diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/tnl_dd/t_dd_dmatmp2.h')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/tnl_dd/t_dd_dmatmp2.h | 914 |
1 files changed, 914 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/tnl_dd/t_dd_dmatmp2.h b/nx-X11/extras/Mesa/src/mesa/tnl_dd/t_dd_dmatmp2.h new file mode 100644 index 000000000..b762221b1 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/tnl_dd/t_dd_dmatmp2.h @@ -0,0 +1,914 @@ + +/* + * Mesa 3-D graphics library + * Version: 4.0.3 + * + * Copyright (C) 1999-2002 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. + * + */ + +#if !HAVE_TRIANGLES || !HAVE_POINTS || !HAVE_LINES +#error "must have points, lines & triangles to use render template" +#endif + +#if !HAVE_TRI_STRIPS || !HAVE_TRI_FANS +#error "must have tri strip and fans to use render template" +#endif + +#if !HAVE_LINE_STRIPS +#error "must have line strips to use render template" +#endif + +#if !HAVE_POLYGONS +#error "must have polygons to use render template" +#endif + +#if !HAVE_ELTS +#error "must have elts to use render template" +#endif + + +#ifndef EMIT_TWO_ELTS +#define EMIT_TWO_ELTS( dest, offset, elt0, elt1 ) \ +do { \ + (dest)[offset] = (elt0); \ + (dest)[offset+1] = (elt1); \ +} while (0) +#endif + + +/**********************************************************************/ +/* Render whole begin/end objects */ +/**********************************************************************/ + + +static ELT_TYPE *TAG(emit_elts)( GLcontext *ctx, + ELT_TYPE *dest, + GLuint *elts, GLuint nr ) +{ + GLint i; + LOCAL_VARS; + + for ( i = 0 ; i+1 < nr ; i+=2, elts += 2 ) { + EMIT_TWO_ELTS( dest, 0, elts[0], elts[1] ); + dest += 2; + } + if (i < nr) { + EMIT_ELT( dest, 0, elts[0] ); + dest += 1; + } + + return dest; +} + +static ELT_TYPE *TAG(emit_consecutive_elts)( GLcontext *ctx, + ELT_TYPE *dest, + GLuint start, GLuint nr ) +{ + GLint i; + LOCAL_VARS; + + for ( i = 0 ; i+1 < nr ; i+=2, start += 2 ) { + EMIT_TWO_ELTS( dest, 0, start, start+1 ); + dest += 2; + } + if (i < nr) { + EMIT_ELT( dest, 0, start ); + dest += 1; + } + + return dest; +} + +/*********************************************************************** + * Render non-indexed primitives. + ***********************************************************************/ + + + +static void TAG(render_points_verts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + if (start < count) { + LOCAL_VARS; + if (0) fprintf(stderr, "%s\n", __FUNCTION__); + EMIT_PRIM( ctx, GL_POINTS, HW_POINTS, start, count ); + } +} + +static void TAG(render_lines_verts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + if (0) fprintf(stderr, "%s\n", __FUNCTION__); + count -= (count-start) & 1; + + if (start+1 >= count) + return; + + if ((flags & PRIM_BEGIN) && ctx->Line.StippleFlag) { + RESET_STIPPLE(); + AUTO_STIPPLE( GL_TRUE ); + } + + EMIT_PRIM( ctx, GL_LINES, HW_LINES, start, count ); + + if ((flags & PRIM_END) && ctx->Line.StippleFlag) + AUTO_STIPPLE( GL_FALSE ); +} + + +static void TAG(render_line_strip_verts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + if (0) fprintf(stderr, "%s\n", __FUNCTION__); + + if (start+1 >= count) + return; + + if ((flags & PRIM_BEGIN) && ctx->Line.StippleFlag) + RESET_STIPPLE(); + + + if (PREFER_DISCRETE_ELT_PRIM( count-start, HW_LINES )) + { + int dmasz = GET_MAX_HW_ELTS(); + GLuint j, nr; + + ELT_INIT( GL_LINES, HW_LINES ); + + /* Emit whole number of lines in each full buffer. + */ + dmasz = dmasz/2; + + + for (j = start; j + 1 < count; j += nr - 1 ) { + ELT_TYPE *dest; + GLint i; + + nr = MIN2( dmasz, count - j ); + dest = ALLOC_ELTS( (nr-1)*2 ); + + for ( i = j ; i+1 < j+nr ; i+=1 ) { + EMIT_TWO_ELTS( dest, 0, (i+0), (i+1) ); + dest += 2; + } + + CLOSE_ELTS(); + } + } + else + EMIT_PRIM( ctx, GL_LINE_STRIP, HW_LINE_STRIP, start, count ); +} + + +static void TAG(render_line_loop_verts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + GLuint j, nr; + if (0) fprintf(stderr, "%s\n", __FUNCTION__); + + if (flags & PRIM_BEGIN) { + j = start; + if (ctx->Line.StippleFlag) + RESET_STIPPLE( ); + } + else + j = start + 1; + + if (flags & PRIM_END) { + + if (start+1 >= count) + return; + + if (PREFER_DISCRETE_ELT_PRIM( count-start, HW_LINES )) { + int dmasz = GET_MAX_HW_ELTS(); + + ELT_INIT( GL_LINES, HW_LINES ); + + /* Emit whole number of lines in each full buffer. + */ + dmasz = dmasz/2; + + /* Ensure last vertex doesn't wrap: + */ + dmasz--; + + for (; j + 1 < count; ) { + GLint i; + ELT_TYPE *dest; + + nr = MIN2( dmasz, count - j ); + dest = ALLOC_ELTS( nr*2 ); /* allocs room for 1 more line */ + + for ( i = 0 ; i < nr - 1 ; i+=1 ) { + EMIT_TWO_ELTS( dest, 0, (j+i), (j+i+1) ); + dest += 2; + } + + j += nr - 1; + + /* Emit 1 more line into space alloced above */ + if (j + 1 >= count) { + EMIT_TWO_ELTS( dest, 0, (j), (start) ); + dest += 2; + } + + CLOSE_ELTS(); + } + } + else + { + int dmasz = GET_MAX_HW_ELTS() - 1; + + ELT_INIT( GL_LINE_STRIP, HW_LINE_STRIP ); + + for ( ; j + 1 < count; ) { + nr = MIN2( dmasz, count - j ); + if (j + nr < count) { + ELT_TYPE *dest = ALLOC_ELTS( nr ); + dest = TAG(emit_consecutive_elts)( ctx, dest, j, nr ); + j += nr - 1; + CLOSE_ELTS(); + } + else if (nr) { + ELT_TYPE *dest = ALLOC_ELTS( nr + 1 ); + dest = TAG(emit_consecutive_elts)( ctx, dest, j, nr ); + dest = TAG(emit_consecutive_elts)( ctx, dest, start, 1 ); + j += nr; + CLOSE_ELTS(); + } + } + } + } else { + TAG(render_line_strip_verts)( ctx, j, count, flags ); + } +} + + +static void TAG(render_triangles_verts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + if (0) fprintf(stderr, "%s\n", __FUNCTION__); + + count -= (count-start)%3; + + if (start+2 >= count) { + return; + } + + /* need a PREFER_DISCRETE_ELT_PRIM here too.. + */ + EMIT_PRIM( ctx, GL_TRIANGLES, HW_TRIANGLES, start, count ); +} + + + +static void TAG(render_tri_strip_verts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + if (0) fprintf(stderr, "%s\n", __FUNCTION__); + + if (start + 2 >= count) + return; + + if (PREFER_DISCRETE_ELT_PRIM( count-start, HW_TRIANGLES )) + { + int dmasz = GET_MAX_HW_ELTS(); + int parity = 0; + GLuint j, nr; + + ELT_INIT( GL_TRIANGLES, HW_TRIANGLES ); + + /* Emit even number of tris in each full buffer. + */ + dmasz = dmasz/3; + dmasz -= dmasz & 1; + + for (j = start; j + 2 < count; j += nr - 2 ) { + ELT_TYPE *dest; + GLint i; + + nr = MIN2( dmasz, count - j ); + dest = ALLOC_ELTS( (nr-2)*3 ); + + for ( i = j ; i+2 < j+nr ; i++, parity^=1 ) { + EMIT_ELT( dest, 0, (i+0+parity) ); + EMIT_ELT( dest, 1, (i+1-parity) ); + EMIT_ELT( dest, 2, (i+2) ); + dest += 3; + } + + CLOSE_ELTS(); + } + } + else + EMIT_PRIM( ctx, GL_TRIANGLE_STRIP, HW_TRIANGLE_STRIP_0, start, count ); +} + +static void TAG(render_tri_fan_verts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + if (0) fprintf(stderr, "%s\n", __FUNCTION__); + + if (start+2 >= count) + return; + + if (PREFER_DISCRETE_ELT_PRIM( count-start, HW_TRIANGLES )) + { + int dmasz = GET_MAX_HW_ELTS(); + GLuint j, nr; + + ELT_INIT( GL_TRIANGLES, HW_TRIANGLES ); + + dmasz = dmasz/3; + + for (j = start + 1; j + 1 < count; j += nr - 1 ) { + ELT_TYPE *dest; + GLint i; + + nr = MIN2( dmasz, count - j ); + dest = ALLOC_ELTS( (nr-1)*3 ); + + for ( i = j ; i+1 < j+nr ; i++ ) { + EMIT_ELT( dest, 0, (start) ); + EMIT_ELT( dest, 1, (i) ); + EMIT_ELT( dest, 2, (i+1) ); + dest += 3; + } + + CLOSE_ELTS(); + } + } + else { + EMIT_PRIM( ctx, GL_TRIANGLE_FAN, HW_TRIANGLE_FAN, start, count ); + } +} + + +static void TAG(render_poly_verts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + if (0) fprintf(stderr, "%s\n", __FUNCTION__); + + if (start+2 >= count) + return; + + EMIT_PRIM( ctx, GL_POLYGON, HW_POLYGON, start, count ); +} + +static void TAG(render_quad_strip_verts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + if (0) fprintf(stderr, "%s\n", __FUNCTION__); + + count -= (count-start) & 1; + + if (start+3 >= count) + return; + + if (HAVE_QUAD_STRIPS) { + EMIT_PRIM( ctx, GL_QUAD_STRIP, HW_QUAD_STRIP, start, count ); + } + else if (ctx->_TriangleCaps & DD_FLATSHADE) { + LOCAL_VARS; + int dmasz = GET_MAX_HW_ELTS(); + GLuint j, nr; + + ELT_INIT( GL_TRIANGLES, HW_TRIANGLES ); + + /* Emit whole number of quads in total, and in each buffer. + */ + dmasz = (dmasz/6)*2; + + for (j = start; j + 3 < count; j += nr - 2 ) { + ELT_TYPE *dest; + GLint quads, i; + + nr = MIN2( dmasz, count - j ); + quads = (nr/2)-1; + dest = ALLOC_ELTS( quads*6 ); + + for ( i = j ; i < j+quads*2 ; i+=2 ) { + EMIT_TWO_ELTS( dest, 0, (i+0), (i+1) ); + EMIT_TWO_ELTS( dest, 2, (i+2), (i+1) ); + EMIT_TWO_ELTS( dest, 4, (i+3), (i+2) ); + dest += 6; + } + + CLOSE_ELTS(); + } + } + else { + EMIT_PRIM( ctx, GL_TRIANGLE_STRIP, HW_TRIANGLE_STRIP_0, start, count ); + } +} + + +static void TAG(render_quads_verts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + if (0) fprintf(stderr, "%s\n", __FUNCTION__); + count -= (count-start)%4; + + if (start+3 >= count) + return; + + if (HAVE_QUADS) { + EMIT_PRIM( ctx, GL_QUADS, HW_QUADS, start, count ); + } + else { + /* Hardware doesn't have a quad primitive type -- simulate it + * using indexed vertices and the triangle primitive: + */ + LOCAL_VARS; + int dmasz = GET_MAX_HW_ELTS(); + GLuint j, nr; + + ELT_INIT( GL_TRIANGLES, HW_TRIANGLES ); + + /* Adjust for rendering as triangles: + */ + dmasz = (dmasz/6)*4; + + for (j = start; j < count; j += nr ) { + ELT_TYPE *dest; + GLint quads, i; + + nr = MIN2( dmasz, count - j ); + quads = nr/4; + dest = ALLOC_ELTS( quads*6 ); + + for ( i = j ; i < j+quads*4 ; i+=4 ) { + EMIT_TWO_ELTS( dest, 0, (i+0), (i+1) ); + EMIT_TWO_ELTS( dest, 2, (i+3), (i+1) ); + EMIT_TWO_ELTS( dest, 4, (i+2), (i+3) ); + dest += 6; + } + + CLOSE_ELTS(); + } + } +} + +static void TAG(render_noop)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ +} + + + + +static tnl_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 * + ****************************************************************************/ + +static void TAG(render_points_elts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + int dmasz = GET_MAX_HW_ELTS(); + GLuint *elts = GET_MESA_ELTS(); + GLuint j, nr; + ELT_TYPE *dest; + + ELT_INIT( GL_POINTS, HW_POINTS ); + + for (j = start; j < count; j += nr ) { + nr = MIN2( dmasz, count - j ); + dest = ALLOC_ELTS( nr ); + dest = TAG(emit_elts)( ctx, dest, elts+j, nr ); + CLOSE_ELTS(); + } +} + + + +static void TAG(render_lines_elts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + int dmasz = GET_MAX_HW_ELTS(); + GLuint *elts = GET_MESA_ELTS(); + GLuint j, nr; + ELT_TYPE *dest; + + if (start+1 >= count) + return; + + if ((flags & PRIM_BEGIN) && ctx->Line.StippleFlag) { + RESET_STIPPLE(); + AUTO_STIPPLE( GL_TRUE ); + } + + ELT_INIT( GL_LINES, HW_LINES ); + + /* Emit whole number of lines in total and in each buffer: + */ + count -= (count-start) & 1; + dmasz -= dmasz & 1; + + for (j = start; j < count; j += nr ) { + nr = MIN2( dmasz, count - j ); + dest = ALLOC_ELTS( nr ); + dest = TAG(emit_elts)( ctx, dest, elts+j, nr ); + CLOSE_ELTS(); + } + + if ((flags & PRIM_END) && ctx->Line.StippleFlag) + AUTO_STIPPLE( GL_FALSE ); +} + + +static void TAG(render_line_strip_elts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + int dmasz = GET_MAX_HW_ELTS(); + GLuint *elts = GET_MESA_ELTS(); + GLuint j, nr; + ELT_TYPE *dest; + + if (start+1 >= count) + return; + + ELT_INIT( GL_LINE_STRIP, HW_LINE_STRIP ); + + if ((flags & PRIM_BEGIN) && ctx->Line.StippleFlag) + RESET_STIPPLE(); + + for (j = start; j + 1 < count; j += nr - 1 ) { + nr = MIN2( dmasz, count - j ); + dest = ALLOC_ELTS( nr ); + dest = TAG(emit_elts)( ctx, dest, elts+j, nr ); + CLOSE_ELTS(); + } +} + + +static void TAG(render_line_loop_elts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + int dmasz = GET_MAX_HW_ELTS(); + GLuint *elts = GET_MESA_ELTS(); + GLuint j, nr; + ELT_TYPE *dest; + + if (0) fprintf(stderr, "%s\n", __FUNCTION__); + + if (flags & PRIM_BEGIN) + j = start; + else + j = start + 1; + + + if (flags & PRIM_END) { + if (start+1 >= count) + return; + } + else { + if (j+1 >= count) + return; + } + + ELT_INIT( GL_LINE_STRIP, HW_LINE_STRIP ); + + if ((flags & PRIM_BEGIN) && ctx->Line.StippleFlag) + RESET_STIPPLE(); + + + /* Ensure last vertex doesn't wrap: + */ + dmasz--; + + for ( ; j + 1 < count; ) { + nr = MIN2( dmasz, count - j ); + dest = ALLOC_ELTS( nr+1 ); /* Reserve possible space for last elt */ + dest = TAG(emit_elts)( ctx, dest, elts+j, nr ); + j += nr - 1; + if (j + 1 >= count && (flags & PRIM_END)) { + dest = TAG(emit_elts)( ctx, dest, elts+start, 1 ); + } + CLOSE_ELTS(); + } +} + + +static void TAG(render_triangles_elts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + GLuint *elts = GET_MESA_ELTS(); + int dmasz = GET_MAX_HW_ELTS()/3*3; + GLuint j, nr; + ELT_TYPE *dest; + + if (start+2 >= count) + return; + + ELT_INIT( GL_TRIANGLES, HW_TRIANGLES ); + + + /* Emit whole number of tris in total. dmasz is already a multiple + * of 3. + */ + count -= (count-start)%3; + + for (j = start; j < count; j += nr) { + nr = MIN2( dmasz, count - j ); + dest = ALLOC_ELTS( nr ); + dest = TAG(emit_elts)( ctx, dest, elts+j, nr ); + CLOSE_ELTS(); + } +} + + + +static void TAG(render_tri_strip_elts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + GLuint j, nr; + GLuint *elts = GET_MESA_ELTS(); + int dmasz = GET_MAX_HW_ELTS(); + ELT_TYPE *dest; + + if (start+2 >= count) + return; + + ELT_INIT( GL_TRIANGLE_STRIP, HW_TRIANGLE_STRIP_0 ); + + /* Keep the same winding over multiple buffers: + */ + dmasz -= (dmasz & 1); + + for (j = start ; j + 2 < count; j += nr - 2 ) { + nr = MIN2( dmasz, count - j ); + + dest = ALLOC_ELTS( nr ); + dest = TAG(emit_elts)( ctx, dest, elts+j, nr ); + CLOSE_ELTS(); + } +} + +static void TAG(render_tri_fan_elts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + GLuint *elts = GET_MESA_ELTS(); + GLuint j, nr; + int dmasz = GET_MAX_HW_ELTS(); + ELT_TYPE *dest; + + if (start+2 >= count) + return; + + ELT_INIT( GL_TRIANGLE_FAN, HW_TRIANGLE_FAN ); + + for (j = start + 1 ; j + 1 < count; j += nr - 1 ) { + nr = MIN2( dmasz, count - j + 1 ); + dest = ALLOC_ELTS( nr ); + dest = TAG(emit_elts)( ctx, dest, elts+start, 1 ); + dest = TAG(emit_elts)( ctx, dest, elts+j, nr - 1 ); + CLOSE_ELTS(); + } +} + + +static void TAG(render_poly_elts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + LOCAL_VARS; + GLuint *elts = GET_MESA_ELTS(); + GLuint j, nr; + int dmasz = GET_MAX_HW_ELTS(); + ELT_TYPE *dest; + + if (start+2 >= count) + return; + + ELT_INIT( GL_POLYGON, HW_POLYGON ); + + for (j = start + 1 ; j + 1 < count ; j += nr - 1 ) { + nr = MIN2( dmasz, count - j + 1 ); + dest = ALLOC_ELTS( nr ); + dest = TAG(emit_elts)( ctx, dest, elts+start, 1 ); + dest = TAG(emit_elts)( ctx, dest, elts+j, nr - 1 ); + CLOSE_ELTS(); + } +} + +static void TAG(render_quad_strip_elts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + if (start+3 >= count) + return; + + if (HAVE_QUAD_STRIPS && 0) { + } + else { + LOCAL_VARS; + GLuint *elts = GET_MESA_ELTS(); + int dmasz = GET_MAX_HW_ELTS(); + GLuint j, nr; + ELT_TYPE *dest; + + /* Emit whole number of quads in total, and in each buffer. + */ + dmasz -= dmasz & 1; + count -= (count-start) & 1; + + if (ctx->_TriangleCaps & DD_FLATSHADE) { + ELT_INIT( GL_TRIANGLES, HW_TRIANGLES ); + + dmasz = dmasz/6*2; + + for (j = start; j + 3 < count; j += nr - 2 ) { + nr = MIN2( dmasz, count - j ); + + if (nr >= 4) + { + GLint quads = (nr/2)-1; + ELT_TYPE *dest = ALLOC_ELTS( quads*6 ); + GLint i; + + for ( i = j-start ; i < j-start+quads ; i++, elts += 2 ) { + EMIT_TWO_ELTS( dest, 0, elts[0], elts[1] ); + EMIT_TWO_ELTS( dest, 2, elts[2], elts[1] ); + EMIT_TWO_ELTS( dest, 4, elts[3], elts[2] ); + dest += 6; + } + + CLOSE_ELTS(); + } + } + } + else { + ELT_INIT( GL_TRIANGLE_STRIP, HW_TRIANGLE_STRIP_0 ); + + for (j = start; j + 3 < count; j += nr - 2 ) { + nr = MIN2( dmasz, count - j ); + dest = ALLOC_ELTS( nr ); + dest = TAG(emit_elts)( ctx, dest, elts+j, nr ); + CLOSE_ELTS(); + } + } + } +} + + +static void TAG(render_quads_elts)( GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags ) +{ + if (start+3 >= count) + return; + + if (HAVE_QUADS && 0) { + } else { + LOCAL_VARS; + GLuint *elts = GET_MESA_ELTS(); + int dmasz = GET_MAX_HW_ELTS(); + GLuint j, nr; + + ELT_INIT( GL_TRIANGLES, HW_TRIANGLES ); + + /* Emit whole number of quads in total, and in each buffer. + */ + dmasz -= dmasz & 3; + count -= (count-start) & 3; + + /* Adjust for rendering as triangles: + */ + dmasz = dmasz/6*4; + + for (j = start; j + 3 < count; j += nr ) { + nr = MIN2( dmasz, count - j ); + + { + GLint quads = nr/4; + ELT_TYPE *dest = ALLOC_ELTS( quads * 6 ); + GLint i; + + for ( i = j-start ; i < j-start+quads ; i++, elts += 4 ) { + EMIT_TWO_ELTS( dest, 0, elts[0], elts[1] ); + EMIT_TWO_ELTS( dest, 2, elts[3], elts[1] ); + EMIT_TWO_ELTS( dest, 4, elts[2], elts[3] ); + dest += 6; + } + + CLOSE_ELTS(); + } + } + } +} + + + +static tnl_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), +}; 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