| /************************************************************************** |
| * |
| * 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. |
| * |
| **************************************************************************/ |
| |
| /* Authors: |
| * Brian Paul |
| */ |
| |
| #include "util/u_memory.h" |
| #include "util/u_inlines.h" |
| |
| #include "draw/draw_context.h" |
| |
| #include "sp_context.h" |
| #include "sp_state.h" |
| #include "sp_texture.h" |
| #include "sp_tex_sample.h" |
| #include "sp_tex_tile_cache.h" |
| |
| |
| struct sp_sampler { |
| struct pipe_sampler_state base; |
| struct sp_sampler_variant *variants; |
| struct sp_sampler_variant *current; |
| }; |
| |
| static struct sp_sampler *sp_sampler( struct pipe_sampler_state *sampler ) |
| { |
| return (struct sp_sampler *)sampler; |
| } |
| |
| |
| static void * |
| softpipe_create_sampler_state(struct pipe_context *pipe, |
| const struct pipe_sampler_state *sampler) |
| { |
| struct sp_sampler *sp_sampler = CALLOC_STRUCT(sp_sampler); |
| |
| sp_sampler->base = *sampler; |
| sp_sampler->variants = NULL; |
| |
| return (void *)sp_sampler; |
| } |
| |
| |
| /** |
| * Bind a range [start, start+num-1] of samplers for a shader stage. |
| */ |
| static void |
| softpipe_bind_sampler_states(struct pipe_context *pipe, |
| unsigned shader, |
| unsigned start, |
| unsigned num, |
| void **samplers) |
| { |
| struct softpipe_context *softpipe = softpipe_context(pipe); |
| unsigned i; |
| |
| assert(shader < PIPE_SHADER_TYPES); |
| assert(start + num <= Elements(softpipe->samplers[shader])); |
| |
| /* Check for no-op */ |
| if (start + num <= softpipe->num_samplers[shader] && |
| !memcmp(softpipe->samplers[shader] + start, samplers, |
| num * sizeof(void *))) { |
| return; |
| } |
| |
| draw_flush(softpipe->draw); |
| |
| /* set the new samplers */ |
| for (i = 0; i < num; i++) { |
| softpipe->samplers[shader][start + i] = samplers[i]; |
| } |
| |
| /* find highest non-null samplers[] entry */ |
| { |
| unsigned j = MAX2(softpipe->num_samplers[shader], start + num); |
| while (j > 0 && softpipe->samplers[shader][j - 1] == NULL) |
| j--; |
| softpipe->num_samplers[shader] = j; |
| } |
| |
| if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) { |
| draw_set_samplers(softpipe->draw, |
| shader, |
| softpipe->samplers[shader], |
| softpipe->num_samplers[shader]); |
| } |
| |
| softpipe->dirty |= SP_NEW_SAMPLER; |
| } |
| |
| |
| |
| static void |
| softpipe_bind_fragment_sampler_states(struct pipe_context *pipe, |
| unsigned num, void **samplers) |
| { |
| softpipe_bind_sampler_states(pipe, PIPE_SHADER_FRAGMENT, 0, num, samplers); |
| } |
| |
| |
| static void |
| softpipe_bind_vertex_sampler_states(struct pipe_context *pipe, |
| unsigned num, |
| void **samplers) |
| { |
| softpipe_bind_sampler_states(pipe, PIPE_SHADER_VERTEX, 0, num, samplers); |
| } |
| |
| |
| static void |
| softpipe_bind_geometry_sampler_states(struct pipe_context *pipe, |
| unsigned num, |
| void **samplers) |
| { |
| softpipe_bind_sampler_states(pipe, PIPE_SHADER_GEOMETRY, 0, num, samplers); |
| } |
| |
| |
| static struct pipe_sampler_view * |
| softpipe_create_sampler_view(struct pipe_context *pipe, |
| struct pipe_resource *resource, |
| const struct pipe_sampler_view *templ) |
| { |
| struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view); |
| |
| if (view) { |
| *view = *templ; |
| view->reference.count = 1; |
| view->texture = NULL; |
| pipe_resource_reference(&view->texture, resource); |
| view->context = pipe; |
| } |
| |
| return view; |
| } |
| |
| |
| static void |
| softpipe_sampler_view_destroy(struct pipe_context *pipe, |
| struct pipe_sampler_view *view) |
| { |
| pipe_resource_reference(&view->texture, NULL); |
| FREE(view); |
| } |
| |
| |
| static void |
| softpipe_set_sampler_views(struct pipe_context *pipe, |
| unsigned shader, |
| unsigned start, |
| unsigned num, |
| struct pipe_sampler_view **views) |
| { |
| struct softpipe_context *softpipe = softpipe_context(pipe); |
| uint i; |
| |
| assert(shader < PIPE_SHADER_TYPES); |
| assert(start + num <= Elements(softpipe->sampler_views[shader])); |
| |
| /* Check for no-op */ |
| if (start + num <= softpipe->num_sampler_views[shader] && |
| !memcmp(softpipe->sampler_views[shader] + start, views, |
| num * sizeof(struct pipe_sampler_view *))) { |
| return; |
| } |
| |
| draw_flush(softpipe->draw); |
| |
| /* set the new sampler views */ |
| for (i = 0; i < num; i++) { |
| pipe_sampler_view_reference(&softpipe->sampler_views[shader][start + i], |
| views[i]); |
| sp_tex_tile_cache_set_sampler_view(softpipe->tex_cache[shader][start + i], |
| views[i]); |
| } |
| |
| /* find highest non-null sampler_views[] entry */ |
| { |
| unsigned j = MAX2(softpipe->num_sampler_views[shader], start + num); |
| while (j > 0 && softpipe->sampler_views[shader][j - 1] == NULL) |
| j--; |
| softpipe->num_sampler_views[shader] = j; |
| } |
| |
| if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) { |
| draw_set_sampler_views(softpipe->draw, |
| shader, |
| softpipe->sampler_views[shader], |
| softpipe->num_sampler_views[shader]); |
| } |
| |
| softpipe->dirty |= SP_NEW_TEXTURE; |
| } |
| |
| |
| static void |
| softpipe_set_fragment_sampler_views(struct pipe_context *pipe, |
| unsigned num, |
| struct pipe_sampler_view **views) |
| { |
| softpipe_set_sampler_views(pipe, PIPE_SHADER_FRAGMENT, 0, num, views); |
| } |
| |
| |
| static void |
| softpipe_set_vertex_sampler_views(struct pipe_context *pipe, |
| unsigned num, |
| struct pipe_sampler_view **views) |
| { |
| softpipe_set_sampler_views(pipe, PIPE_SHADER_VERTEX, 0, num, views); |
| } |
| |
| |
| static void |
| softpipe_set_geometry_sampler_views(struct pipe_context *pipe, |
| unsigned num, |
| struct pipe_sampler_view **views) |
| { |
| softpipe_set_sampler_views(pipe, PIPE_SHADER_GEOMETRY, 0, num, views); |
| } |
| |
| |
| /** |
| * Find/create an sp_sampler_variant object for sampling the given texture, |
| * sampler and tex unit. |
| * |
| * Note that the tex unit is significant. We can't re-use a sampler |
| * variant for multiple texture units because the sampler variant contains |
| * the texture object pointer. If the texture object pointer were stored |
| * somewhere outside the sampler variant, we could re-use samplers for |
| * multiple texture units. |
| */ |
| static struct sp_sampler_variant * |
| get_sampler_variant( unsigned unit, |
| struct sp_sampler *sampler, |
| struct pipe_sampler_view *view, |
| unsigned processor ) |
| { |
| struct softpipe_resource *sp_texture = softpipe_resource(view->texture); |
| struct sp_sampler_variant *v = NULL; |
| union sp_sampler_key key; |
| |
| /* if this fails, widen the key.unit field and update this assertion */ |
| assert(PIPE_MAX_SAMPLERS <= 16); |
| |
| key.bits.target = sp_texture->base.target; |
| key.bits.is_pot = sp_texture->pot; |
| key.bits.processor = processor; |
| key.bits.unit = unit; |
| key.bits.swizzle_r = view->swizzle_r; |
| key.bits.swizzle_g = view->swizzle_g; |
| key.bits.swizzle_b = view->swizzle_b; |
| key.bits.swizzle_a = view->swizzle_a; |
| key.bits.pad = 0; |
| |
| if (sampler->current && |
| key.value == sampler->current->key.value) { |
| v = sampler->current; |
| } |
| |
| if (v == NULL) { |
| for (v = sampler->variants; v; v = v->next) |
| if (v->key.value == key.value) |
| break; |
| |
| if (v == NULL) { |
| v = sp_create_sampler_variant( &sampler->base, key ); |
| v->next = sampler->variants; |
| sampler->variants = v; |
| } |
| } |
| |
| sampler->current = v; |
| return v; |
| } |
| |
| |
| /** |
| * Reset the sampler variants for a shader stage (vert, frag, geom). |
| */ |
| static void |
| reset_sampler_variants(struct softpipe_context *softpipe, |
| unsigned shader, |
| unsigned tgsi_shader, |
| int max_sampler) |
| { |
| int i; |
| |
| for (i = 0; i <= max_sampler; i++) { |
| if (softpipe->samplers[shader][i]) { |
| softpipe->tgsi.samplers_list[shader][i] = |
| get_sampler_variant(i, |
| sp_sampler(softpipe->samplers[shader][i]), |
| softpipe->sampler_views[shader][i], |
| tgsi_shader); |
| |
| sp_sampler_variant_bind_view(softpipe->tgsi.samplers_list[shader][i], |
| softpipe->tex_cache[shader][i], |
| softpipe->sampler_views[shader][i]); |
| } |
| } |
| } |
| |
| |
| void |
| softpipe_reset_sampler_variants(struct softpipe_context *softpipe) |
| { |
| /* It's a bit hard to build these samplers ahead of time -- don't |
| * really know which samplers are going to be used for vertex and |
| * fragment programs. |
| */ |
| |
| /* XXX note: PIPE_SHADER_x != TGSI_PROCESSOR_x (fix that someday) */ |
| reset_sampler_variants(softpipe, |
| PIPE_SHADER_VERTEX, |
| TGSI_PROCESSOR_VERTEX, |
| softpipe->vs->max_sampler); |
| |
| reset_sampler_variants(softpipe, |
| PIPE_SHADER_FRAGMENT, |
| TGSI_PROCESSOR_FRAGMENT, |
| softpipe->fs_variant->info.file_max[TGSI_FILE_SAMPLER]); |
| |
| if (softpipe->gs) { |
| reset_sampler_variants(softpipe, |
| PIPE_SHADER_GEOMETRY, |
| TGSI_PROCESSOR_GEOMETRY, |
| softpipe->gs->max_sampler); |
| } |
| } |
| |
| |
| static void |
| softpipe_delete_sampler_state(struct pipe_context *pipe, |
| void *sampler) |
| { |
| struct sp_sampler *sp_sampler = (struct sp_sampler *)sampler; |
| struct sp_sampler_variant *v, *tmp; |
| |
| for (v = sp_sampler->variants; v; v = tmp) { |
| tmp = v->next; |
| sp_sampler_variant_destroy(v); |
| } |
| |
| FREE( sampler ); |
| } |
| |
| |
| void |
| softpipe_init_sampler_funcs(struct pipe_context *pipe) |
| { |
| pipe->create_sampler_state = softpipe_create_sampler_state; |
| pipe->bind_fragment_sampler_states = softpipe_bind_fragment_sampler_states; |
| pipe->bind_vertex_sampler_states = softpipe_bind_vertex_sampler_states; |
| pipe->bind_geometry_sampler_states = softpipe_bind_geometry_sampler_states; |
| pipe->delete_sampler_state = softpipe_delete_sampler_state; |
| |
| pipe->set_fragment_sampler_views = softpipe_set_fragment_sampler_views; |
| pipe->set_vertex_sampler_views = softpipe_set_vertex_sampler_views; |
| pipe->set_geometry_sampler_views = softpipe_set_geometry_sampler_views; |
| |
| pipe->create_sampler_view = softpipe_create_sampler_view; |
| pipe->sampler_view_destroy = softpipe_sampler_view_destroy; |
| } |
| |