diff options
Diffstat (limited to 'src/mesa/tnl')
| -rw-r--r-- | src/mesa/tnl/t_array_api.c | 90 |
1 files changed, 75 insertions, 15 deletions
diff --git a/src/mesa/tnl/t_array_api.c b/src/mesa/tnl/t_array_api.c index f77fac1b2f6..e2697730426 100644 --- a/src/mesa/tnl/t_array_api.c +++ b/src/mesa/tnl/t_array_api.c @@ -1,4 +1,4 @@ -/* $Id: t_array_api.c,v 1.10 2001/03/12 00:48:43 gareth Exp $ */ +/* $Id: t_array_api.c,v 1.11 2001/04/26 14:51:06 keithw Exp $ */ /* * Mesa 3-D graphics library @@ -90,8 +90,8 @@ static void fallback_drawarrays( GLcontext *ctx, GLenum mode, GLint start, } -static void _tnl_draw_elements( GLcontext *ctx, GLenum mode, GLsizei count, - const GLuint *indices) +static void fallback_drawelements( GLcontext *ctx, GLenum mode, GLsizei count, + const GLuint *indices) { #if 1 /* Optimized code that fakes the effect of calling @@ -179,7 +179,13 @@ _tnl_DrawArrays(GLenum mode, GLint start, GLsizei count) if (tnl->pipeline.build_state_changes) _tnl_validate_pipeline( ctx ); - if (!ctx->CompileFlag && count - start < (GLint) ctx->Const.MaxArrayLockSize) { + if (ctx->CompileFlag) { + fallback_drawarrays( ctx, mode, start, count ); + } + else if (count - start < (GLint) ctx->Const.MaxArrayLockSize) { + + /* Small primitives which can fit in a single vertex buffer: + */ FLUSH_CURRENT( ctx, 0 ); if (ctx->Array.LockCount) @@ -214,26 +220,80 @@ _tnl_DrawArrays(GLenum mode, GLint start, GLsizei count) tnl->pipeline.run_input_changes |= ctx->Array._Enabled; } } - else if (!ctx->CompileFlag && mode == GL_TRIANGLE_STRIP) { - int bufsz = (ctx->Const.MaxArrayLockSize - 2) & ~1; + else { + int bufsz = (ctx->Const.MaxArrayLockSize - 4) & ~3; int j, nr; + int minimum, modulo, skip; + + /* Large primitives requiring decomposition to multiple vertex + * buffers: + */ + switch (mode) { + case GL_POINTS: + minimum = 0; + modulo = 1; + skip = 0; + case GL_LINES: + minimum = 1; + modulo = 2; + skip = 1; + case GL_LINE_STRIP: + minimum = 1; + modulo = 1; + skip = 0; + break; + case GL_TRIANGLES: + minimum = 2; + modulo = 3; + skip = 2; + break; + case GL_TRIANGLE_STRIP: + minimum = 2; + modulo = 1; + skip = 0; + break; + case GL_QUADS: + minimum = 3; + modulo = 4; + skip = 3; + break; + case GL_QUAD_STRIP: + minimum = 3; + modulo = 2; + skip = 0; + break; + case GL_LINE_LOOP: + case GL_TRIANGLE_FAN: + case GL_POLYGON: + default: + /* Primitives requiring a copied vertex (fan-like primitives) + * must use the slow path: + */ + fallback_drawarrays( ctx, mode, start, count ); + return; + } FLUSH_CURRENT( ctx, 0 ); - /* TODO: other non-fan primitives. - */ - for (j = start ; j < count - 2; j += nr - 2 ) { +/* fprintf(stderr, "start %d count %d min %d modulo %d skip %d\n", */ +/* start, count, minimum, modulo, skip); */ + + for (j = start + minimum ; j < count ; j += nr + skip ) { + nr = MIN2( bufsz, count - j ); - _tnl_vb_bind_arrays( ctx, j, j + nr ); + nr -= nr % modulo; + +/* fprintf(stderr, "%d..%d\n", j - minimum, j+nr); */ + + _tnl_vb_bind_arrays( ctx, j - minimum, j + nr ); + VB->FirstPrimitive = 0; VB->Primitive[0] = mode | PRIM_BEGIN | PRIM_END | PRIM_LAST; - VB->PrimitiveLength[0] = nr; + VB->PrimitiveLength[0] = nr + minimum; tnl->pipeline.run_input_changes |= ctx->Array._Enabled; _tnl_run_pipeline( ctx ); tnl->pipeline.run_input_changes |= ctx->Array._Enabled; } - } else { - fallback_drawarrays( ctx, mode, start, count ); } } @@ -293,7 +353,7 @@ _tnl_DrawRangeElements(GLenum mode, } else { /* Range is too big to optimize: */ - _tnl_draw_elements( ctx, mode, count, ui_indices ); + fallback_drawelements( ctx, mode, count, ui_indices ); } } @@ -338,7 +398,7 @@ _tnl_DrawElements(GLenum mode, GLsizei count, GLenum type, max_elt < (GLuint) count) /* do we want to use it? */ _tnl_draw_range_elements( ctx, mode, 0, max_elt+1, count, ui_indices ); else - _tnl_draw_elements( ctx, mode, count, ui_indices ); + fallback_drawelements( ctx, mode, count, ui_indices ); } } |