| /************************************************************************** |
| * |
| * 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[0] ), |
| float_to_ubyte( attrib[1] ), |
| float_to_ubyte( attrib[2] ), |
| float_to_ubyte( attrib[3] )) ); |
| count += 1; |
| break; |
| case EMIT_4UB_BGRA: |
| 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)) { |
| FLUSH_BATCH(NULL); |
| |
| /* Make sure state is re-emitted after a flush: |
| */ |
| i915_emit_hardware_state( i915 ); |
| |
| if (!BEGIN_BATCH( 1 + nr * vertex_size / 4)) { |
| 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; |
| } |