interp_RGBA_SPEC_FOG_TEX_EDGE; + interp_tab[INTERP_INDEX|INTERP_EDGE] = interp_INDEX_EDGE; + interp_tab[INTERP_FOG|INTERP_INDEX|INTERP_EDGE] = interp_FOG_INDEX_EDGE; + interp_tab[INTERP_TEX|INTERP_INDEX|INTERP_EDGE] = interp_TEX_INDEX_EDGE; + interp_tab[INTERP_FOG|INTERP_TEX|INTERP_INDEX|INTERP_EDGE] = interp_FOG_TEX_INDEX_EDGE; +} + + +/**********************************************************************/ +/* Clip single primitives */ +/**********************************************************************/ + + +#if 0 +#define NEGATIVE(x) ((*(int *)&x)<0) +#define DIFFERENT_SIGNS(a,b) ((a*b) < 0) +#else +#define NEGATIVE(x) (x < 0) +#define DIFFERENT_SIGNS(a,b) ((a*b) < 0) +#endif + +#define W(i) coord[i][3] +#define Z(i) coord[i][2] +#define Y(i) coord[i][1] +#define X(i) coord[i][0] +#define SIZE 4 +#define TAG(x) x##_4 +#include "t_vb_cliptmp.h" + +#define W(i) 1.0 +#define Z(i) coord[i][2] +#define Y(i) coord[i][1] +#define X(i) coord[i][0] +#define SIZE 3 +#define TAG(x) x##_3 +#include "t_vb_cliptmp.h" + +#define W(i) 1.0 +#define Z(i) 0.0 +#define Y(i) coord[i][1] +#define X(i) coord[i][0] +#define SIZE 2 +#define TAG(x) x##_2 +#include "t_vb_cliptmp.h" + +static clip_poly_func clip_poly_tab[5] = { + 0, + 0, + viewclip_polygon_2, + viewclip_polygon_3, + viewclip_polygon_4 +}; + +static clip_line_func clip_line_tab[5] = { + 0, + 0, + viewclip_line_2, + viewclip_line_3, + viewclip_line_4 +}; + + + +/**********************************************************************/ +/* Clip and render single primitives */ +/**********************************************************************/ + + + +static INLINE void draw_line(GLcontext *ctx, GLuint v1, GLuint v2 ) +{ + struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; + GLubyte c1 = VB->ClipMask[v1], c2 = VB->ClipMask[v2]; + GLubyte ormask = c1|c2; + if (!ormask) + ctx->Driver.LineFunc( ctx, v1, v2, v2 ); + else if (!(c1 & c2 & 0x3f)) + clip_line_tab[VB->ClipPtr->size]( ctx, v1, v2, ormask ); +} + +static INLINE void draw_triangle(GLcontext *ctx, + GLuint v1, GLuint v2, GLuint v3, + GLuint pv ) +{ + struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; + GLubyte c1 = VB->ClipMask[v1], c2 = VB->ClipMask[v2], c3 = VB->ClipMask[v3]; + GLubyte ormask = c1|c2|c3; + if (!ormask) + ctx->Driver.TriangleFunc( ctx, v1, v2, v3, pv ); + else if (!(c1 & c2 & c3 & 0x3f)) { + GLuint vlist[MAX_CLIPPED_VERTICES]; + ASSIGN_3V(vlist, v1, v2, v3 ); + clip_poly_tab[VB->ClipPtr->size]( ctx, 3, vlist, pv, ormask ); + } +} + + +static INLINE void draw_quad( GLcontext *ctx, + GLuint v1, GLuint v2, GLuint v3, + GLuint v4, GLuint pv ) +{ + struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; + GLubyte c1 = VB->ClipMask[v1], c2 = VB->ClipMask[v2]; + GLubyte c3 = VB->ClipMask[v3], c4 = VB->ClipMask[v4]; + GLubyte ormask = c1|c2|c3|c4; + if (!ormask) + ctx->Driver.QuadFunc( ctx, v1, v2, v3, v4, pv ); + else if (!(c1 & c2 & c3 & c4 & 0x3f)) { + GLuint vlist[MAX_CLIPPED_VERTICES]; + ASSIGN_4V(vlist, v1, v2, v3, v4 ); + clip_poly_tab[VB->ClipPtr->size]( ctx, 4, vlist, pv, ormask ); + } +} + + +/**********************************************************************/ +/* Clip and render whole begin/end objects */ +/**********************************************************************/ + +#define NEED_EDGEFLAG_SETUP (ctx->_TriangleCaps & DD_TRI_UNFILLED) +#define EDGEFLAG_GET(idx) VB->EdgeFlagPtr->data[idx] +#define EDGEFLAG_SET(idx, val) VB->EdgeFlagPtr->data[idx] = val + + +/* Vertices, no clipping. + */ +#define RENDER_POINTS( start, count ) \ + ctx->Driver.PointsFunc( ctx, start, count-1 ) + +#define RENDER_LINE( i1, i ) \ + ctx->Driver.LineFunc( ctx, i1, i, i ) + +#define RENDER_TRI( i2, i1, i, pv, parity ) \ +do { \ + if (parity) \ + ctx->Driver.TriangleFunc( ctx, i1, i2, i, pv ); \ + else \ + ctx->Driver.TriangleFunc( ctx, i2, i1, i, pv ); \ +} while (0) + +#define RENDER_QUAD( i3, i2, i1, i, pv ) \ + ctx->Driver.QuadFunc( ctx, i3, i2, i1, i, pv ); + +#define TAG(x) x##_raw + +#define LOCAL_VARS \ + struct vertex_buffer *VB = &(TNL_CONTEXT(ctx)->vb); \ + (void) VB; + +#define RESET_STIPPLE ctx->Driver.ResetLineStipple( ctx ) +#define RESET_OCCLUSION ctx->OcclusionResult = GL_TRUE; +#define PRESERVE_VB_DEFS +#include "t_vb_rendertmp.h" + + +/* Elts, no clipping. + */ +#undef ELT +#undef TAG +#undef LOCAL_VARS +#define TAG(x) x##_raw_elts +#define ELT(x) elt[x] +#define LOCAL_VARS \ + struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; \ + const GLuint * const elt = VB->Elts; \ + (void) elt; +#include "t_vb_rendertmp.h" + + + + +/* Vertices, with the possibility of clipping. + */ +#define RENDER_POINTS( start, count ) \ + ctx->Driver.PointsFunc( ctx, start, count-1 ) + +#define RENDER_LINE( i1, i ) \ + draw_line( ctx, i1, i ) + +#define RENDER_TRI( i2, i1, i, pv, parity) \ +do { \ + GLuint e2=i2, e1=i1; \ + if (parity) { GLuint t=e2; e2=e1; e1=t; } \ + draw_triangle(ctx,e2,e1,i,pv); \ +} while (0) + +#define RENDER_QUAD( i3, i2, i1, i, pv) \ + draw_quad(ctx,i3,i2,i1,i,pv) + + +#define LOCAL_VARS \ + struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; \ + (void)VB; + +#define TAG(x) x##_clipped +#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 +#undef LOCAL_VARS +#define ELT(x) elt[x] +#define LOCAL_VARS \ + struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; \ + const GLuint * const elt = VB->Elts; \ + (void) elt; +#define TAG(x) x##_clipped_elts + +#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 = (void *)RENDER_STAGE_DATA(stage)->interp; + + if (new_inputs) { + GLuint importable = new_inputs & VB->importable_data; + GLuint interested = 0; + + if (VB->ClipOrMask) + interested = ~0; + + if (ctx->_TriangleCaps & DD_TRI_UNFILLED) + interested |= VERT_EDGE; + + importable &= interested; + + if (importable) + VB->import_data( ctx, importable, VEC_NOT_WRITEABLE|VEC_BAD_STRIDE); + + if (ctx->Driver.BuildProjectedVertices) + ctx->Driver.BuildProjectedVertices( ctx, 0, VB->Count, new_inputs); + } + + /* Rendering is considered a side-effect, and must be repeated each + * time the stage is run, even if no inputs have changed. + */ + if (VB->Elts) { + tab = VB->ClipOrMask ? render_tab_clipped_elts : render_tab_raw_elts; + } else { + tab = VB->ClipOrMask ? render_tab_clipped : render_tab_raw; + } + + if (ctx->Driver.RenderStart) + ctx->Driver.RenderStart( ctx ); + + 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 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 if (ctx->Light.ShadeModel==GL_SMOOTH) + { + 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; + } + + if (ctx->RenderMode==GL_FEEDBACK) { + interp |= INTERP_TEX; + inputs |= VERT_TEX_ANY; + } + + 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 | + _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 */ +}; |