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      1 /**************************************************************************
      2  *
      3  * Copyright 2010 VMware, Inc.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     17  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
     18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
     21  *
     22  * The above copyright notice and this permission notice (including the
     23  * next paragraph) shall be included in all copies or substantial portions
     24  * of the Software.
     25  *
     26  **************************************************************************/
     27 
     28 
     29 #ifndef LP_STATE_FS_H_
     30 #define LP_STATE_FS_H_
     31 
     32 
     33 #include "pipe/p_compiler.h"
     34 #include "pipe/p_state.h"
     35 #include "tgsi/tgsi_scan.h" /* for tgsi_shader_info */
     36 #include "gallivm/lp_bld_sample.h" /* for struct lp_sampler_static_state */
     37 #include "gallivm/lp_bld_tgsi.h" /* for lp_tgsi_info */
     38 #include "lp_bld_interp.h" /* for struct lp_shader_input */
     39 
     40 
     41 struct tgsi_token;
     42 struct lp_fragment_shader;
     43 
     44 
     45 /** Indexes into jit_function[] array */
     46 #define RAST_WHOLE 0
     47 #define RAST_EDGE_TEST 1
     48 
     49 
     50 struct lp_sampler_static_state
     51 {
     52    /*
     53     * These attributes are effectively interleaved for more sane key handling.
     54     * However, there might be lots of null space if the amount of samplers and
     55     * textures isn't the same.
     56     */
     57    struct lp_static_sampler_state sampler_state;
     58    struct lp_static_texture_state texture_state;
     59 };
     60 
     61 
     62 struct lp_fragment_shader_variant_key
     63 {
     64    struct pipe_depth_state depth;
     65    struct pipe_stencil_state stencil[2];
     66    struct pipe_blend_state blend;
     67 
     68    struct {
     69       unsigned enabled:1;
     70       unsigned func:3;
     71    } alpha;
     72 
     73    unsigned nr_cbufs:8;
     74    unsigned nr_samplers:8;      /* actually derivable from just the shader */
     75    unsigned nr_sampler_views:8; /* actually derivable from just the shader */
     76    unsigned flatshade:1;
     77    unsigned occlusion_count:1;
     78    unsigned resource_1d:1;
     79    unsigned depth_clamp:1;
     80 
     81    enum pipe_format zsbuf_format;
     82    enum pipe_format cbuf_format[PIPE_MAX_COLOR_BUFS];
     83 
     84    struct lp_sampler_static_state state[PIPE_MAX_SHADER_SAMPLER_VIEWS];
     85 };
     86 
     87 
     88 /** doubly-linked list item */
     89 struct lp_fs_variant_list_item
     90 {
     91    struct lp_fragment_shader_variant *base;
     92    struct lp_fs_variant_list_item *next, *prev;
     93 };
     94 
     95 
     96 struct lp_fragment_shader_variant
     97 {
     98    struct lp_fragment_shader_variant_key key;
     99 
    100    boolean opaque;
    101    uint8_t ps_inv_multiplier;
    102 
    103    struct gallivm_state *gallivm;
    104 
    105    LLVMTypeRef jit_context_ptr_type;
    106    LLVMTypeRef jit_thread_data_ptr_type;
    107    LLVMTypeRef jit_linear_context_ptr_type;
    108 
    109    LLVMValueRef function[2];
    110 
    111    lp_jit_frag_func jit_function[2];
    112 
    113    /* Total number of LLVM instructions generated */
    114    unsigned nr_instrs;
    115 
    116    struct lp_fs_variant_list_item list_item_global, list_item_local;
    117    struct lp_fragment_shader *shader;
    118 
    119    /* For debugging/profiling purposes */
    120    unsigned no;
    121 };
    122 
    123 
    124 /** Subclass of pipe_shader_state */
    125 struct lp_fragment_shader
    126 {
    127    struct pipe_shader_state base;
    128 
    129    struct lp_tgsi_info info;
    130 
    131    struct lp_fs_variant_list_item variants;
    132 
    133    struct draw_fragment_shader *draw_data;
    134 
    135    /* For debugging/profiling purposes */
    136    unsigned variant_key_size;
    137    unsigned no;
    138    unsigned variants_created;
    139    unsigned variants_cached;
    140 
    141    /** Fragment shader input interpolation info */
    142    struct lp_shader_input inputs[PIPE_MAX_SHADER_INPUTS];
    143 };
    144 
    145 
    146 void
    147 lp_debug_fs_variant(const struct lp_fragment_shader_variant *variant);
    148 
    149 void
    150 llvmpipe_remove_shader_variant(struct llvmpipe_context *lp,
    151                                struct lp_fragment_shader_variant *variant);
    152 
    153 boolean
    154 llvmpipe_rasterization_disabled(struct llvmpipe_context *lp);
    155 
    156 
    157 #endif /* LP_STATE_FS_H_ */
    158