diff options
Diffstat (limited to 'src/mesa/drivers/dri/i810/i810render.c')
| -rw-r--r-- | src/mesa/drivers/dri/i810/i810render.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i810/i810render.c b/src/mesa/drivers/dri/i810/i810render.c new file mode 100644 index 0000000000..8d388d88b3 --- /dev/null +++ b/src/mesa/drivers/dri/i810/i810render.c @@ -0,0 +1,214 @@ +/* + * 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 "glheader.h" +#include "context.h" +#include "macros.h" +#include "imports.h" +#include "mtypes.h" + +#include "tnl/t_context.h" + +#include "i810screen.h" +#include "i810_dri.h" + +#include "i810context.h" +#include "i810tris.h" +#include "i810state.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 +}; + +/* Fallback to normal rendering. + */ +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 ); + I810_CONTEXT(ctx)->SetupNewInputs = VERT_BIT_CLIP; +} + + + +#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 NEW_PRIMITIVE() I810_STATECHANGE( imesa, 0 ) +#define NEW_BUFFER() I810_FIREVERTICES( imesa ) +#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 EMIT_VERTS( ctx, j, nr ) \ + i810_emit_contiguous_verts(ctx, j, (j)+(nr)) + + +#define TAG(x) i810_##x +#include "tnl_dd/t_dd_dmatmp.h" + + +/**********************************************************************/ +/* Render pipeline stage */ +/**********************************************************************/ + + +static GLboolean i810_run_render( GLcontext *ctx, + struct gl_pipeline_stage *stage ) +{ + i810ContextPtr imesa = I810_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. + */ + if (VB->ClipOrMask || imesa->RenderIndex != 0 || VB->Elts) { + return GL_TRUE; + } + + imesa->SetupNewInputs = VERT_BIT_CLIP; + + tnl->Driver.Render.Start( ctx ); + + for (i = VB->FirstPrimitive ; !(flags & PRIM_LAST) ; i += length) + { + flags = VB->Primitive[i]; + length= VB->PrimitiveLength[i]; + if (length) + i810_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 i810_check_render( GLcontext *ctx, struct gl_pipeline_stage *stage ) +{ + GLuint inputs = 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 _i810_render_stage = +{ + "i810 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 */ + i810_check_render, /* check - initially set to alloc data */ + i810_run_render /* run */ +}; |