diff options
Diffstat (limited to 'src/mesa/drivers/dri/mga/mgarender.c')
| -rw-r--r-- | src/mesa/drivers/dri/mga/mgarender.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/mga/mgarender.c b/src/mesa/drivers/dri/mga/mgarender.c new file mode 100644 index 0000000000..53614c223f --- /dev/null +++ b/src/mesa/drivers/dri/mga/mgarender.c @@ -0,0 +1,208 @@ +/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgarender.c,v 1.4 2002/10/30 12:51:36 alanh Exp $ */ +/************************************************************************** + +Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and + VA Linux Systems Inc., Fremont, California. + +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 +on 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 +ATI, VA LINUX SYSTEMS AND/OR THEIR 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. + +**************************************************************************/ + +/* + * Authors: + * Keith Whitwell <keith@tungstengraphics.com> + * + */ + + +/* + * Render unclipped vertex buffers by emitting vertices directly to + * dma buffers. Use strip/fan hardware primitives where possible. + * Simulate missing primitives with indexed vertices. + */ +#include "glheader.h" +#include "context.h" +#include "macros.h" +/*//#include "mem.h"*/ +#include "mtypes.h" +/*#include "mmath.h" */ + +#include "tnl/t_context.h" + +#include "mgacontext.h" +#include "mgatris.h" +#include "mgastate.h" +#include "mgaioctl.h" +#include "mgavb.h" + +#define HAVE_POINTS 0 +#define HAVE_LINES 0 +#define HAVE_LINE_STRIPS 0 +#define HAVE_TRIANGLES 1 +#define HAVE_TRI_STRIPS 1 +#define HAVE_TRI_STRIP_1 0 +#define HAVE_TRI_FANS 1 +#define HAVE_POLYGONS 0 +#define HAVE_QUADS 0 +#define HAVE_QUAD_STRIPS 0 + +#define HAVE_ELTS 0 /* for now */ + +static void mgaDmaPrimitive( GLcontext *ctx, GLenum prim ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + GLuint hwprim; + + switch (prim) { + case GL_TRIANGLES: + hwprim = MGA_WA_TRIANGLES; + break; + case GL_TRIANGLE_STRIP: + if (mmesa->vertex_size == 8) + hwprim = MGA_WA_TRISTRIP_T0; + else + hwprim = MGA_WA_TRISTRIP_T0T1; + break; + case GL_TRIANGLE_FAN: + if (mmesa->vertex_size == 8) + hwprim = MGA_WA_TRIFAN_T0; + else + hwprim = MGA_WA_TRIFAN_T0T1; + break; + default: + return; + } + + mgaRasterPrimitive( ctx, GL_TRIANGLES, hwprim ); +} + +static void VERT_FALLBACK( GLcontext *ctx, GLuint start, GLuint count, + GLuint flags ) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + tnl->Driver.Render.PrimitiveNotify( ctx, flags & PRIM_MODE_MASK ); + tnl->Driver.Render.BuildVertices( ctx, start, count, ~0 ); + tnl->Driver.Render.PrimTabVerts[flags&PRIM_MODE_MASK]( ctx, start, count, flags ); + MGA_CONTEXT(ctx)->SetupNewInputs |= VERT_BIT_CLIP; +} + +#define LOCAL_VARS mgaContextPtr mmesa = MGA_CONTEXT(ctx) +#define INIT( prim ) do { \ + if (0) fprintf(stderr, "%s\n", __FUNCTION__); \ + FLUSH_BATCH(mmesa); \ + mgaDmaPrimitive( ctx, prim ); \ +} while (0) +#define NEW_PRIMITIVE() FLUSH_BATCH( mmesa ) +#define NEW_BUFFER() FLUSH_BATCH( mmesa ) +#define GET_CURRENT_VB_MAX_VERTS() \ + 0 /* fix me */ +#define GET_SUBSEQUENT_VB_MAX_VERTS() \ + MGA_BUFFER_SIZE / (mmesa->vertex_size * 4) +#define EMIT_VERTS( ctx, j, nr ) \ + mga_emit_contiguous_verts(ctx, j, (j)+(nr)) + + +#define TAG(x) mga_##x +#include "tnl_dd/t_dd_dmatmp.h" + + + +/**********************************************************************/ +/* Render pipeline stage */ +/**********************************************************************/ + + +static GLboolean mga_run_render( GLcontext *ctx, + struct gl_pipeline_stage *stage ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + GLuint i, length, flags = 0; + + /* Don't handle clipping or indexed vertices or vertex manipulations. + */ + if (VB->ClipOrMask || mmesa->RenderIndex != 0 || VB->Elts) { + return GL_TRUE; + } + + tnl->Driver.Render.Start( ctx ); + mmesa->SetupNewInputs = ~0; + + for (i = VB->FirstPrimitive ; !(flags & PRIM_LAST) ; i += length) + { + flags = VB->Primitive[i]; + length= VB->PrimitiveLength[i]; + if (length) + mga_render_tab_verts[flags & PRIM_MODE_MASK]( ctx, i, i + length, + flags ); + } + + tnl->Driver.Render.Finish( ctx ); + + return GL_FALSE; /* finished the pipe */ +} + + +static void mga_check_render( GLcontext *ctx, struct gl_pipeline_stage *stage ) +{ + GLuint inputs = VERT_BIT_POS | VERT_BIT_CLIP | VERT_BIT_COLOR0; + + if (ctx->RenderMode == GL_RENDER) { + if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) + inputs |= VERT_BIT_COLOR1; + + if (ctx->Texture.Unit[0]._ReallyEnabled) + inputs |= VERT_BIT_TEX0; + + if (ctx->Texture.Unit[1]._ReallyEnabled) + inputs |= VERT_BIT_TEX1; + + if (ctx->Fog.Enabled) + inputs |= VERT_BIT_FOG; + } + + stage->inputs = inputs; +} + + +static void dtr( struct gl_pipeline_stage *stage ) +{ + (void)stage; +} + + +const struct gl_pipeline_stage _mga_render_stage = +{ + "mga 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 */ + dtr, /* destructor */ + mga_check_render, /* check - initially set to alloc data */ + mga_run_render /* run */ +}; |