| /* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgarender.c,v 1.4 2002/10/30 12:51:36 alanh Exp $ */ |
| /************************************************************************** |
| |
| Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and |
| VA Linux Systems Inc., Fremont, California. |
| |
| 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 |
| on the rights to use, copy, modify, merge, publish, distribute, sub |
| license, 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 (including the next |
| paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL |
| ATI, VA LINUX SYSTEMS AND/OR THEIR SUPPLIERS 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 unclipped vertex buffers by emitting vertices directly to |
| * dma buffers. Use strip/fan hardware primitives where possible. |
| * Simulate missing primitives with indexed vertices. |
| */ |
| #include "glheader.h" |
| #include "context.h" |
| #include "macros.h" |
| #include "imports.h" |
| #include "mtypes.h" |
| |
| #include "tnl/t_context.h" |
| |
| #include "mgacontext.h" |
| #include "mgatris.h" |
| #include "mgastate.h" |
| #include "mgaioctl.h" |
| #include "mgavb.h" |
| |
| #define HAVE_POINTS 0 |
| #define HAVE_LINES 0 |
| #define HAVE_LINE_STRIPS 0 |
| #define HAVE_TRIANGLES 1 |
| #define HAVE_TRI_STRIPS 1 |
| #define HAVE_TRI_STRIP_1 0 |
| #define HAVE_TRI_FANS 1 |
| #define HAVE_POLYGONS 0 |
| #define HAVE_QUADS 0 |
| #define HAVE_QUAD_STRIPS 0 |
| |
| #define HAVE_ELTS 0 /* for now */ |
| |
| static void mgaDmaPrimitive( GLcontext *ctx, GLenum prim ) |
| { |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); |
| GLuint hwprim; |
| |
| switch (prim) { |
| case GL_TRIANGLES: |
| hwprim = MGA_WA_TRIANGLES; |
| break; |
| case GL_TRIANGLE_STRIP: |
| if (mmesa->vertex_size == 8) |
| hwprim = MGA_WA_TRISTRIP_T0; |
| else |
| hwprim = MGA_WA_TRISTRIP_T0T1; |
| break; |
| case GL_TRIANGLE_FAN: |
| if (mmesa->vertex_size == 8) |
| hwprim = MGA_WA_TRIFAN_T0; |
| else |
| hwprim = MGA_WA_TRIFAN_T0T1; |
| break; |
| default: |
| return; |
| } |
| |
| mgaRasterPrimitive( ctx, GL_TRIANGLES, hwprim ); |
| } |
| |
| |
| #define LOCAL_VARS mgaContextPtr mmesa = MGA_CONTEXT(ctx) |
| #define INIT( prim ) do { \ |
| if (0) fprintf(stderr, "%s\n", __FUNCTION__); \ |
| FLUSH_BATCH(mmesa); \ |
| mgaDmaPrimitive( ctx, prim ); \ |
| } while (0) |
| #define FLUSH() FLUSH_BATCH( mmesa ) |
| #define GET_CURRENT_VB_MAX_VERTS() \ |
| 0 /* fix me */ |
| #define GET_SUBSEQUENT_VB_MAX_VERTS() \ |
| MGA_BUFFER_SIZE / (mmesa->vertex_size * 4) |
| |
| |
| #define ALLOC_VERTS( nr ) \ |
| mgaAllocDmaLow( mmesa, (nr) * mmesa->vertex_size * 4) |
| #define EMIT_VERTS( ctx, j, nr, buf ) \ |
| mga_emit_contiguous_verts(ctx, j, (j)+(nr), buf) |
| |
| |
| #define TAG(x) mga_##x |
| #include "tnl_dd/t_dd_dmatmp.h" |
| |
| |
| |
| /**********************************************************************/ |
| /* Render pipeline stage */ |
| /**********************************************************************/ |
| |
| |
| static GLboolean mga_run_render( GLcontext *ctx, |
| struct tnl_pipeline_stage *stage ) |
| { |
| mgaContextPtr mmesa = MGA_CONTEXT(ctx); |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| struct vertex_buffer *VB = &tnl->vb; |
| GLuint i; |
| |
| /* Don't handle clipping or indexed vertices or vertex manipulations. |
| */ |
| if (mmesa->RenderIndex != 0 || |
| !mga_validate_render( ctx, VB )) { |
| return GL_TRUE; |
| } |
| |
| tnl->Driver.Render.Start( ctx ); |
| mmesa->SetupNewInputs = ~0; |
| |
| 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; |
| |
| if (!length) |
| continue; |
| |
| mga_render_tab_verts[prim & PRIM_MODE_MASK]( ctx, start, start + length, |
| prim); |
| } |
| |
| tnl->Driver.Render.Finish( ctx ); |
| |
| return GL_FALSE; /* finished the pipe */ |
| } |
| |
| |
| const struct tnl_pipeline_stage _mga_render_stage = |
| { |
| "mga render", |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| mga_run_render /* run */ |
| }; |