1 files changed, 330 insertions, 0 deletions

diff --git a/src/gallium/drivers/softpipe/sp_context.c b/src/gallium/drivers/softpipe/sp_context.c
new file mode 100644
index 0000000000..c699c433e9
--- /dev/null
+++ b/src/gallium/drivers/softpipe/sp_context.c
@@ -0,0 +1,330 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * Copyright 2008 VMware, Inc.  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.
+ * 
+ **************************************************************************/
+
+/* Author:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "draw/draw_context.h"
+#include "pipe/p_defines.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "sp_clear.h"
+#include "sp_context.h"
+#include "sp_flush.h"
+#include "sp_prim_setup.h"
+#include "sp_prim_vbuf.h"
+#include "sp_state.h"
+#include "sp_surface.h"
+#include "sp_tile_cache.h"
+#include "sp_texture.h"
+#include "sp_winsys.h"
+#include "sp_query.h"
+
+
+
+/**
+ * Map any drawing surfaces which aren't already mapped
+ */
+void
+softpipe_map_transfers(struct softpipe_context *sp)
+{
+   unsigned i;
+
+   for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
+      sp_tile_cache_map_transfers(sp->cbuf_cache[i]);
+   }
+
+   sp_tile_cache_map_transfers(sp->zsbuf_cache);
+}
+
+
+/**
+ * Unmap any mapped drawing surfaces
+ */
+void
+softpipe_unmap_transfers(struct softpipe_context *sp)
+{
+   uint i;
+
+   for (i = 0; i < sp->framebuffer.nr_cbufs; i++)
+      sp_flush_tile_cache(sp, sp->cbuf_cache[i]);
+   sp_flush_tile_cache(sp, sp->zsbuf_cache);
+
+   for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
+      sp_tile_cache_unmap_transfers(sp->cbuf_cache[i]);
+   }
+   sp_tile_cache_unmap_transfers(sp->zsbuf_cache);
+}
+
+
+static void
+softpipe_destroy( struct pipe_context *pipe )
+{
+   struct softpipe_context *softpipe = softpipe_context( pipe );
+   uint i;
+
+   if (softpipe->draw)
+      draw_destroy( softpipe->draw );
+
+   for (i = 0; i < SP_NUM_QUAD_THREADS; i++) {
+      softpipe->quad[i].polygon_stipple->destroy( softpipe->quad[i].polygon_stipple );
+      softpipe->quad[i].earlyz->destroy( softpipe->quad[i].earlyz );
+      softpipe->quad[i].shade->destroy( softpipe->quad[i].shade );
+      softpipe->quad[i].alpha_test->destroy( softpipe->quad[i].alpha_test );
+      softpipe->quad[i].depth_test->destroy( softpipe->quad[i].depth_test );
+      softpipe->quad[i].stencil_test->destroy( softpipe->quad[i].stencil_test );
+      softpipe->quad[i].occlusion->destroy( softpipe->quad[i].occlusion );
+      softpipe->quad[i].coverage->destroy( softpipe->quad[i].coverage );
+      softpipe->quad[i].blend->destroy( softpipe->quad[i].blend );
+      softpipe->quad[i].colormask->destroy( softpipe->quad[i].colormask );
+      softpipe->quad[i].output->destroy( softpipe->quad[i].output );
+   }
+
+   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
+      sp_destroy_tile_cache(softpipe->cbuf_cache[i]);
+   sp_destroy_tile_cache(softpipe->zsbuf_cache);
+
+   for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
+      sp_destroy_tile_cache(softpipe->tex_cache[i]);
+
+   for (i = 0; i < Elements(softpipe->constants); i++) {
+      if (softpipe->constants[i].buffer) {
+         pipe_buffer_reference(&softpipe->constants[i].buffer, NULL);
+      }
+   }
+
+   FREE( softpipe );
+}
+
+
+/**
+ * if (the texture is being used as a framebuffer surface)
+ *    return PIPE_REFERENCED_FOR_WRITE
+ * else if (the texture is a bound texture source)
+ *    return PIPE_REFERENCED_FOR_READ  XXX not done yet
+ * else
+ *    return PIPE_UNREFERENCED
+ */
+static unsigned int
+softpipe_is_texture_referenced( struct pipe_context *pipe,
+				struct pipe_texture *texture,
+				unsigned face, unsigned level)
+{
+   struct softpipe_context *softpipe = softpipe_context( pipe );
+   unsigned i;
+
+   if (softpipe->dirty_render_cache) {
+      for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
+         if (softpipe->framebuffer.cbufs[i] && 
+             softpipe->framebuffer.cbufs[i]->texture == texture) {
+            return PIPE_REFERENCED_FOR_WRITE;
+         }
+      }
+      if (softpipe->framebuffer.zsbuf && 
+          softpipe->framebuffer.zsbuf->texture == texture) {
+         return PIPE_REFERENCED_FOR_WRITE;
+      }
+   }
+   
+   /* FIXME: we also need to do the same for the texture cache */
+   
+   return PIPE_UNREFERENCED;
+}
+
+
+static unsigned int
+softpipe_is_buffer_referenced( struct pipe_context *pipe,
+			       struct pipe_buffer *buf)
+{
+   return PIPE_UNREFERENCED;
+}
+
+
+struct pipe_context *
+softpipe_create( struct pipe_screen *screen )
+{
+   struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
+   uint i;
+
+   util_init_math();
+
+#ifdef PIPE_ARCH_X86
+   softpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
+#else
+   softpipe->use_sse = FALSE;
+#endif
+
+   softpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
+
+   softpipe->pipe.winsys = screen->winsys;
+   softpipe->pipe.screen = screen;
+   softpipe->pipe.destroy = softpipe_destroy;
+
+   /* state setters */
+   softpipe->pipe.create_blend_state = softpipe_create_blend_state;
+   softpipe->pipe.bind_blend_state   = softpipe_bind_blend_state;
+   softpipe->pipe.delete_blend_state = softpipe_delete_blend_state;
+
+   softpipe->pipe.create_sampler_state = softpipe_create_sampler_state;
+   softpipe->pipe.bind_sampler_states  = softpipe_bind_sampler_states;
+   softpipe->pipe.delete_sampler_state = softpipe_delete_sampler_state;
+
+   softpipe->pipe.create_depth_stencil_alpha_state = softpipe_create_depth_stencil_state;
+   softpipe->pipe.bind_depth_stencil_alpha_state   = softpipe_bind_depth_stencil_state;
+   softpipe->pipe.delete_depth_stencil_alpha_state = softpipe_delete_depth_stencil_state;
+
+   softpipe->pipe.create_rasterizer_state = softpipe_create_rasterizer_state;
+   softpipe->pipe.bind_rasterizer_state   = softpipe_bind_rasterizer_state;
+   softpipe->pipe.delete_rasterizer_state = softpipe_delete_rasterizer_state;
+
+   softpipe->pipe.create_fs_state = softpipe_create_fs_state;
+   softpipe->pipe.bind_fs_state   = softpipe_bind_fs_state;
+   softpipe->pipe.delete_fs_state = softpipe_delete_fs_state;
+
+   softpipe->pipe.create_vs_state = softpipe_create_vs_state;
+   softpipe->pipe.bind_vs_state   = softpipe_bind_vs_state;
+   softpipe->pipe.delete_vs_state = softpipe_delete_vs_state;
+
+   softpipe->pipe.set_blend_color = softpipe_set_blend_color;
+   softpipe->pipe.set_clip_state = softpipe_set_clip_state;
+   softpipe->pipe.set_constant_buffer = softpipe_set_constant_buffer;
+   softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
+   softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
+   softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
+   softpipe->pipe.set_sampler_textures = softpipe_set_sampler_textures;
+   softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
+
+   softpipe->pipe.set_vertex_buffers = softpipe_set_vertex_buffers;
+   softpipe->pipe.set_vertex_elements = softpipe_set_vertex_elements;
+
+   softpipe->pipe.draw_arrays = softpipe_draw_arrays;
+   softpipe->pipe.draw_elements = softpipe_draw_elements;
+   softpipe->pipe.draw_range_elements = softpipe_draw_range_elements;
+   softpipe->pipe.set_edgeflags = softpipe_set_edgeflags;
+
+
+   softpipe->pipe.clear = softpipe_clear;
+   softpipe->pipe.flush = softpipe_flush;
+
+   softpipe->pipe.is_texture_referenced = softpipe_is_texture_referenced;
+   softpipe->pipe.is_buffer_referenced = softpipe_is_buffer_referenced;
+
+   softpipe_init_query_funcs( softpipe );
+
+   /*
+    * Alloc caches for accessing drawing surfaces and textures.
+    * Must be before quad stage setup!
+    */
+   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
+      softpipe->cbuf_cache[i] = sp_create_tile_cache( screen );
+   softpipe->zsbuf_cache = sp_create_tile_cache( screen );
+
+   for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
+      softpipe->tex_cache[i] = sp_create_tile_cache( screen );
+
+
+   /* setup quad rendering stages */
+   for (i = 0; i < SP_NUM_QUAD_THREADS; i++) {
+      softpipe->quad[i].polygon_stipple = sp_quad_polygon_stipple_stage(softpipe);
+      softpipe->quad[i].earlyz = sp_quad_earlyz_stage(softpipe);
+      softpipe->quad[i].shade = sp_quad_shade_stage(softpipe);
+      softpipe->quad[i].alpha_test = sp_quad_alpha_test_stage(softpipe);
+      softpipe->quad[i].depth_test = sp_quad_depth_test_stage(softpipe);
+      softpipe->quad[i].stencil_test = sp_quad_stencil_test_stage(softpipe);
+      softpipe->quad[i].occlusion = sp_quad_occlusion_stage(softpipe);
+      softpipe->quad[i].coverage = sp_quad_coverage_stage(softpipe);
+      softpipe->quad[i].blend = sp_quad_blend_stage(softpipe);
+      softpipe->quad[i].colormask = sp_quad_colormask_stage(softpipe);
+      softpipe->quad[i].output = sp_quad_output_stage(softpipe);
+   }
+
+   /* vertex shader samplers */
+   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
+      softpipe->tgsi.vert_samplers[i].base.get_samples = sp_get_samples_vertex;
+      softpipe->tgsi.vert_samplers[i].unit = i;
+      softpipe->tgsi.vert_samplers[i].sp = softpipe;
+      softpipe->tgsi.vert_samplers[i].cache = softpipe->tex_cache[i];
+      softpipe->tgsi.vert_samplers_list[i] = &softpipe->tgsi.vert_samplers[i];
+   }
+
+   /* fragment shader samplers */
+   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
+      softpipe->tgsi.frag_samplers[i].base.get_samples = sp_get_samples_fragment;
+      softpipe->tgsi.frag_samplers[i].unit = i;
+      softpipe->tgsi.frag_samplers[i].sp = softpipe;
+      softpipe->tgsi.frag_samplers[i].cache = softpipe->tex_cache[i];
+      softpipe->tgsi.frag_samplers_list[i] = &softpipe->tgsi.frag_samplers[i];
+   }
+
+   /*
+    * Create drawing context and plug our rendering stage into it.
+    */
+   softpipe->draw = draw_create();
+   if (!softpipe->draw) 
+      goto fail;
+
+   draw_texture_samplers(softpipe->draw,
+                         PIPE_MAX_SAMPLERS,
+                         (struct tgsi_sampler **)
+                            softpipe->tgsi.vert_samplers_list);
+
+   softpipe->setup = sp_draw_render_stage(softpipe);
+   if (!softpipe->setup)
+      goto fail;
+
+   if (debug_get_bool_option( "SP_NO_RAST", FALSE ))
+      softpipe->no_rast = TRUE;
+
+   if (debug_get_bool_option( "SP_NO_VBUF", FALSE )) {
+      /* Deprecated path -- vbuf is the intended interface to the draw module:
+       */
+      draw_set_rasterize_stage(softpipe->draw, softpipe->setup);
+   }
+   else {
+      sp_init_vbuf(softpipe);
+   }
+
+   /* plug in AA line/point stages */
+   draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
+   draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
+
+#if USE_DRAW_STAGE_PSTIPPLE
+   /* Do polygon stipple w/ texture map + frag prog? */
+   draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
+#endif
+
+   sp_init_surface_functions(softpipe);
+
+   return &softpipe->pipe;
+
+ fail:
+   softpipe_destroy(&softpipe->pipe);
+   return NULL;
+}
+