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/*
* 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 "main/glheader.h"
#include "main/context.h"
#include "main/macros.h"
#include "main/imports.h"
#include "main/mtypes.h"
#include "math/m_xform.h"
#include "tnl/t_context.h"
#include "i810screen.h"
#include "i810_dri.h"
#include "i810context.h"
#include "i810tris.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 */
};
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