2 * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
3 * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sub license,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the
13 * next paragraph) shall be included in all copies or substantial portions
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
27 * Render unclipped vertex buffers by emitting vertices directly to
28 * dma buffers. Use strip/fan hardware acceleration where possible.
31 #include "main/glheader.h"
32 #include "main/context.h"
33 #include "main/macros.h"
34 #include "main/mtypes.h"
36 #include "math/m_xform.h"
38 #include "tnl/t_context.h"
40 #include "via_context.h"
42 #include "via_ioctl.h"
45 * Render unclipped vertex buffers by emitting vertices directly to
46 * dma buffers. Use strip/fan hardware primitives where possible.
47 * Try to simulate missing primitives with indexed vertices.
51 #define HAVE_LINE_STRIPS 1
52 #define HAVE_LINE_LOOP 1
53 #define HAVE_TRIANGLES 1
54 #define HAVE_TRI_STRIPS 1
55 #define HAVE_TRI_STRIP_1 0
56 #define HAVE_TRI_FANS 1
57 #define HAVE_POLYGONS 1
59 #define HAVE_QUAD_STRIPS 0
63 #define LOCAL_VARS struct via_context *vmesa = VIA_CONTEXT(ctx)
64 #define INIT(prim) do { \
65 viaRasterPrimitive(ctx, prim, prim); \
67 #define GET_CURRENT_VB_MAX_VERTS() \
68 ((VIA_DMA_BUF_SZ - (512 + (int)vmesa->dmaLow)) / (vmesa->vertexSize * 4))
69 #define GET_SUBSEQUENT_VB_MAX_VERTS() \
70 (VIA_DMA_BUF_SZ - 512) / (vmesa->vertexSize * 4)
72 #define ALLOC_VERTS( nr ) \
73 viaExtendPrimitive( vmesa, (nr) * vmesa->vertexSize * 4)
75 #define EMIT_VERTS(ctx, j, nr, buf) \
76 _tnl_emit_vertices_to_buffer(ctx, j, (j)+(nr), buf )
78 #define FLUSH() VIA_FINISH_PRIM( vmesa )
80 #define TAG(x) via_fast##x
81 #include "tnl_dd/t_dd_dmatmp.h"
86 /**********************************************************************/
87 /* Fast Render pipeline stage */
88 /**********************************************************************/
89 static GLboolean
via_run_fastrender(struct gl_context
*ctx
,
90 struct tnl_pipeline_stage
*stage
)
92 struct via_context
*vmesa
= VIA_CONTEXT(ctx
);
93 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
94 struct vertex_buffer
*VB
= &tnl
->vb
;
98 tnl
->Driver
.Render
.Start(ctx
);
100 if (VB
->ClipOrMask
||
101 vmesa
->renderIndex
!= 0 ||
102 !via_fastvalidate_render( ctx
, VB
)) {
103 tnl
->Driver
.Render
.Finish(ctx
);
107 tnl
->clipspace
.new_inputs
|= VERT_BIT_POS
;
109 for (i
= 0; i
< VB
->PrimitiveCount
; ++i
) {
110 GLuint mode
= _tnl_translate_prim(&VB
->Primitive
[i
]);
111 GLuint start
= VB
->Primitive
[i
].start
;
112 GLuint length
= VB
->Primitive
[i
].count
;
114 via_fastrender_tab_verts
[mode
& PRIM_MODE_MASK
](ctx
, start
, start
+length
, mode
);
117 tnl
->Driver
.Render
.Finish(ctx
);
119 return GL_FALSE
; /* finished the pipe */
122 const struct tnl_pipeline_stage _via_fastrender_stage
=
129 via_run_fastrender
/* run */