-
-/****************************************************************************
- * 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, ALLOC_ELTS(nr) );
- FLUSH();
- currentsz = dmasz;
- }
- } else {
- fprintf(stderr, "%s - cannot draw primitive\n", __FUNCTION__);
- return;
- }
-}
-
-
-
-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, ALLOC_ELTS(nr) );
- FLUSH();
- currentsz = dmasz;
- }
- } else {
- fprintf(stderr, "%s - cannot draw primitive\n", __FUNCTION__);
- return;
- }
-}
-
-
-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;
-
- FLUSH(); /* 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, ALLOC_ELTS(nr) );
- FLUSH();
- currentsz = dmasz;
- }
- } else {
- /* TODO: Try to emit as indexed lines.
- */
- fprintf(stderr, "%s - cannot draw primitive\n", __FUNCTION__);
- return;
- }
-}
-
-
-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;
-
- FLUSH();
- ELT_INIT( GL_LINE_STRIP );
-
- if (flags & PRIM_BEGIN)
- j = start;
- else
- j = start + 1;
-
- currentsz = GET_CURRENT_VB_MAX_ELTS();
- if (currentsz < 8) {
- currentsz = dmasz;
- }
-
- /* Ensure last vertex doesn't wrap:
- */
- currentsz--;
- dmasz--;
-
- if (j + 1 < count) {
- for ( ; j + 1 < count; j += nr - 1 ) {
- nr = MIN2( currentsz, count - j );
-
- if (j + nr >= count &&
- start < count - 1 &&
- (flags & PRIM_END))
- {
- void *tmp;
- tmp = ALLOC_ELTS(nr+1);
- tmp = TAG(emit_elts)( ctx, elts+j, nr, tmp );
- tmp = TAG(emit_elts)( ctx, elts+start, 1, tmp );
- }
- else {
- TAG(emit_elts)( ctx, elts+j, nr, ALLOC_ELTS(nr) );
- currentsz = dmasz;
- }
- }
-
- }
- else if (start + 1 < count && (flags & PRIM_END)) {
- void *tmp;
- tmp = ALLOC_ELTS(2);
- tmp = TAG(emit_elts)( ctx, elts+start+1, 1, tmp );
- tmp = TAG(emit_elts)( ctx, elts+start, 1, tmp );
- }
-
- FLUSH();
- } else {
- /* TODO: Try to emit as indexed lines */
- fprintf(stderr, "%s - cannot draw primitive\n", __FUNCTION__);
- return;
- }
-}
-
-
-/* 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;
-
- FLUSH();
- 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, ALLOC_ELTS(nr) );
- FLUSH();
- 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;
-
- FLUSH();
- ELT_INIT( GL_TRIANGLE_STRIP );
-
- currentsz = GET_CURRENT_VB_MAX_ELTS();
- if (currentsz < 8) {
- 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, ALLOC_ELTS(nr) );
- FLUSH();
- currentsz = dmasz;
- }
- } else {
- /* TODO: try to emit as indexed triangles */
- fprintf(stderr, "%s - cannot draw primitive\n", __FUNCTION__);
- return;
- }
-}
-
-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;
-
- FLUSH();
- ELT_INIT( GL_TRIANGLE_FAN );
-
- currentsz = GET_CURRENT_VB_MAX_ELTS();
- if (currentsz < 8) {
- currentsz = dmasz;
- }
-
- for (j = start + 1 ; j + 1 < count; j += nr - 2 ) {
- void *tmp;
- nr = MIN2( currentsz, count - j + 1 );
- tmp = ALLOC_ELTS( nr );
- tmp = TAG(emit_elts)( ctx, elts+start, 1, tmp );
- tmp = TAG(emit_elts)( ctx, elts+j, nr - 1, tmp );
- FLUSH();
- currentsz = dmasz;
- }
- } else {
- /* TODO: try to emit as indexed triangles */
- fprintf(stderr, "%s - cannot draw primitive\n", __FUNCTION__);
- return;
- }
-}
-
-
-static void TAG(render_poly_elts)( GLcontext *ctx,
- GLuint start,
- GLuint count,
- GLuint flags )
-{
- if (HAVE_POLYGONS) {
- LOCAL_VARS;
- GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts;
- GLuint j, nr;
- int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS();
- int currentsz;
-
- FLUSH();
- ELT_INIT( GL_POLYGON );
-
- currentsz = GET_CURRENT_VB_MAX_ELTS();
- if (currentsz < 8) {
- currentsz = dmasz;
- }
-
- for (j = start + 1 ; j + 1 < count; j += nr - 2 ) {
- void *tmp;
- nr = MIN2( currentsz, count - j + 1 );
- tmp = ALLOC_ELTS( nr );
- tmp = TAG(emit_elts)( ctx, elts+start, 1, tmp );
- tmp = TAG(emit_elts)( ctx, elts+j, nr - 1, tmp );
- FLUSH();
- currentsz = dmasz;
- }
- } else if (HAVE_TRI_FANS && !(ctx->_TriangleCaps & DD_FLATSHADE)) {
- TAG(render_tri_fan_verts)( ctx, start, count, flags );
- } else {
- fprintf(stderr, "%s - cannot draw primitive\n", __FUNCTION__);
- return;
- }
-}
-
-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;
-
- FLUSH();
- 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;
- void *buf = ALLOC_ELTS( quads*6 );
- ELTS_VARS( buf );
-
- 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 );
- }
-
- FLUSH();
- }
-
- 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, ALLOC_ELTS(nr) );
- FLUSH();
- currentsz = dmasz;
- }
- }
- }
-}
-
-
-static void TAG(render_quads_elts)( GLcontext *ctx,
- GLuint start,
- GLuint count,
- GLuint flags )
-{
- if (HAVE_QUADS) {
- LOCAL_VARS;
- GLuint *elts = TNL_CONTEXT(ctx)->vb.Elts;
- int dmasz = GET_SUBSEQUENT_VB_MAX_ELTS()/4*4;
- int currentsz;
- GLuint j, nr;
-
- FLUSH();
- ELT_INIT( GL_TRIANGLES );
-
- currentsz = GET_CURRENT_VB_MAX_ELTS()/4*4;
-
- count -= (count-start)%4;
-
- if (currentsz < 8)
- currentsz = dmasz;
-
- for (j = start; j < count; j += nr) {
- nr = MIN2( currentsz, count - j );
- TAG(emit_elts)( ctx, elts+j, nr, ALLOC_ELTS(nr) );
- FLUSH();
- currentsz = dmasz;
- }
- } 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;
- void *buf = ALLOC_ELTS( quads * 6 );
- ELTS_VARS(buf);
-
- 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 );
- }
-
- FLUSH();
- }
-
- 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
-
-
-
-
-
-
-/* Prevent fallbacks later on.