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/**************************************************************************
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Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and
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VA Linux Systems Inc., Fremont, California.
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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on the rights to use, copy, modify, merge, publish, distribute, sub
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license, and/or sell copies of the Software, and to permit persons to whom
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the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice (including the next
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paragraph) shall be included in all copies or substantial portions of the
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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ATI, VA LINUX SYSTEMS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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**************************************************************************/
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* Keith Whitwell <keith@tungstengraphics.com>
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* Render unclipped vertex buffers by emitting vertices directly to
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* dma buffers. Use strip/fan hardware primitives where possible.
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* Simulate missing primitives with indexed vertices.
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#include "main/glheader.h"
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#include "main/context.h"
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#include "main/macros.h"
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#include "main/imports.h"
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#include "main/mtypes.h"
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#include "math/m_xform.h"
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#include "tnl/t_context.h"
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#include "mgacontext.h"
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#define HAVE_LINE_STRIPS 0
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#define HAVE_TRIANGLES 1
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#define HAVE_TRI_STRIPS 1
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#define HAVE_TRI_STRIP_1 0
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#define HAVE_TRI_FANS 1
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#define HAVE_POLYGONS 0
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#define HAVE_QUAD_STRIPS 0
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#define HAVE_ELTS 0 /* for now */
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static void mgaDmaPrimitive( struct gl_context *ctx, GLenum prim )
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mgaContextPtr mmesa = MGA_CONTEXT(ctx);
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hwprim = MGA_WA_TRIANGLES;
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case GL_TRIANGLE_STRIP:
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if (mmesa->vertex_size == 8)
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hwprim = MGA_WA_TRISTRIP_T0;
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hwprim = MGA_WA_TRISTRIP_T0T1;
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if (mmesa->vertex_size == 8)
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hwprim = MGA_WA_TRIFAN_T0;
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hwprim = MGA_WA_TRIFAN_T0T1;
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mgaRasterPrimitive( ctx, GL_TRIANGLES, hwprim );
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#define LOCAL_VARS mgaContextPtr mmesa = MGA_CONTEXT(ctx)
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#define INIT( prim ) do { \
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if (0) fprintf(stderr, "%s\n", __FUNCTION__); \
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FLUSH_BATCH(mmesa); \
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mgaDmaPrimitive( ctx, prim ); \
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#define FLUSH() FLUSH_BATCH( mmesa )
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#define GET_CURRENT_VB_MAX_VERTS() \
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#define GET_SUBSEQUENT_VB_MAX_VERTS() \
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MGA_BUFFER_SIZE / (mmesa->vertex_size * 4)
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#define ALLOC_VERTS( nr ) \
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mgaAllocDmaLow( mmesa, (nr) * mmesa->vertex_size * 4)
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#define EMIT_VERTS( ctx, j, nr, buf ) \
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mga_emit_contiguous_verts(ctx, j, (j)+(nr), buf)
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#define TAG(x) mga_##x
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#include "tnl_dd/t_dd_dmatmp.h"
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/**********************************************************************/
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/* Render pipeline stage */
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/**********************************************************************/
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static GLboolean mga_run_render( struct gl_context *ctx,
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struct tnl_pipeline_stage *stage )
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mgaContextPtr mmesa = MGA_CONTEXT(ctx);
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TNLcontext *tnl = TNL_CONTEXT(ctx);
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struct vertex_buffer *VB = &tnl->vb;
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/* Don't handle clipping or indexed vertices or vertex manipulations.
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if (mmesa->RenderIndex != 0 ||
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!mga_validate_render( ctx, VB )) {
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tnl->Driver.Render.Start( ctx );
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mmesa->SetupNewInputs = ~0;
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for (i = 0 ; i < VB->PrimitiveCount ; i++)
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GLuint prim = _tnl_translate_prim(&VB->Primitive[i]);
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GLuint start = VB->Primitive[i].start;
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GLuint length = VB->Primitive[i].count;
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mga_render_tab_verts[prim & PRIM_MODE_MASK]( ctx, start, start + length,
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tnl->Driver.Render.Finish( ctx );
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return GL_FALSE; /* finished the pipe */
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const struct tnl_pipeline_stage _mga_render_stage =
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mga_run_render /* run */