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| /* |
| * Copyright © 2011 Intel Corporation |
| * |
| * 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 (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 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 BRW_PROGRAM_H |
| #define BRW_PROGRAM_H |
| |
| /** |
| * Program key structures. |
| * |
| * When drawing, we look for the currently bound shaders in the program |
| * cache. This is essentially a hash table lookup, and these are the keys. |
| * |
| * Sometimes OpenGL features specified as state need to be simulated via |
| * shader code, due to a mismatch between the API and the hardware. This |
| * is often referred to as "non-orthagonal state" or "NOS". We store NOS |
| * in the program key so it's considered when searching for a program. If |
| * we haven't seen a particular combination before, we have to recompile a |
| * new specialized version. |
| * |
| * Shader compilation should not look up state in gl_context directly, but |
| * instead use the copy in the program key. This guarantees recompiles will |
| * happen correctly. |
| * |
| * @{ |
| */ |
| |
| enum PACKED gen6_gather_sampler_wa { |
| WA_SIGN = 1, /* whether we need to sign extend */ |
| WA_8BIT = 2, /* if we have an 8bit format needing wa */ |
| WA_16BIT = 4, /* if we have a 16bit format needing wa */ |
| }; |
| |
| /** |
| * Sampler information needed by VS, WM, and GS program cache keys. |
| */ |
| struct brw_sampler_prog_key_data { |
| /** |
| * EXT_texture_swizzle and DEPTH_TEXTURE_MODE swizzles. |
| */ |
| uint16_t swizzles[MAX_SAMPLERS]; |
| |
| uint32_t gl_clamp_mask[3]; |
| |
| /** |
| * For RG32F, gather4's channel select is broken. |
| */ |
| uint32_t gather_channel_quirk_mask; |
| |
| /** |
| * Whether this sampler uses the compressed multisample surface layout. |
| */ |
| uint32_t compressed_multisample_layout_mask; |
| |
| /** |
| * For Sandybridge, which shader w/a we need for gather quirks. |
| */ |
| enum gen6_gather_sampler_wa gen6_gather_wa[MAX_SAMPLERS]; |
| }; |
| |
| |
| struct brw_vue_prog_key { |
| unsigned program_string_id; |
| |
| /** |
| * True if at least one clip flag is enabled, regardless of whether the |
| * shader uses clip planes or gl_ClipDistance. |
| */ |
| bool userclip_active:1; |
| |
| /** |
| * How many user clipping planes are being uploaded to the vertex shader as |
| * push constants. |
| */ |
| unsigned nr_userclip_plane_consts:4; |
| |
| struct brw_sampler_prog_key_data tex; |
| }; |
| |
| /** The program key for Vertex Shaders. */ |
| struct brw_vs_prog_key { |
| struct brw_vue_prog_key base; |
| |
| /* |
| * Per-attribute workaround flags |
| */ |
| uint8_t gl_attrib_wa_flags[VERT_ATTRIB_MAX]; |
| |
| bool copy_edgeflag:1; |
| |
| bool clamp_vertex_color:1; |
| |
| /** |
| * For pre-Gen6 hardware, a bitfield indicating which texture coordinates |
| * are going to be replaced with point coordinates (as a consequence of a |
| * call to glTexEnvi(GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE)). Because |
| * our SF thread requires exact matching between VS outputs and FS inputs, |
| * these texture coordinates will need to be unconditionally included in |
| * the VUE, even if they aren't written by the vertex shader. |
| */ |
| uint8_t point_coord_replace; |
| }; |
| |
| /** The program key for Geometry Shaders. */ |
| struct brw_gs_prog_key |
| { |
| struct brw_vue_prog_key base; |
| |
| uint64_t input_varyings; |
| }; |
| |
| /** The program key for Fragment/Pixel Shaders. */ |
| struct brw_wm_prog_key { |
| uint8_t iz_lookup; |
| bool stats_wm:1; |
| bool flat_shade:1; |
| bool persample_shading:1; |
| bool persample_2x:1; |
| unsigned nr_color_regions:5; |
| bool replicate_alpha:1; |
| bool render_to_fbo:1; |
| bool clamp_fragment_color:1; |
| bool compute_pos_offset:1; |
| bool compute_sample_id:1; |
| unsigned line_aa:2; |
| bool high_quality_derivatives:1; |
| |
| uint16_t drawable_height; |
| uint64_t input_slots_valid; |
| unsigned program_string_id; |
| GLenum alpha_test_func; /* < For Gen4/5 MRT alpha test */ |
| float alpha_test_ref; |
| |
| struct brw_sampler_prog_key_data tex; |
| }; |
| |
| /** @} */ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| void brw_populate_sampler_prog_key_data(struct gl_context *ctx, |
| const struct gl_program *prog, |
| unsigned sampler_count, |
| struct brw_sampler_prog_key_data *key); |
| bool brw_debug_recompile_sampler_key(struct brw_context *brw, |
| const struct brw_sampler_prog_key_data *old_key, |
| const struct brw_sampler_prog_key_data *key); |
| void brw_add_texrect_params(struct gl_program *prog); |
| |
| void |
| brw_mark_surface_used(struct brw_stage_prog_data *prog_data, |
| unsigned surf_index); |
| |
| bool |
| brw_stage_prog_data_compare(const struct brw_stage_prog_data *a, |
| const struct brw_stage_prog_data *b); |
| |
| void |
| brw_stage_prog_data_free(const void *prog_data); |
| |
| void |
| brw_dump_ir(const char *stage, struct gl_shader_program *shader_prog, |
| struct gl_shader *shader, struct gl_program *prog); |
| |
| #ifdef __cplusplus |
| } /* extern "C" */ |
| #endif |
| |
| #endif |