summaryrefslogtreecommitdiffstats
path: root/src/mesa/drivers/dri/unichrome/via_render.c
blob: f676cc13c815bce19679246fd6ce955394862e4f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
/*
 * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
 * Copyright 2001-2003 S3 Graphics, Inc. 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, 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
 * VIA, S3 GRAPHICS, AND/OR ITS 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.
 */


/*
 * Render unclipped vertex buffers by emitting vertices directly to
 * dma buffers.  Use strip/fan hardware acceleration where possible.
 *
 */
#include "main/glheader.h"
#include "main/context.h"
#include "main/macros.h"
#include "main/mtypes.h"

#include "tnl/t_context.h"

#include "via_context.h"
#include "via_tris.h"
#include "via_state.h"
#include "via_ioctl.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      1
#define HAVE_LINES       1
#define HAVE_LINE_STRIPS 1
#define HAVE_LINE_LOOP   1
#define HAVE_TRIANGLES   1
#define HAVE_TRI_STRIPS  1
#define HAVE_TRI_STRIP_1 0  
#define HAVE_TRI_FANS    1
#define HAVE_POLYGONS    1
#define HAVE_QUADS       0
#define HAVE_QUAD_STRIPS 0

#define HAVE_ELTS        0

#define LOCAL_VARS struct via_context *vmesa = VIA_CONTEXT(ctx)
#define INIT(prim) do {					\
   viaRasterPrimitive(ctx, prim, prim);	\
} while (0)
#define GET_CURRENT_VB_MAX_VERTS() \
    ((VIA_DMA_BUF_SZ - (512 + (int)vmesa->dmaLow)) / (vmesa->vertexSize * 4))
#define GET_SUBSEQUENT_VB_MAX_VERTS() \
    (VIA_DMA_BUF_SZ - 512) / (vmesa->vertexSize * 4)

#define ALLOC_VERTS( nr ) \
    viaExtendPrimitive( vmesa, (nr) * vmesa->vertexSize * 4)

#define EMIT_VERTS(ctx, j, nr, buf) \
    _tnl_emit_vertices_to_buffer(ctx, j, (j)+(nr), buf )  
    
#define FLUSH() VIA_FINISH_PRIM( vmesa )

#define TAG(x) via_fast##x
#include "tnl_dd/t_dd_dmatmp.h"
#undef TAG
#undef LOCAL_VARS
#undef INIT

/**********************************************************************/
/*                          Fast Render pipeline stage                */
/**********************************************************************/
static GLboolean via_run_fastrender(GLcontext *ctx,
                                    struct tnl_pipeline_stage *stage)
{
    struct via_context *vmesa = VIA_CONTEXT(ctx);
    TNLcontext *tnl = TNL_CONTEXT(ctx);
    struct vertex_buffer *VB = &tnl->vb;
    GLuint i;
    

    tnl->Driver.Render.Start(ctx);
    
    if (VB->ClipOrMask || 
	vmesa->renderIndex != 0 || 
	!via_fastvalidate_render( ctx, VB )) {
	tnl->Driver.Render.Finish(ctx);
        return GL_TRUE;
    }

    tnl->clipspace.new_inputs |= VERT_BIT_POS;

    for (i = 0; i < VB->PrimitiveCount; ++i) {
        GLuint mode = _tnl_translate_prim(&VB->Primitive[i]);
        GLuint start = VB->Primitive[i].start;
        GLuint length = VB->Primitive[i].count;
        if (length)
            via_fastrender_tab_verts[mode & PRIM_MODE_MASK](ctx, start, start+length, mode);
    }

    tnl->Driver.Render.Finish(ctx);

    return GL_FALSE;            /* finished the pipe */
}

const struct tnl_pipeline_stage _via_fastrender_stage =
{
    "via fast render",
    NULL,
    NULL,
    NULL,
    NULL,
    via_run_fastrender           /* run */
};