/* * Copyright (C) 2019 Collabora, Ltd. * * 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. * * Authors (Collabora): * Alyssa Rosenzweig * */ #ifndef __PAN_BLEND_H #define __PAN_BLEND_H #include "util/hash_table.h" /* An internal blend shader descriptor, from the compiler */ struct panfrost_blend_shader { struct panfrost_context *ctx; /* The compiled shader */ void *buffer; /* Byte count of the shader */ unsigned size; /* Number of 128-bit work registers required by the shader */ unsigned work_count; /* Offset into the shader to patch constants. Zero to disable patching * (it is illogical to have constants at offset 0). */ unsigned patch_index; /* First instruction tag (for tagging the pointer) */ unsigned first_tag; }; /* A blend shader descriptor ready for actual use */ struct panfrost_blend_shader_final { /* GPU address where we're compiled to */ uint64_t gpu; /* First instruction tag (for tagging the pointer) */ unsigned first_tag; /* Same meaning as panfrost_blend_shader */ unsigned work_count; }; struct panfrost_blend_equation_final { struct mali_blend_equation *equation; float constant; }; struct panfrost_blend_rt { /* If has_fixed_function is set, equation is the * fixed-function configuration for this blend state */ bool has_fixed_function; struct mali_blend_equation equation; /* Mask of blend color components read */ unsigned constant_mask; /* Regardless of fixed-function blending, this is a map of pipe_format * to panfrost_blend_shader */ struct hash_table_u64 *shaders; }; struct panfrost_blend_state { struct pipe_blend_state base; struct panfrost_blend_rt rt[PIPE_MAX_COLOR_BUFS]; }; /* Container for a final blend state, specialized to constants and a * framebuffer formats. */ struct panfrost_blend_final { /* Set for a shader, clear for an equation */ bool is_shader; /* Set if the destination needs to be loaded from the tilebuffer, * basically (for an equation) or if a shader is present */ bool no_blending; union { struct panfrost_blend_shader_final shader; struct panfrost_blend_equation_final equation; }; }; void panfrost_blend_context_init(struct pipe_context *pipe); struct panfrost_blend_final panfrost_get_blend_for_context(struct panfrost_context *ctx, unsigned rt, struct panfrost_bo **bo, unsigned *shader_offset); #endif