diff options
Diffstat (limited to 'src/gallium/drivers/i915/i915_prim_emit.c')
| -rw-r--r-- | src/gallium/drivers/i915/i915_prim_emit.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/src/gallium/drivers/i915/i915_prim_emit.c b/src/gallium/drivers/i915/i915_prim_emit.c new file mode 100644 index 0000000000..d9a5c40ab9 --- /dev/null +++ b/src/gallium/drivers/i915/i915_prim_emit.c @@ -0,0 +1,219 @@ +/************************************************************************** + * + * Copyright 2007 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. + * + **************************************************************************/ + + +#include "draw/draw_pipe.h" +#include "util/u_math.h" +#include "util/u_memory.h" +#include "util/u_pack_color.h" + +#include "i915_context.h" +#include "i915_reg.h" +#include "i915_state.h" +#include "i915_batch.h" + + + +/** + * Primitive emit to hardware. No support for vertex buffers or any + * nice fast paths. + */ +struct setup_stage { + struct draw_stage stage; /**< This must be first (base class) */ + + struct i915_context *i915; +}; + + + +/** + * Basically a cast wrapper. + */ +static INLINE struct setup_stage *setup_stage( struct draw_stage *stage ) +{ + return (struct setup_stage *)stage; +} + + +/** + * Extract the needed fields from vertex_header and emit i915 dwords. + * Recall that the vertices are constructed by the 'draw' module and + * have a couple of slots at the beginning (1-dword header, 4-dword + * clip pos) that we ignore here. + */ +static INLINE void +emit_hw_vertex( struct i915_context *i915, + const struct vertex_header *vertex) +{ + const struct vertex_info *vinfo = &i915->current.vertex_info; + uint i; + uint count = 0; /* for debug/sanity */ + + assert(!i915->dirty); + + for (i = 0; i < vinfo->num_attribs; i++) { + const uint j = vinfo->attrib[i].src_index; + const float *attrib = vertex->data[j]; + switch (vinfo->attrib[i].emit) { + case EMIT_1F: + OUT_BATCH( fui(attrib[0]) ); + count++; + break; + case EMIT_2F: + OUT_BATCH( fui(attrib[0]) ); + OUT_BATCH( fui(attrib[1]) ); + count += 2; + break; + case EMIT_3F: + OUT_BATCH( fui(attrib[0]) ); + OUT_BATCH( fui(attrib[1]) ); + OUT_BATCH( fui(attrib[2]) ); + count += 3; + break; + case EMIT_4F: + OUT_BATCH( fui(attrib[0]) ); + OUT_BATCH( fui(attrib[1]) ); + OUT_BATCH( fui(attrib[2]) ); + OUT_BATCH( fui(attrib[3]) ); + count += 4; + break; + case EMIT_4UB: + OUT_BATCH( pack_ub4(float_to_ubyte( attrib[2] ), + float_to_ubyte( attrib[1] ), + float_to_ubyte( attrib[0] ), + float_to_ubyte( attrib[3] )) ); + count += 1; + break; + default: + assert(0); + } + } + assert(count == vinfo->size); +} + + + +static INLINE void +emit_prim( struct draw_stage *stage, + struct prim_header *prim, + unsigned hwprim, + unsigned nr ) +{ + struct i915_context *i915 = setup_stage(stage)->i915; + unsigned vertex_size; + unsigned i; + + if (i915->dirty) + i915_update_derived( i915 ); + + if (i915->hardware_dirty) + i915_emit_hardware_state( i915 ); + + /* need to do this after validation! */ + vertex_size = i915->current.vertex_info.size * 4; /* in bytes */ + assert(vertex_size >= 12); /* never smaller than 12 bytes */ + + if (!BEGIN_BATCH( 1 + nr * vertex_size / 4, 0 )) { + FLUSH_BATCH(NULL); + + /* Make sure state is re-emitted after a flush: + */ + i915_update_derived( i915 ); + i915_emit_hardware_state( i915 ); + + if (!BEGIN_BATCH( 1 + nr * vertex_size / 4, 0 )) { + assert(0); + return; + } + } + + /* Emit each triangle as a single primitive. I told you this was + * simple. + */ + OUT_BATCH(_3DPRIMITIVE | + hwprim | + ((4 + vertex_size * nr)/4 - 2)); + + for (i = 0; i < nr; i++) + emit_hw_vertex(i915, prim->v[i]); +} + + +static void +setup_tri( struct draw_stage *stage, struct prim_header *prim ) +{ + emit_prim( stage, prim, PRIM3D_TRILIST, 3 ); +} + + +static void +setup_line(struct draw_stage *stage, struct prim_header *prim) +{ + emit_prim( stage, prim, PRIM3D_LINELIST, 2 ); +} + + +static void +setup_point(struct draw_stage *stage, struct prim_header *prim) +{ + emit_prim( stage, prim, PRIM3D_POINTLIST, 1 ); +} + + +static void setup_flush( struct draw_stage *stage, unsigned flags ) +{ +} + +static void reset_stipple_counter( struct draw_stage *stage ) +{ +} + +static void render_destroy( struct draw_stage *stage ) +{ + FREE( stage ); +} + + +/** + * Create a new primitive setup/render stage. This gets plugged into + * the 'draw' module's pipeline. + */ +struct draw_stage *i915_draw_render_stage( struct i915_context *i915 ) +{ + struct setup_stage *setup = CALLOC_STRUCT(setup_stage); + + setup->i915 = i915; + setup->stage.draw = i915->draw; + setup->stage.point = setup_point; + setup->stage.line = setup_line; + setup->stage.tri = setup_tri; + setup->stage.flush = setup_flush; + setup->stage.reset_stipple_counter = reset_stipple_counter; + setup->stage.destroy = render_destroy; + + return &setup->stage; +} |