/************************************************************************** * * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. * 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, sub license, 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 NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 PIPE_CONTEXT_H #define PIPE_CONTEXT_H #include "p_state.h" #ifdef __cplusplus extern "C" { #endif struct pipe_screen; struct pipe_fence_handle; struct pipe_state_cache; struct pipe_query; struct pipe_winsys; /** * Gallium rendering context. Basically: * - state setting functions * - VBO drawing functions * - surface functions */ struct pipe_context { struct pipe_winsys *winsys; struct pipe_screen *screen; void *priv; /**< context private data (for DRI for example) */ void *draw; /**< private, for draw module (temporary?) */ void (*destroy)( struct pipe_context * ); /* Possible interface for setting edgeflags. These aren't really * vertex elements, so don't fit there. */ void (*set_edgeflags)( struct pipe_context *, const unsigned *bitfield ); /** * VBO drawing (return false on fallbacks (temporary??)) */ /*@{*/ void (*draw_arrays)( struct pipe_context *pipe, unsigned mode, unsigned start, unsigned count); void (*draw_elements)( struct pipe_context *pipe, struct pipe_buffer *indexBuffer, unsigned indexSize, unsigned mode, unsigned start, unsigned count); /* XXX: this is (probably) a temporary entrypoint, as the range * information should be available from the vertex_buffer state. * Using this to quickly evaluate a specialized path in the draw * module. */ void (*draw_range_elements)( struct pipe_context *pipe, struct pipe_buffer *indexBuffer, unsigned indexSize, unsigned minIndex, unsigned maxIndex, unsigned mode, unsigned start, unsigned count); /*@}*/ /** * Query objects */ /*@{*/ struct pipe_query *(*create_query)( struct pipe_context *pipe, unsigned query_type ); void (*destroy_query)(struct pipe_context *pipe, struct pipe_query *q); void (*begin_query)(struct pipe_context *pipe, struct pipe_query *q); void (*end_query)(struct pipe_context *pipe, struct pipe_query *q); boolean (*get_query_result)(struct pipe_context *pipe, struct pipe_query *q, boolean wait, uint64_t *result); /*@}*/ /** * State functions (create/bind/destroy state objects) */ /*@{*/ void * (*create_blend_state)(struct pipe_context *, const struct pipe_blend_state *); void (*bind_blend_state)(struct pipe_context *, void *); void (*delete_blend_state)(struct pipe_context *, void *); void * (*create_sampler_state)(struct pipe_context *, const struct pipe_sampler_state *); void (*bind_fragment_sampler_states)(struct pipe_context *, unsigned num_samplers, void **samplers); void (*bind_vertex_sampler_states)(struct pipe_context *, unsigned num_samplers, void **samplers); void (*delete_sampler_state)(struct pipe_context *, void *); void * (*create_rasterizer_state)(struct pipe_context *, const struct pipe_rasterizer_state *); void (*bind_rasterizer_state)(struct pipe_context *, void *); void (*delete_rasterizer_state)(struct pipe_context *, void *); void * (*create_depth_stencil_alpha_state)(struct pipe_context *, const struct pipe_depth_stencil_alpha_state *); void (*bind_depth_stencil_alpha_state)(struct pipe_context *, void *); void (*delete_depth_stencil_alpha_state)(struct pipe_context *, void *); void * (*create_fs_state)(struct pipe_context *, const struct pipe_shader_state *); void (*bind_fs_state)(struct pipe_context *, void *); void (*delete_fs_state)(struct pipe_context *, void *); void * (*create_vs_state)(struct pipe_context *, const struct pipe_shader_state *); void (*bind_vs_state)(struct pipe_context *, void *); void (*delete_vs_state)(struct pipe_context *, void *); /*@}*/ /** * Parameter-like state (or properties) */ /*@{*/ void (*set_blend_color)( struct pipe_context *, const struct pipe_blend_color * ); void (*set_clip_state)( struct pipe_context *, const struct pipe_clip_state * ); void (*set_constant_buffer)( struct pipe_context *, uint shader, uint index, const struct pipe_constant_buffer *buf ); void (*set_framebuffer_state)( struct pipe_context *, const struct pipe_framebuffer_state * ); void (*set_polygon_stipple)( struct pipe_context *, const struct pipe_poly_stipple * ); void (*set_scissor_state)( struct pipe_context *, const struct pipe_scissor_state * ); void (*set_viewport_state)( struct pipe_context *, const struct pipe_viewport_state * ); void (*set_fragment_sampler_textures)(struct pipe_context *, unsigned num_textures, struct pipe_texture **); void (*set_vertex_sampler_textures)(struct pipe_context *, unsigned num_textures, struct pipe_texture **); void (*set_vertex_buffers)( struct pipe_context *, unsigned num_buffers, const struct pipe_vertex_buffer * ); void (*set_vertex_elements)( struct pipe_context *, unsigned num_elements, const struct pipe_vertex_element * ); /*@}*/ /** * Surface functions * * The pipe driver is allowed to set these functions to NULL, and in that * case, they will not be available. */ /*@{*/ /** * Copy a block of pixels from one surface to another. * The surfaces must be of the same format. */ void (*surface_copy)(struct pipe_context *pipe, struct pipe_surface *dest, unsigned destx, unsigned desty, struct pipe_surface *src, unsigned srcx, unsigned srcy, unsigned width, unsigned height); /** * Fill a region of a surface with a constant value. */ void (*surface_fill)(struct pipe_context *pipe, struct pipe_surface *dst, unsigned dstx, unsigned dsty, unsigned width, unsigned height, unsigned value); /*@}*/ /** * Clear the specified set of currently bound buffers to specified values. * The entire buffers are cleared (no scissor, no colormask, etc). * * \param buffers bitfield of PIPE_CLEAR_* values. * \param rgba pointer to an array of one float for each of r, g, b, a. * \param depth depth clear value in [0,1]. * \param stencil stencil clear value */ void (*clear)(struct pipe_context *pipe, unsigned buffers, const float *rgba, double depth, unsigned stencil); /** Flush rendering * \param flags bitmask of PIPE_FLUSH_x tokens) */ void (*flush)( struct pipe_context *pipe, unsigned flags, struct pipe_fence_handle **fence ); /** * Check whether a texture is referenced by an unflushed hw command. * The state-tracker uses this function to optimize away unnecessary * flushes. It is safe (but wasteful) to always return. * PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE. * \param pipe The pipe context whose unflushed hw commands will be * checked. * \param level mipmap level. * \param texture texture to check. * \param face cubemap face. Use 0 for non-cubemap texture. */ unsigned int (*is_texture_referenced) (struct pipe_context *pipe, struct pipe_texture *texture, unsigned face, unsigned level); /** * Check whether a buffer is referenced by an unflushed hw command. * The state-tracker uses this function to optimize away unnecessary * flushes. It is safe (but wasteful) to always return * PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE. * \param pipe The pipe context whose unflushed hw commands will be * checked. * \param buf Buffer to check. */ unsigned int (*is_buffer_referenced) (struct pipe_context *pipe, struct pipe_buffer *buf); }; #ifdef __cplusplus } #endif #endif /* PIPE_CONTEXT_H */