2009-09-07 14:43:51 +01:00
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/**************************************************************************
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*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Texture sampling.
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*
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* @author Jose Fonseca <jfonseca@vmware.com>
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*/
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#ifndef LP_BLD_SAMPLE_H
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#define LP_BLD_SAMPLE_H
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2010-03-15 19:50:40 +00:00
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#include "gallivm/lp_bld.h"
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2009-09-07 14:43:51 +01:00
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struct pipe_texture;
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struct pipe_sampler_state;
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2009-10-22 22:37:06 +01:00
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struct util_format_description;
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2009-09-14 11:05:06 +01:00
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struct lp_type;
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2009-10-22 22:37:06 +01:00
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struct lp_build_context;
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2009-09-07 14:43:51 +01:00
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/**
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* Sampler static state.
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*
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* These are the bits of state from pipe_texture and pipe_sampler_state that
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* are embedded in the generated code.
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*/
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struct lp_sampler_static_state
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{
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/* pipe_texture's state */
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enum pipe_format format;
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2009-09-09 21:46:18 +01:00
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unsigned target:2;
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2009-09-07 14:43:51 +01:00
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unsigned pot_width:1;
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unsigned pot_height:1;
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unsigned pot_depth:1;
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/* pipe_sampler_state's state */
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unsigned wrap_s:3;
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unsigned wrap_t:3;
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unsigned wrap_r:3;
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unsigned min_img_filter:2;
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unsigned min_mip_filter:2;
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unsigned mag_img_filter:2;
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unsigned compare_mode:1;
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unsigned compare_func:3;
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unsigned normalized_coords:1;
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2010-03-05 23:07:26 +00:00
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float lod_bias, min_lod, max_lod;
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2010-03-04 22:52:01 +00:00
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float border_color[4];
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2009-09-07 14:43:51 +01:00
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};
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/**
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* Sampler dynamic state.
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*
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* These are the bits of state from pipe_texture and pipe_sampler_state that
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* are computed in runtime.
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*
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* There are obtained through callbacks, as we don't want to tie the texture
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* sampling code generation logic to any particular texture layout or pipe
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* driver.
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*/
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struct lp_sampler_dynamic_state
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{
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/** Obtain the base texture width. */
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LLVMValueRef
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(*width)( struct lp_sampler_dynamic_state *state,
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LLVMBuilderRef builder,
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unsigned unit);
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/** Obtain the base texture height. */
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LLVMValueRef
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(*height)( struct lp_sampler_dynamic_state *state,
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LLVMBuilderRef builder,
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unsigned unit);
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2010-03-05 23:50:48 +00:00
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/** Obtain the base texture depth. */
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LLVMValueRef
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(*depth)( struct lp_sampler_dynamic_state *state,
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LLVMBuilderRef builder,
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unsigned unit);
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/** Obtain the number of mipmap levels (minus one). */
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LLVMValueRef
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(*last_level)( struct lp_sampler_dynamic_state *state,
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LLVMBuilderRef builder,
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unsigned unit);
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2009-09-07 14:43:51 +01:00
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LLVMValueRef
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2010-03-11 21:46:06 +00:00
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(*row_stride)( struct lp_sampler_dynamic_state *state,
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LLVMBuilderRef builder,
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unsigned unit);
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2009-09-07 14:43:51 +01:00
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LLVMValueRef
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(*data_ptr)( struct lp_sampler_dynamic_state *state,
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LLVMBuilderRef builder,
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unsigned unit);
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};
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/**
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* Derive the sampler static state.
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*/
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void
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lp_sampler_static_state(struct lp_sampler_static_state *state,
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const struct pipe_texture *texture,
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const struct pipe_sampler_state *sampler);
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2009-10-22 20:42:16 +01:00
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LLVMValueRef
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lp_build_gather(LLVMBuilderRef builder,
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unsigned length,
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unsigned src_width,
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unsigned dst_width,
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LLVMValueRef base_ptr,
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LLVMValueRef offsets);
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2009-10-22 22:37:06 +01:00
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LLVMValueRef
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lp_build_sample_offset(struct lp_build_context *bld,
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const struct util_format_description *format_desc,
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LLVMValueRef x,
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LLVMValueRef y,
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2010-03-11 01:07:52 +00:00
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LLVMValueRef z,
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LLVMValueRef y_stride,
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LLVMValueRef z_stride);
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2009-10-22 22:37:06 +01:00
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2009-09-07 14:43:51 +01:00
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void
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lp_build_sample_soa(LLVMBuilderRef builder,
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const struct lp_sampler_static_state *static_state,
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struct lp_sampler_dynamic_state *dynamic_state,
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2009-09-14 11:05:06 +01:00
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struct lp_type fp_type,
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2009-09-07 14:43:51 +01:00
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unsigned unit,
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unsigned num_coords,
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const LLVMValueRef *coords,
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LLVMValueRef lodbias,
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LLVMValueRef *texel);
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#endif /* LP_BLD_SAMPLE_H */
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