/********************************************************** * Copyright 2008-2009 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, sublicense, 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 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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * 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. * **********************************************************/ #ifndef SVGA_TGSI_H #define SVGA_TGSI_H #include "pipe/p_state.h" #include "svga_hw_reg.h" /** * We use a 32-bit mask to keep track of the generic indexes. */ #define MAX_GENERIC_VARYING 32 struct svga_fragment_shader; struct svga_vertex_shader; struct svga_shader; struct tgsi_shader_info; struct tgsi_token; struct svga_vs_compile_key { unsigned fs_generic_inputs; unsigned need_prescale:1; unsigned allow_psiz:1; unsigned adjust_attrib_range:16; unsigned adjust_attrib_w_1:16; }; struct svga_fs_compile_key { unsigned light_twoside:1; unsigned front_ccw:1; unsigned white_fragments:1; unsigned write_color0_to_n_cbufs:3; unsigned num_textures:8; unsigned num_unnormalized_coords:8; unsigned sprite_origin_lower_left:1; struct { unsigned compare_mode:1; unsigned compare_func:3; unsigned unnormalized:1; unsigned width_height_idx:7; unsigned texture_target:8; unsigned sprite_texgen:1; unsigned swizzle_r:3; unsigned swizzle_g:3; unsigned swizzle_b:3; unsigned swizzle_a:3; } tex[PIPE_MAX_SAMPLERS]; }; /** * Key/index for identifying shader variants. */ struct svga_compile_key { struct svga_vs_compile_key vkey; struct svga_fs_compile_key fkey; int8_t generic_remap_table[MAX_GENERIC_VARYING]; }; /** * A single TGSI shader may be compiled into different variants of * SVGA3D shaders depending on the compile key. Each user shader * will have a linked list of these variants. */ struct svga_shader_variant { const struct svga_shader *shader; /** Parameters used to generate this variant */ struct svga_compile_key key; /* Compiled shader tokens: */ const unsigned *tokens; unsigned nr_tokens; /** Per-context shader identifier used with SVGA_3D_CMD_SHADER_DEFINE, * SVGA_3D_CMD_SET_SHADER and SVGA_3D_CMD_SHADER_DESTROY. */ unsigned id; /* GB object buffer containing the bytecode */ struct svga_winsys_gb_shader *gb_shader; /** Next variant */ struct svga_shader_variant *next; }; /* TGSI doesn't provide use with VS input semantics (they're actually * pretty meaningless), so we just generate some plausible ones here. * This is called both from within the TGSI translator and when * building vdecls to ensure they match up. * * The real use of this information is matching vertex elements to * fragment shader inputs in the case where vertex shader is disabled. */ static inline void svga_generate_vdecl_semantics( unsigned idx, unsigned *usage, unsigned *usage_index ) { if (idx == 0) { *usage = SVGA3D_DECLUSAGE_POSITION; *usage_index = 0; } else { *usage = SVGA3D_DECLUSAGE_TEXCOORD; *usage_index = idx - 1; } } static inline unsigned svga_vs_key_size( const struct svga_vs_compile_key *key ) { return sizeof *key; } static inline unsigned svga_fs_key_size( const struct svga_fs_compile_key *key ) { return (const char *)&key->tex[key->num_textures] - (const char *)key; } struct svga_shader_variant * svga_translate_fragment_program( const struct svga_fragment_shader *fs, const struct svga_fs_compile_key *fkey ); struct svga_shader_variant * svga_translate_vertex_program( const struct svga_vertex_shader *fs, const struct svga_vs_compile_key *vkey ); unsigned svga_get_generic_inputs_mask(const struct tgsi_shader_info *info); unsigned svga_get_generic_outputs_mask(const struct tgsi_shader_info *info); void svga_remap_generics(unsigned generics_mask, int8_t remap_table[MAX_GENERIC_VARYING]); int svga_remap_generic_index(int8_t remap_table[MAX_GENERIC_VARYING], int generic_index); #endif