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/*
* 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 "glheader.h"
#include "context.h"
#include "macros.h"
#include "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 = VB->Primitive[i].mode;
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 */
}
static void via_check_fastrender(GLcontext *ctx,
struct tnl_pipeline_stage *stage)
{
stage->inputs = TNL_CONTEXT(ctx)->render_inputs;
}
static void fastdtr(struct tnl_pipeline_stage *stage)
{
(void)stage;
}
const struct tnl_pipeline_stage _via_fastrender_stage =
{
"via fast render",
(_DD_NEW_SEPARATE_SPECULAR |
_NEW_TEXTURE|
_NEW_FOG|
_NEW_RENDERMODE), /* re-check (new inputs) */
0, /* re-run (always runs) */
GL_TRUE, /* active */
0, 0, /* inputs (set in check_render), outputs */
0, 0, /* changed_inputs, private */
fastdtr, /* destructor */
via_check_fastrender, /* check - initially set to alloc data */
via_run_fastrender /* run */
};
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