diff options
Diffstat (limited to 'src/mesa/drivers/dri/i915/intel_render.c')
| -rw-r--r-- | src/mesa/drivers/dri/i915/intel_render.c | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915/intel_render.c b/src/mesa/drivers/dri/i915/intel_render.c new file mode 100644 index 0000000000..c8b6d308d9 --- /dev/null +++ b/src/mesa/drivers/dri/i915/intel_render.c @@ -0,0 +1,244 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * 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 TUNGSTEN 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 "imports.h" +#include "mtypes.h" +#include "enums.h" + +#include "tnl/t_context.h" +#include "tnl/t_vertex.h" + +#include "intel_screen.h" +#include "intel_context.h" +#include "intel_tris.h" +#include "intel_batchbuffer.h" +#include "intel_reg.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 /* Has it, but can't use because subpixel has to + * be adjusted for points on the INTEL/I845G + */ +#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, + PRIM3D_LINELIST, + PRIM3D_LINESTRIP, + PRIM3D_LINESTRIP, + PRIM3D_TRILIST, + PRIM3D_TRISTRIP, + PRIM3D_TRIFAN, + 0, + 0, + PRIM3D_POLY +}; + +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 +}; + +static const int scale_prim[GL_POLYGON + 1] = { + 0, /* fallback case */ + 1, + 2, + 2, + 1, + 3, + 3, + 0, /* fallback case */ + 0, /* fallback case */ + 3 +}; + + +static void +intelDmaPrimitive(struct intel_context *intel, GLenum prim) +{ + if (0) + fprintf(stderr, "%s %s\n", __FUNCTION__, _mesa_lookup_enum_by_nr(prim)); + INTEL_FIREVERTICES(intel); + intel->vtbl.reduced_primitive_state(intel, reduced_prim[prim]); + intelStartInlinePrimitive(intel, hw_prim[prim], INTEL_BATCH_CLIPRECTS); +} + + +#define LOCAL_VARS struct intel_context *intel = intel_context(ctx) +#define INIT( prim ) \ +do { \ + intelDmaPrimitive( intel, prim ); \ +} while (0) + +#define FLUSH() INTEL_FIREVERTICES(intel) + +#define GET_SUBSEQUENT_VB_MAX_VERTS() \ + ((intel->batch->size - 1500) / (intel->vertex_size*4)) +#define GET_CURRENT_VB_MAX_VERTS() GET_SUBSEQUENT_VB_MAX_VERTS() + +#define ALLOC_VERTS( nr ) \ + intelExtendInlinePrimitive( intel, (nr) * intel->vertex_size ) + +#define EMIT_VERTS( ctx, j, nr, buf ) \ + _tnl_emit_vertices_to_buffer(ctx, j, (j)+(nr), buf ) + +#define TAG(x) intel_##x +#include "tnl_dd/t_dd_dmatmp.h" + + +/**********************************************************************/ +/* Render pipeline stage */ +/**********************************************************************/ + +/* Heuristic to choose between the two render paths: + */ +static GLboolean +choose_render(struct intel_context *intel, struct vertex_buffer *VB) +{ + int vertsz = intel->vertex_size; + int cost_render = 0; + int cost_fallback = 0; + int nr_prims = 0; + int nr_rprims = 0; + int nr_rverts = 0; + int rprim = intel->reduced_primitive; + int i = 0; + + for (i = 0; i < VB->PrimitiveCount; i++) { + GLuint prim = VB->Primitive[i].mode; + GLuint length = VB->Primitive[i].count; + + if (!length) + continue; + + nr_prims++; + nr_rverts += length * scale_prim[prim & PRIM_MODE_MASK]; + + if (reduced_prim[prim & PRIM_MODE_MASK] != rprim) { + nr_rprims++; + rprim = reduced_prim[prim & PRIM_MODE_MASK]; + } + } + + /* One point for each generated primitive: + */ + cost_render = nr_prims; + cost_fallback = nr_rprims; + + /* One point for every 1024 dwords (4k) of dma: + */ + cost_render += (vertsz * i) / 1024; + cost_fallback += (vertsz * nr_rverts) / 1024; + + if (0) + fprintf(stderr, "cost render: %d fallback: %d\n", + cost_render, cost_fallback); + + if (cost_render > cost_fallback) + return GL_FALSE; + + return GL_TRUE; +} + + +static GLboolean +intel_run_render(GLcontext * ctx, struct tnl_pipeline_stage *stage) +{ + struct intel_context *intel = intel_context(ctx); + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + GLuint i; + + intel->vtbl.render_prevalidate( intel ); + + /* Don't handle clipping or indexed vertices. + */ + if (intel->RenderIndex != 0 || + !intel_validate_render(ctx, VB) || !choose_render(intel, VB)) { + return GL_TRUE; + } + + tnl->clipspace.new_inputs |= VERT_BIT_POS; + + tnl->Driver.Render.Start(ctx); + + for (i = 0; i < VB->PrimitiveCount; i++) { + GLuint prim = VB->Primitive[i].mode; + GLuint start = VB->Primitive[i].start; + GLuint length = VB->Primitive[i].count; + + if (!length) + continue; + + intel_render_tab_verts[prim & PRIM_MODE_MASK] (ctx, start, + start + length, prim); + } + + tnl->Driver.Render.Finish(ctx); + + INTEL_FIREVERTICES(intel); + + return GL_FALSE; /* finished the pipe */ +} + +const struct tnl_pipeline_stage _intel_render_stage = { + "intel render", + NULL, + NULL, + NULL, + NULL, + intel_run_render /* run */ +}; |