diff options
Diffstat (limited to 'src/mesa/drivers/common/t_dd_dmatmp.h')
-rw-r--r-- | src/mesa/drivers/common/t_dd_dmatmp.h | 1093 |
1 files changed, 0 insertions, 1093 deletions
diff --git a/src/mesa/drivers/common/t_dd_dmatmp.h b/src/mesa/drivers/common/t_dd_dmatmp.h deleted file mode 100644 index 10ff1df5f0..0000000000 --- a/src/mesa/drivers/common/t_dd_dmatmp.h +++ /dev/null @@ -1,1093 +0,0 @@ - -/* - * Mesa 3-D graphics library - * Version: 3.5 - * - * Copyright (C) 1999-2001 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> - */ - - -/* Template for render stages which build and emit vertices directly - * to fixed-size dma buffers. Useful for rendering strips and other - * native primitives where clipping and per-vertex tweaks such as - * those in t_dd_tritmp.h are not required. - * - * Produces code for both inline triangles and indexed triangles. - * Where various primitive types are unaccelerated by hardware, the - * code attempts to fallback to other primitive types (quadstrips to - * tristrips, lineloops to linestrips), or to indexed vertices. - * Ultimately, a FALLBACK() macro is invoked if there is no way to - * render the primitive natively. - */ - -#if !defined(HAVE_TRIANGLES) -#error "must have at least triangles to use render template" -#endif - -#if !HAVE_ELTS -#define ELTS_VARS -#define ALLOC_ELTS( nr ) -#define EMIT_ELT( offset, elt ) -#define EMIT_TWO_ELTS( offset, elt0, elt1 ) -#define INCR_ELTS( nr ) -#define ELT_INIT(prim) -#define GET_CURRENT_VB_MAX_ELTS() 0 -#define GET_SUBSEQUENT_VB_MAX_ELTS() 0 -#define ALLOC_ELTS_NEW_PRIMITIVE(nr) -#define RELEASE_ELT_VERTS() -#define EMIT_INDEXED_VERTS( ctx, start, count ) -#endif - -#ifndef EMIT_TWO_ELTS -#define EMIT_TWO_ELTS( offset, elt0, elt1 ) \ -do { \ - EMIT_ELT( offset, elt0 ); \ - EMIT_ELT( offset+1, elt1 ); \ -} while (0) -#endif - -#ifndef FINISH -#define FINISH -#endif - -/**********************************************************************/ -/* Render whole begin/end objects */ -/**********************************************************************/ - - - -static GLboolean TAG(emit_elt_verts)( GLcontext *ctx, - GLuint start, GLuint count ) -{ - if (HAVE_ELTS) { - LOCAL_VARS; - GLuint nr = count - start; - - if ( nr >= GET_SUBSEQUENT_VB_MAX_VERTS() ) /* assumes same packing for - * indexed and regualar verts - */ - return GL_FALSE; - - NEW_PRIMITIVE(); /* finish last prim */ - EMIT_INDEXED_VERTS( ctx, start, count ); - return GL_TRUE; - } else { - return GL_FALSE; - } -} - -#if (HAVE_ELTS) -static void TAG(emit_elts)( GLcontext *ctx, GLuint *elts, GLuint nr ) -{ - GLint i; - LOCAL_VARS; - ELTS_VARS; - - ALLOC_ELTS( nr ); - - for ( i = 0 ; i < nr ; i+=2, elts += 2 ) { - EMIT_TWO_ELTS( 0, elts[0], elts[1] ); - INCR_ELTS( 2 ); - } -} -#endif - - -/*********************************************************************** - * Render non-indexed primitives. - ***********************************************************************/ - - - -static void TAG(render_points_verts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_POINTS) { - LOCAL_VARS; - int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); - int currentsz = GET_CURRENT_VB_MAX_VERTS(); - GLuint j, nr; - - INIT( GL_POINTS ); - - if (currentsz < 8) - currentsz = dmasz; - - for (j = start; j < count; j += nr ) { - nr = MIN2( currentsz, count - j ); - EMIT_VERTS( ctx, j, nr ); - currentsz = dmasz; - } - - FINISH; - - } else { - VERT_FALLBACK( ctx, start, count, flags ); - } -} - -static void TAG(render_lines_verts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_LINES) { - LOCAL_VARS; - int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); - int currentsz = GET_CURRENT_VB_MAX_VERTS(); - GLuint j, nr; - - INIT( GL_LINES ); - - /* Emit whole number of lines in total and in each buffer: - */ - count -= (count-start) & 1; - currentsz -= currentsz & 1; - dmasz -= dmasz & 1; - - if (currentsz < 8) - currentsz = dmasz; - - for (j = start; j < count; j += nr ) { - nr = MIN2( currentsz, count - j ); - EMIT_VERTS( ctx, j, nr ); - currentsz = dmasz; - } - - FINISH; - - } else { - VERT_FALLBACK( ctx, start, count, flags ); - } -} - - -static void TAG(render_line_strip_verts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_LINE_STRIPS) { - LOCAL_VARS; - int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); - int currentsz = GET_CURRENT_VB_MAX_VERTS(); - GLuint j, nr; - - NEW_PRIMITIVE(); /* always a new primitive */ - INIT( GL_LINE_STRIP ); - - if (currentsz < 8) - currentsz = dmasz; - - for (j = start; j + 1 < count; j += nr - 1 ) { - nr = MIN2( currentsz, count - j ); - EMIT_VERTS( ctx, j, nr ); - currentsz = dmasz; - } - - FINISH; - - } else { - VERT_FALLBACK( ctx, start, count, flags ); - } -} - - -static void TAG(render_line_loop_verts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_LINE_STRIPS) { - LOCAL_VARS; - int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); - int currentsz = GET_CURRENT_VB_MAX_VERTS(); - GLuint j, nr; - - NEW_PRIMITIVE(); - INIT( GL_LINE_STRIP ); - - if (flags & PRIM_BEGIN) - j = start; - else - j = start + 1; - - /* Ensure last vertex won't wrap buffers: - */ - currentsz--; - dmasz--; - - if (currentsz < 8) { - NEW_BUFFER(); - currentsz = dmasz; - } - - if (j + 1 < count) { - for ( ; j + 1 < count; j += nr - 1 ) { - nr = MIN2( currentsz, count - j ); - EMIT_VERTS( ctx, j, nr ); - currentsz = dmasz; - } - - if (start < count - 1 && (flags & PRIM_END)) - EMIT_VERTS( ctx, start, 1 ); - } - else if (start + 1 < count && (flags & PRIM_END)) { - EMIT_VERTS( ctx, start+1, 1 ); - EMIT_VERTS( ctx, start, 1 ); - } - - FINISH; - - } else { - VERT_FALLBACK( ctx, start, count, flags ); - } -} - - -static void TAG(render_triangles_verts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - LOCAL_VARS; - int dmasz = (GET_SUBSEQUENT_VB_MAX_VERTS()/3) * 3; - int currentsz = (GET_CURRENT_VB_MAX_VERTS()/3) * 3; - GLuint j, nr; - - INIT(GL_TRIANGLES); - - /* Emit whole number of tris in total. dmasz is already a multiple - * of 3. - */ - count -= (count-start)%3; - - if (currentsz < 8) - currentsz = dmasz; - - for (j = start; j < count; j += nr) { - nr = MIN2( currentsz, count - j ); - EMIT_VERTS( ctx, j, nr ); - currentsz = dmasz; - } - FINISH; -} - - - -static void TAG(render_tri_strip_verts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_TRI_STRIPS) { - LOCAL_VARS; - GLuint j, nr; - int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); - int currentsz; - - INIT(GL_TRIANGLE_STRIP); - NEW_PRIMITIVE(); - - currentsz = GET_CURRENT_VB_MAX_VERTS(); - - if (currentsz < 8) { - NEW_BUFFER(); - currentsz = dmasz; - } - - /* From here on emit even numbers of tris when wrapping over buffers: - */ - dmasz -= (dmasz & 1); - currentsz -= (currentsz & 1); - - for (j = start ; j + 2 < count; j += nr - 2 ) { - nr = MIN2( currentsz, count - j ); - EMIT_VERTS( ctx, j, nr ); - currentsz = dmasz; - } - - FINISH; - - } else { - VERT_FALLBACK( ctx, start, count, flags ); - } -} - -static void TAG(render_tri_fan_verts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_TRI_FANS) { - LOCAL_VARS; - GLuint j, nr; - int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); - int currentsz = GET_CURRENT_VB_MAX_VERTS(); - - NEW_PRIMITIVE(); - INIT(GL_TRIANGLE_FAN); - - if (currentsz < 8) { - NEW_BUFFER(); - currentsz = dmasz; - } - - for (j = start + 1 ; j + 1 < count; j += nr - 1 ) { - nr = MIN2( currentsz, count - j + 1 ); - EMIT_VERTS( ctx, start, 1 ); - EMIT_VERTS( ctx, j, nr - 1 ); - currentsz = dmasz; - } - - FINISH; - - } - else { - /* Could write code to emit these as indexed vertices (for the - * g400, for instance). - */ - VERT_FALLBACK( ctx, start, count, flags ); - } -} - - -static void TAG(render_poly_verts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_POLYGONS) { - LOCAL_VARS; - GLuint j, nr; - int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); - int currentsz = GET_CURRENT_VB_MAX_VERTS(); - - NEW_PRIMITIVE(); - INIT(GL_POLYGON); - - if (currentsz < 8) { - NEW_BUFFER(); - currentsz = dmasz; - } - - for (j = start + 1 ; j + 1 < count ; j += nr - 1 ) { - nr = MIN2( currentsz, count - j + 1 ); - EMIT_VERTS( ctx, start, 1 ); - EMIT_VERTS( ctx, j, nr - 1 ); - currentsz = dmasz; - } - - FINISH; - - } - else if (HAVE_TRI_FANS && !(ctx->_TriangleCaps & DD_FLATSHADE)) { - TAG(render_tri_fan_verts)( ctx, start, count, flags ); - } else { - VERT_FALLBACK( ctx, start, count, flags ); - } -} - -static void TAG(render_quad_strip_verts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - GLuint j, nr; - - if (HAVE_QUAD_STRIPS) { - LOCAL_VARS; - GLuint j, nr; - int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); - int currentsz; - - INIT(GL_QUAD_STRIP); - NEW_PRIMITIVE(); - - currentsz = GET_CURRENT_VB_MAX_VERTS(); - - if (currentsz < 8) { - NEW_BUFFER(); - currentsz = dmasz; - } - - dmasz -= (dmasz & 2); - currentsz -= (currentsz & 2); - - for (j = start ; j + 3 < count; j += nr - 2 ) { - nr = MIN2( currentsz, count - j ); - EMIT_VERTS( ctx, j, nr ); - currentsz = dmasz; - } - - FINISH; - - } else if (HAVE_TRI_STRIPS && (ctx->_TriangleCaps & DD_FLATSHADE)) { - if (TAG(emit_elt_verts)( ctx, start, count )) { - LOCAL_VARS; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS(); - int currentsz; - GLuint j, nr; - - /* Simulate flat-shaded quadstrips using indexed vertices: - */ - NEW_PRIMITIVE(); - ELT_INIT( GL_TRIANGLES ); - - currentsz = GET_CURRENT_VB_MAX_ELTS(); - - /* Emit whole number of quads in total, and in each buffer. - */ - dmasz -= dmasz & 1; - count -= (count-start) & 1; - currentsz -= currentsz & 1; - - if (currentsz < 12) - currentsz = dmasz; - - currentsz = currentsz/6*2; - dmasz = dmasz/6*2; - - for (j = start; j + 3 < count; j += nr - 2 ) { - nr = MIN2( currentsz, count - j ); - if (nr >= 4) { - GLint quads = (nr/2)-1; - GLint i; - ELTS_VARS; - - NEW_PRIMITIVE(); - ALLOC_ELTS_NEW_PRIMITIVE( quads*6 ); - - for ( i = j-start ; i < j-start+quads*2 ; i+=2 ) { - EMIT_TWO_ELTS( 0, (i+0), (i+1) ); - EMIT_TWO_ELTS( 2, (i+2), (i+1) ); - EMIT_TWO_ELTS( 4, (i+3), (i+2) ); - INCR_ELTS( 6 ); - } - - NEW_PRIMITIVE(); - } - currentsz = dmasz; - } - - RELEASE_ELT_VERTS(); - } - else { - /* Vertices won't fit in a single buffer or elts not available, - * VERT_FALLBACK. - */ - VERT_FALLBACK( ctx, start, count, flags ); - } - } - else if (HAVE_TRI_STRIPS) { - LOCAL_VARS; - int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); - int currentsz = GET_CURRENT_VB_MAX_VERTS(); - - /* Emit smooth-shaded quadstrips as tristrips: - */ - NEW_PRIMITIVE(); - INIT( GL_TRIANGLE_STRIP ); - - /* Emit whole number of quads in total, and in each buffer. - */ - dmasz -= dmasz & 1; - currentsz -= currentsz & 1; - count -= (count-start) & 1; - - if (currentsz < 8) { - NEW_BUFFER(); - currentsz = dmasz; - } - - for (j = start; j + 3 < count; j += nr - 2 ) { - nr = MIN2( currentsz, count - j ); - EMIT_VERTS( ctx, j, nr ); - currentsz = dmasz; - } - - FINISH; - - } else { - VERT_FALLBACK( ctx, start, count, flags ); - } -} - - -static void TAG(render_quads_verts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_QUADS) { - LOCAL_VARS; - int dmasz = (GET_SUBSEQUENT_VB_MAX_VERTS()/4) * 4; - int currentsz = (GET_CURRENT_VB_MAX_VERTS()/4) * 4; - GLuint j, nr; - - INIT(GL_QUADS); - - /* Emit whole number of quads in total. dmasz is already a multiple - * of 4. - */ - count -= (count-start)%4; - - if (currentsz < 8) - currentsz = dmasz; - - for (j = start; j < count; j += nr) { - nr = MIN2( currentsz, count - j ); - EMIT_VERTS( ctx, j, nr ); - currentsz = dmasz; - } - FINISH; - } else if (TAG(emit_elt_verts)( ctx, start, count )) { - /* Hardware doesn't have a quad primitive type -- try to - * simulate it using indexed vertices and the triangle - * primitive: - */ - LOCAL_VARS; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS(); - int currentsz; - GLuint j, nr; - - NEW_PRIMITIVE(); - ELT_INIT( GL_TRIANGLES ); - currentsz = GET_CURRENT_VB_MAX_ELTS(); - - /* Emit whole number of quads in total, and in each buffer. - */ - dmasz -= dmasz & 3; - count -= (count-start) & 3; - currentsz -= currentsz & 3; - - /* Adjust for rendering as triangles: - */ - currentsz = currentsz/6*4; - dmasz = dmasz/6*4; - - if (currentsz < 8) - currentsz = dmasz; - - for (j = start; j < count; j += nr ) { - nr = MIN2( currentsz, count - j ); - if (nr >= 4) { - GLint quads = nr/4; - GLint i; - ELTS_VARS; - - NEW_PRIMITIVE(); - ALLOC_ELTS_NEW_PRIMITIVE( quads*6 ); - - for ( i = j-start ; i < j-start+quads*4 ; i+=4 ) { - EMIT_TWO_ELTS( 0, (i+0), (i+1) ); - EMIT_TWO_ELTS( 2, (i+3), (i+1) ); - EMIT_TWO_ELTS( 4, (i+2), (i+3) ); - INCR_ELTS( 6 ); - } - - NEW_PRIMITIVE(); - } - currentsz = dmasz; - } - - RELEASE_ELT_VERTS(); - } - else { - /* Vertices won't fit in a single buffer, fallback. - */ - VERT_FALLBACK( ctx, start, count, flags ); - } -} - -static void TAG(render_noop)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ -} - - - - -static render_func TAG(render_tab_verts)[GL_POLYGON+2] = -{ - TAG(render_points_verts), - TAG(render_lines_verts), - TAG(render_line_loop_verts), - TAG(render_line_strip_verts), - TAG(render_triangles_verts), - TAG(render_tri_strip_verts), - TAG(render_tri_fan_verts), - TAG(render_quads_verts), - TAG(render_quad_strip_verts), - TAG(render_poly_verts), - TAG(render_noop), -}; - - -/**************************************************************************** - * Render elts using hardware indexed verts * - ****************************************************************************/ - -#if (HAVE_ELTS) -static void TAG(render_points_elts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_POINTS) { - LOCAL_VARS; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS(); - int currentsz; - GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts; - GLuint j, nr; - - ELT_INIT( GL_POINTS ); - - currentsz = GET_CURRENT_VB_MAX_ELTS(); - if (currentsz < 8) - currentsz = dmasz; - - for (j = start; j < count; j += nr ) { - nr = MIN2( currentsz, count - j ); - TAG(emit_elts)( ctx, elts+j, nr ); - NEW_PRIMITIVE(); - currentsz = dmasz; - } - } else { - ELT_FALLBACK( ctx, start, count, flags ); - } -} - - - -static void TAG(render_lines_elts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_LINES) { - LOCAL_VARS; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS(); - int currentsz; - GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts; - GLuint j, nr; - - ELT_INIT( GL_LINES ); - - /* Emit whole number of lines in total and in each buffer: - */ - count -= (count-start) & 1; - currentsz -= currentsz & 1; - dmasz -= dmasz & 1; - - currentsz = GET_CURRENT_VB_MAX_ELTS(); - if (currentsz < 8) - currentsz = dmasz; - - for (j = start; j < count; j += nr ) { - nr = MIN2( currentsz, count - j ); - TAG(emit_elts)( ctx, elts+j, nr ); - NEW_PRIMITIVE(); - currentsz = dmasz; - } - } else { - ELT_FALLBACK( ctx, start, count, flags ); - } -} - - -static void TAG(render_line_strip_elts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_LINE_STRIPS) { - LOCAL_VARS; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS(); - int currentsz; - GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts; - GLuint j, nr; - - NEW_PRIMITIVE(); /* always a new primitive */ - ELT_INIT( GL_LINE_STRIP ); - - currentsz = GET_CURRENT_VB_MAX_ELTS(); - if (currentsz < 8) - currentsz = dmasz; - - for (j = start; j + 1 < count; j += nr - 1 ) { - nr = MIN2( currentsz, count - j ); - TAG(emit_elts)( ctx, elts+j, nr ); - NEW_PRIMITIVE(); - currentsz = dmasz; - } - } else { - /* TODO: Try to emit as indexed lines. - */ - ELT_FALLBACK( ctx, start, count, flags ); - } -} - - -static void TAG(render_line_loop_elts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_LINE_STRIPS) { - LOCAL_VARS; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS(); - int currentsz; - GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts; - GLuint j, nr; - - NEW_PRIMITIVE(); - ELT_INIT( GL_LINE_STRIP ); - - if (flags & PRIM_BEGIN) - j = start; - else - j = start + 1; - - currentsz = GET_CURRENT_VB_MAX_ELTS(); - if (currentsz < 8) { - NEW_BUFFER(); - currentsz = dmasz; - } - - /* Ensure last vertex doesn't wrap: - */ - currentsz--; - dmasz--; - - for ( ; j + 1 < count; j += nr - 1 ) { - nr = MIN2( currentsz, count - j ); -/* NEW_PRIMITIVE(); */ - TAG(emit_elts)( ctx, elts+j, nr ); - currentsz = dmasz; - } - - if (flags & PRIM_END) - TAG(emit_elts)( ctx, elts+start, 1 ); - - NEW_PRIMITIVE(); - } else { - /* TODO: Try to emit as indexed lines */ - ELT_FALLBACK( ctx, start, count, flags ); - } -} - - -/* For verts, we still eliminate the copy from main memory to dma - * buffers. For elts, this is probably no better (worse?) than the - * standard path. - */ -static void TAG(render_triangles_elts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - LOCAL_VARS; - GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS()/3*3; - int currentsz; - GLuint j, nr; - - NEW_PRIMITIVE(); - ELT_INIT( GL_TRIANGLES ); - - currentsz = GET_CURRENT_VB_MAX_ELTS(); - - /* Emit whole number of tris in total. dmasz is already a multiple - * of 3. - */ - count -= (count-start)%3; - currentsz -= currentsz%3; - if (currentsz < 8) - currentsz = dmasz; - - for (j = start; j < count; j += nr) { - nr = MIN2( currentsz, count - j ); - TAG(emit_elts)( ctx, elts+j, nr ); - NEW_PRIMITIVE(); - currentsz = dmasz; - } -} - - - -static void TAG(render_tri_strip_elts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_TRI_STRIPS) { - LOCAL_VARS; - GLuint j, nr; - GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS(); - int currentsz; - - NEW_PRIMITIVE(); - ELT_INIT( GL_TRIANGLE_STRIP ); - - currentsz = GET_CURRENT_VB_MAX_ELTS(); - if (currentsz < 8) { - NEW_BUFFER(); - currentsz = dmasz; - } - - /* Keep the same winding over multiple buffers: - */ - dmasz -= (dmasz & 1); - currentsz -= (currentsz & 1); - - for (j = start ; j + 2 < count; j += nr - 2 ) { - nr = MIN2( currentsz, count - j ); - TAG(emit_elts)( ctx, elts+j, nr ); - NEW_PRIMITIVE(); - currentsz = dmasz; - } - } else { - /* TODO: try to emit as indexed triangles */ - ELT_FALLBACK( ctx, start, count, flags ); - } -} - -static void TAG(render_tri_fan_elts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_TRI_FANS) { - LOCAL_VARS; - GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts; - GLuint j, nr; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS(); - int currentsz; - - NEW_PRIMITIVE(); - ELT_INIT( GL_TRIANGLE_FAN ); - - currentsz = GET_CURRENT_VB_MAX_ELTS(); - if (currentsz < 8) { - NEW_BUFFER(); - currentsz = dmasz; - } - - for (j = start + 1 ; j + 1 < count; j += nr - 1 ) { - nr = MIN2( currentsz, count - j + 1 ); - TAG(emit_elts)( ctx, elts+start, 1 ); - TAG(emit_elts)( ctx, elts+j, nr - 1 ); - NEW_PRIMITIVE(); - currentsz = dmasz; - } - } else { - /* TODO: try to emit as indexed triangles */ - ELT_FALLBACK( ctx, start, count, flags ); - } -} - - -static void TAG(render_poly_elts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_POLYGONS && 0) { - } else if (HAVE_TRI_FANS && !(ctx->_TriangleCaps & DD_FLATSHADE)) { - LOCAL_VARS; - GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts; - GLuint j, nr; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS(); - int currentsz; - - NEW_PRIMITIVE(); - ELT_INIT( GL_TRIANGLE_FAN ); - - currentsz = GET_CURRENT_VB_MAX_ELTS(); - if (currentsz < 8) { - NEW_BUFFER(); - currentsz = dmasz; - } - - for (j = start + 1 ; j + 1 < count ; j += nr - 1 ) { - nr = MIN2( currentsz, count - j + 1 ); - TAG(emit_elts)( ctx, elts+start, 1 ); - TAG(emit_elts)( ctx, elts+j, nr - 1 ); - NEW_PRIMITIVE(); - currentsz = dmasz; - } - } else { - ELT_FALLBACK( ctx, start, count, flags ); - } -} - -static void TAG(render_quad_strip_elts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_QUAD_STRIPS && 0) { - } - else if (HAVE_TRI_STRIPS) { - LOCAL_VARS; - GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS(); - int currentsz; - GLuint j, nr; - - NEW_PRIMITIVE(); - currentsz = GET_CURRENT_VB_MAX_ELTS(); - - /* Emit whole number of quads in total, and in each buffer. - */ - dmasz -= dmasz & 1; - count -= (count-start) & 1; - currentsz -= currentsz & 1; - - if (currentsz < 12) - currentsz = dmasz; - - if (ctx->_TriangleCaps & DD_FLATSHADE) { - ELT_INIT( GL_TRIANGLES ); - - currentsz = currentsz/6*2; - dmasz = dmasz/6*2; - - for (j = start; j + 3 < count; j += nr - 2 ) { - nr = MIN2( currentsz, count - j ); - - if (nr >= 4) - { - GLint i; - GLint quads = (nr/2)-1; - ELTS_VARS; - - - NEW_PRIMITIVE(); - ALLOC_ELTS_NEW_PRIMITIVE( quads*6 ); - - for ( i = j-start ; i < j-start+quads ; i++, elts += 2 ) { - EMIT_TWO_ELTS( 0, elts[0], elts[1] ); - EMIT_TWO_ELTS( 2, elts[2], elts[1] ); - EMIT_TWO_ELTS( 4, elts[3], elts[2] ); - INCR_ELTS( 6 ); - } - - NEW_PRIMITIVE(); - } - - currentsz = dmasz; - } - } - else { - ELT_INIT( GL_TRIANGLE_STRIP ); - - for (j = start; j + 3 < count; j += nr - 2 ) { - nr = MIN2( currentsz, count - j ); - TAG(emit_elts)( ctx, elts+j, nr ); - NEW_PRIMITIVE(); - currentsz = dmasz; - } - } - } -} - - -static void TAG(render_quads_elts)( GLcontext *ctx, - GLuint start, - GLuint count, - GLuint flags ) -{ - if (HAVE_QUADS && 0) { - } else { - LOCAL_VARS; - GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts; - int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS(); - int currentsz; - GLuint j, nr; - - ELT_INIT( GL_TRIANGLES ); - currentsz = GET_CURRENT_VB_MAX_ELTS(); - - /* Emit whole number of quads in total, and in each buffer. - */ - dmasz -= dmasz & 3; - count -= (count-start) & 3; - currentsz -= currentsz & 3; - - /* Adjust for rendering as triangles: - */ - currentsz = currentsz/6*4; - dmasz = dmasz/6*4; - - if (currentsz < 8) - currentsz = dmasz; - - for (j = start; j + 3 < count; j += nr - 2 ) { - nr = MIN2( currentsz, count - j ); - - if (nr >= 4) - { - GLint quads = nr/4; - GLint i; - ELTS_VARS; - NEW_PRIMITIVE(); - ALLOC_ELTS_NEW_PRIMITIVE( quads * 6 ); - - for ( i = j-start ; i < j-start+quads ; i++, elts += 4 ) { - EMIT_TWO_ELTS( 0, elts[0], elts[1] ); - EMIT_TWO_ELTS( 2, elts[3], elts[1] ); - EMIT_TWO_ELTS( 4, elts[2], elts[3] ); - INCR_ELTS( 6 ); - } - } - - NEW_PRIMITIVE(); - currentsz = dmasz; - } - } -} - - - -static render_func TAG(render_tab_elts)[GL_POLYGON+2] = -{ - TAG(render_points_elts), - TAG(render_lines_elts), - TAG(render_line_loop_elts), - TAG(render_line_strip_elts), - TAG(render_triangles_elts), - TAG(render_tri_strip_elts), - TAG(render_tri_fan_elts), - TAG(render_quads_elts), - TAG(render_quad_strip_elts), - TAG(render_poly_elts), - TAG(render_noop), -}; -#endif |