+++ /dev/null
-/*
- * Mesa 3-D graphics library
- * Version: 6.5
- *
- * Copyright (C) 1999-2005 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.
- *
- * Authors:
- * Keith Whitwell <keith@tungstengraphics.com>
- */
-
-
-/*
- * 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.Render.*
- *
- */
-
-#include <precomp.h>
-
-/**********************************************************************/
-/* Clip single primitives */
-/**********************************************************************/
-
-
-#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"
-
-
-
-/**********************************************************************/
-/* Clip and render whole begin/end objects */
-/**********************************************************************/
-
-#define NEED_EDGEFLAG_SETUP (ctx->Polygon.FrontMode != GL_FILL || ctx->Polygon.BackMode != GL_FILL)
-#define EDGEFLAG_GET(idx) VB->EdgeFlag[idx]
-#define EDGEFLAG_SET(idx, val) VB->EdgeFlag[idx] = val
-
-
-/* This does NOT include the CLIP_USER_BIT! */
-#define CLIPMASK (CLIP_FRUSTUM_BITS | CLIP_CULL_BIT)
-
-
-/* Vertices, with the possibility of clipping.
- */
-#define RENDER_POINTS( start, count ) \
- tnl->Driver.Render.Points( ctx, start, count )
-
-#define RENDER_LINE( v1, v2 ) \
-do { \
- GLubyte c1 = mask[v1], c2 = mask[v2]; \
- GLubyte ormask = c1|c2; \
- if (!ormask) \
- LineFunc( ctx, v1, v2 ); \
- else if (!(c1 & c2 & CLIPMASK)) \
- clip_line_4( ctx, v1, v2, ormask ); \
-} while (0)
-
-#define RENDER_TRI( v1, v2, v3 ) \
-do { \
- GLubyte c1 = mask[v1], c2 = mask[v2], c3 = mask[v3]; \
- GLubyte ormask = c1|c2|c3; \
- if (!ormask) \
- TriangleFunc( ctx, v1, v2, v3 ); \
- else if (!(c1 & c2 & c3 & CLIPMASK)) \
- clip_tri_4( ctx, v1, v2, v3, 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 & CLIPMASK)) \
- clip_quad_4( ctx, v1, v2, v3, v4, ormask ); \
-} while (0)
-
-
-#define LOCAL_VARS \
- TNLcontext *tnl = TNL_CONTEXT(ctx); \
- struct vertex_buffer *VB = &tnl->vb; \
- const GLuint * const elt = VB->Elts; \
- const GLubyte *mask = VB->ClipMask; \
- const GLuint sz = VB->ClipPtr->size; \
- const tnl_line_func LineFunc = tnl->Driver.Render.Line; \
- const tnl_triangle_func TriangleFunc = tnl->Driver.Render.Triangle; \
- const tnl_quad_func QuadFunc = tnl->Driver.Render.Quad; \
- const GLboolean stipple = ctx->Line.StippleFlag; \
- (void) (LineFunc && TriangleFunc && QuadFunc); \
- (void) elt; (void) mask; (void) sz; (void) stipple;
-
-#define TAG(x) clip_##x##_verts
-#define INIT(x) tnl->Driver.Render.PrimitiveNotify( ctx, x )
-#define RESET_STIPPLE if (stipple) tnl->Driver.Render.ResetLineStipple( ctx )
-#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"
-
-/* TODO: do this for all primitives, verts and elts:
- */
-static void clip_elt_triangles( struct gl_context *ctx,
- GLuint start,
- GLuint count,
- GLuint flags )
-{
- TNLcontext *tnl = TNL_CONTEXT(ctx);
- tnl_render_func render_tris = tnl->Driver.Render.PrimTabElts[GL_TRIANGLES];
- struct vertex_buffer *VB = &tnl->vb;
- const GLuint * const elt = VB->Elts;
- GLubyte *mask = VB->ClipMask;
- GLuint last = count-2;
- GLuint j;
- (void) flags;
-
- tnl->Driver.Render.PrimitiveNotify( ctx, GL_TRIANGLES );
-
- for (j=start; j < last; j+=3 ) {
- GLubyte c1 = mask[elt[j]];
- GLubyte c2 = mask[elt[j+1]];
- GLubyte c3 = mask[elt[j+2]];
- GLubyte ormask = c1|c2|c3;
- if (ormask) {
- if (start < j)
- render_tris( ctx, start, j, 0 );
- if (!(c1&c2&c3&CLIPMASK))
- clip_tri_4( ctx, elt[j], elt[j+1], elt[j+2], ormask );
- start = j+3;
- }
- }
-
- if (start < j)
- render_tris( ctx, start, j, 0 );
-}
-
-/**********************************************************************/
-/* Render whole begin/end objects */
-/**********************************************************************/
-
-#define NEED_EDGEFLAG_SETUP (ctx->Polygon.FrontMode != GL_FILL || ctx->Polygon.BackMode != GL_FILL)
-#define EDGEFLAG_GET(idx) VB->EdgeFlag[idx]
-#define EDGEFLAG_SET(idx, val) VB->EdgeFlag[idx] = val
-
-
-/* Vertices, no clipping.
- */
-#define RENDER_POINTS( start, count ) \
- tnl->Driver.Render.Points( 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 \
- TNLcontext *tnl = TNL_CONTEXT(ctx); \
- struct vertex_buffer *VB = &tnl->vb; \
- const GLuint * const elt = VB->Elts; \
- const tnl_line_func LineFunc = tnl->Driver.Render.Line; \
- const tnl_triangle_func TriangleFunc = tnl->Driver.Render.Triangle; \
- const tnl_quad_func QuadFunc = tnl->Driver.Render.Quad; \
- const GLboolean stipple = ctx->Line.StippleFlag; \
- (void) (LineFunc && TriangleFunc && QuadFunc); \
- (void) elt; (void) stipple
-
-#define RESET_STIPPLE if (stipple) tnl->Driver.Render.ResetLineStipple( ctx )
-#define INIT(x) tnl->Driver.Render.PrimitiveNotify( 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"
-
-
-/**********************************************************************/
-/* Helper functions for drivers */
-/**********************************************************************/
-
-void _tnl_RenderClippedPolygon( struct gl_context *ctx, const GLuint *elts, GLuint n )
-{
- TNLcontext *tnl = TNL_CONTEXT(ctx);
- struct vertex_buffer *VB = &tnl->vb;
- GLuint *tmp = VB->Elts;
-
- VB->Elts = (GLuint *)elts;
- tnl->Driver.Render.PrimTabElts[GL_POLYGON]( ctx, 0, n, PRIM_BEGIN|PRIM_END );
- VB->Elts = tmp;
-}
-
-void _tnl_RenderClippedLine( struct gl_context *ctx, GLuint ii, GLuint jj )
-{
- TNLcontext *tnl = TNL_CONTEXT(ctx);
- tnl->Driver.Render.Line( ctx, ii, jj );
-}
-
-
-
-/**********************************************************************/
-/* Clip and render whole vertex buffers */
-/**********************************************************************/
-
-
-static GLboolean run_render( struct gl_context *ctx,
- struct tnl_pipeline_stage *stage )
-{
- TNLcontext *tnl = TNL_CONTEXT(ctx);
- struct vertex_buffer *VB = &tnl->vb;
- tnl_render_func *tab;
- GLint pass = 0;
-
- /* Allow the drivers to lock before projected verts are built so
- * that window coordinates are guarenteed not to change before
- * rendering.
- */
- ASSERT(tnl->Driver.Render.Start);
-
- tnl->Driver.Render.Start( ctx );
-
- ASSERT(tnl->Driver.Render.BuildVertices);
- ASSERT(tnl->Driver.Render.PrimitiveNotify);
- ASSERT(tnl->Driver.Render.Points);
- ASSERT(tnl->Driver.Render.Line);
- ASSERT(tnl->Driver.Render.Triangle);
- ASSERT(tnl->Driver.Render.Quad);
- ASSERT(tnl->Driver.Render.ResetLineStipple);
- ASSERT(tnl->Driver.Render.Interp);
- ASSERT(tnl->Driver.Render.CopyPV);
- ASSERT(tnl->Driver.Render.ClippedLine);
- ASSERT(tnl->Driver.Render.ClippedPolygon);
- ASSERT(tnl->Driver.Render.Finish);
-
- tnl->Driver.Render.BuildVertices( ctx, 0, VB->Count, ~0 );
-
- if (VB->ClipOrMask) {
- tab = VB->Elts ? clip_render_tab_elts : clip_render_tab_verts;
- clip_render_tab_elts[GL_TRIANGLES] = clip_elt_triangles;
- }
- else {
- tab = (VB->Elts ?
- tnl->Driver.Render.PrimTabElts :
- tnl->Driver.Render.PrimTabVerts);
- }
-
- do
- {
- GLuint i;
-
- for (i = 0 ; i < VB->PrimitiveCount ; i++)
- {
- GLuint prim = _tnl_translate_prim(&VB->Primitive[i]);
- GLuint start = VB->Primitive[i].start;
- GLuint length = VB->Primitive[i].count;
-
- assert((prim & PRIM_MODE_MASK) <= GL_POLYGON);
-
- if (MESA_VERBOSE & VERBOSE_PRIMS)
- _mesa_debug(NULL, "MESA prim %s %d..%d\n",
- _mesa_lookup_enum_by_nr(prim & PRIM_MODE_MASK),
- start, start+length);
-
- if (length)
- tab[prim & PRIM_MODE_MASK]( ctx, start, start + length, prim );
- }
- } while (tnl->Driver.Render.Multipass &&
- tnl->Driver.Render.Multipass( ctx, ++pass ));
-
- tnl->Driver.Render.Finish( ctx );
-
- return GL_FALSE; /* finished the pipe */
-}
-
-
-/**********************************************************************/
-/* Render pipeline stage */
-/**********************************************************************/
-
-
-
-
-
-const struct tnl_pipeline_stage _tnl_render_stage =
-{
- "render", /* name */
- NULL, /* private data */
- NULL, /* creator */
- NULL, /* destructor */
- NULL, /* validate */
- run_render /* run */
-};
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