| /* |
| * Intel i810 DRI driver for Mesa 3.5 |
| * |
| * Copyright (C) 1999-2000 Keith Whitwell 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 KEITH WHITWELL 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. |
| * |
| * Author: |
| * Keith Whitwell <keith@tungstengraphics.com> |
| */ |
| |
| |
| /* |
| * Render unclipped vertex buffers by emitting vertices directly to |
| * dma buffers. Use strip/fan hardware acceleration where possible. |
| * |
| */ |
| #include "glheader.h" |
| #include "context.h" |
| #include "macros.h" |
| #include "imports.h" |
| #include "mtypes.h" |
| |
| #include "tnl/t_context.h" |
| |
| #include "i810screen.h" |
| #include "i810_dri.h" |
| |
| #include "i810context.h" |
| #include "i810tris.h" |
| #include "i810state.h" |
| #include "i810vb.h" |
| #include "i810ioctl.h" |
| |
| /* |
| * Render unclipped vertex buffers by emitting vertices directly to |
| * dma buffers. Use strip/fan hardware primitives where possible. |
| * Try to simulate missing primitives with indexed vertices. |
| */ |
| #define HAVE_POINTS 0 |
| #define HAVE_LINES 1 |
| #define HAVE_LINE_STRIPS 1 |
| #define HAVE_TRIANGLES 1 |
| #define HAVE_TRI_STRIPS 1 |
| #define HAVE_TRI_STRIP_1 0 /* has it, template can't use it yet */ |
| #define HAVE_TRI_FANS 1 |
| #define HAVE_POLYGONS 1 |
| #define HAVE_QUADS 0 |
| #define HAVE_QUAD_STRIPS 0 |
| |
| #define HAVE_ELTS 0 |
| |
| |
| static GLuint hw_prim[GL_POLYGON+1] = { |
| 0, |
| PR_LINES, |
| 0, |
| PR_LINESTRIP, |
| PR_TRIANGLES, |
| PR_TRISTRIP_0, |
| PR_TRIFAN, |
| 0, |
| 0, |
| PR_POLYGON |
| }; |
| |
| static const GLenum reduced_prim[GL_POLYGON+1] = { |
| GL_POINTS, |
| GL_LINES, |
| GL_LINES, |
| GL_LINES, |
| GL_TRIANGLES, |
| GL_TRIANGLES, |
| GL_TRIANGLES, |
| GL_TRIANGLES, |
| GL_TRIANGLES, |
| GL_TRIANGLES |
| }; |
| |
| |
| |
| |
| #define LOCAL_VARS i810ContextPtr imesa = I810_CONTEXT(ctx) |
| #define INIT( prim ) do { \ |
| I810_STATECHANGE(imesa, 0); \ |
| i810RasterPrimitive( ctx, reduced_prim[prim], hw_prim[prim] ); \ |
| } while (0) |
| #define GET_CURRENT_VB_MAX_VERTS() \ |
| (((int)imesa->vertex_high - (int)imesa->vertex_low) / (imesa->vertex_size*4)) |
| #define GET_SUBSEQUENT_VB_MAX_VERTS() \ |
| (I810_DMA_BUF_SZ-4) / (imesa->vertex_size * 4) |
| |
| #define ALLOC_VERTS( nr ) \ |
| i810AllocDmaLow( imesa, (nr) * imesa->vertex_size * 4) |
| #define EMIT_VERTS( ctx, j, nr, buf ) \ |
| i810_emit_contiguous_verts(ctx, j, (j)+(nr), buf) |
| |
| #define FLUSH() I810_FIREVERTICES( imesa ) |
| |
| |
| #define TAG(x) i810_##x |
| #include "tnl_dd/t_dd_dmatmp.h" |
| |
| |
| /**********************************************************************/ |
| /* Render pipeline stage */ |
| /**********************************************************************/ |
| |
| |
| static GLboolean i810_run_render( GLcontext *ctx, |
| struct tnl_pipeline_stage *stage ) |
| { |
| i810ContextPtr imesa = I810_CONTEXT(ctx); |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| struct vertex_buffer *VB = &tnl->vb; |
| GLuint i; |
| |
| /* Don't handle clipping or indexed vertices. |
| */ |
| if (imesa->RenderIndex != 0 || |
| !i810_validate_render( ctx, VB )) { |
| return GL_TRUE; |
| } |
| |
| imesa->SetupNewInputs = VERT_BIT_POS; |
| |
| tnl->Driver.Render.Start( ctx ); |
| |
| 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; |
| |
| i810_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 _i810_render_stage = |
| { |
| "i810 render", |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| i810_run_render /* run */ |
| }; |