2 * Intel i810 DRI driver for Mesa 3.5
4 * Copyright (C) 1999-2000 Keith Whitwell All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL KEITH WHITWELL BE LIABLE FOR
20 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
21 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 * Keith Whitwell <keith@tungstengraphics.com>
30 * Render unclipped vertex buffers by emitting vertices directly to
31 * dma buffers. Use strip/fan hardware acceleration where possible.
34 #include "main/glheader.h"
35 #include "main/context.h"
36 #include "main/macros.h"
37 #include "main/imports.h"
38 #include "main/mtypes.h"
40 #include "math/m_xform.h"
42 #include "tnl/t_context.h"
44 #include "i810screen.h"
47 #include "i810context.h"
50 #include "i810ioctl.h"
53 * Render unclipped vertex buffers by emitting vertices directly to
54 * dma buffers. Use strip/fan hardware primitives where possible.
55 * Try to simulate missing primitives with indexed vertices.
59 #define HAVE_LINE_STRIPS 1
60 #define HAVE_TRIANGLES 1
61 #define HAVE_TRI_STRIPS 1
62 #define HAVE_TRI_STRIP_1 0 /* has it, template can't use it yet */
63 #define HAVE_TRI_FANS 1
64 #define HAVE_POLYGONS 1
66 #define HAVE_QUAD_STRIPS 0
71 static GLuint hw_prim[GL_POLYGON+1] = {
84 static const GLenum reduced_prim[GL_POLYGON+1] = {
100 #define LOCAL_VARS i810ContextPtr imesa = I810_CONTEXT(ctx)
101 #define INIT( prim ) do { \
102 I810_STATECHANGE(imesa, 0); \
103 i810RasterPrimitive( ctx, reduced_prim[prim], hw_prim[prim] ); \
105 #define GET_CURRENT_VB_MAX_VERTS() \
106 (((int)imesa->vertex_high - (int)imesa->vertex_low) / (imesa->vertex_size*4))
107 #define GET_SUBSEQUENT_VB_MAX_VERTS() \
108 (I810_DMA_BUF_SZ-4) / (imesa->vertex_size * 4)
110 #define ALLOC_VERTS( nr ) \
111 i810AllocDmaLow( imesa, (nr) * imesa->vertex_size * 4)
112 #define EMIT_VERTS( ctx, j, nr, buf ) \
113 i810_emit_contiguous_verts(ctx, j, (j)+(nr), buf)
115 #define FLUSH() I810_FIREVERTICES( imesa )
118 #define TAG(x) i810_##x
119 #include "tnl_dd/t_dd_dmatmp.h"
122 /**********************************************************************/
123 /* Render pipeline stage */
124 /**********************************************************************/
127 static GLboolean i810_run_render( struct gl_context *ctx,
128 struct tnl_pipeline_stage *stage )
130 i810ContextPtr imesa = I810_CONTEXT(ctx);
131 TNLcontext *tnl = TNL_CONTEXT(ctx);
132 struct vertex_buffer *VB = &tnl->vb;
135 /* Don't handle clipping or indexed vertices.
137 if (imesa->RenderIndex != 0 ||
138 !i810_validate_render( ctx, VB )) {
142 imesa->SetupNewInputs = VERT_BIT_POS;
144 tnl->Driver.Render.Start( ctx );
146 for (i = 0 ; i < VB->PrimitiveCount ; i++)
148 GLuint prim = _tnl_translate_prim(&VB->Primitive[i]);
149 GLuint start = VB->Primitive[i].start;
150 GLuint length = VB->Primitive[i].count;
155 i810_render_tab_verts[prim & PRIM_MODE_MASK]( ctx, start, start + length,
159 tnl->Driver.Render.Finish( ctx );
161 return GL_FALSE; /* finished the pipe */
166 const struct tnl_pipeline_stage _i810_render_stage =
173 i810_run_render /* run */