/************************************************************************** * * 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 * ); /** * VBO drawing */ /*@{*/ void (*draw_arrays)( struct pipe_context *pipe, unsigned mode, unsigned start, unsigned count); void (*draw_elements)( struct pipe_context *pipe, struct pipe_resource *indexBuffer, unsigned indexSize, int indexBias, unsigned mode, unsigned start, unsigned count); void (*draw_arrays_instanced)(struct pipe_context *pipe, unsigned mode, unsigned start, unsigned count, unsigned startInstance, unsigned instanceCount); void (*draw_elements_instanced)(struct pipe_context *pipe, struct pipe_resource *indexBuffer, unsigned indexSize, int indexBias, unsigned mode, unsigned start, unsigned count, unsigned startInstance, unsigned instanceCount); /* 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_resource *indexBuffer, unsigned indexSize, int indexBias, unsigned minIndex, unsigned maxIndex, unsigned mode, unsigned start, unsigned count); void (*draw_vbo)( struct pipe_context *pipe, const struct pipe_draw_info *info ); /** * Draw the stream output buffer at index 0 */ void (*draw_stream_output)( struct pipe_context *pipe, unsigned mode ); /*@}*/ /** * Predicate subsequent rendering on occlusion query result * \param query the query predicate, or NULL if no predicate * \param mode one of PIPE_RENDER_COND_x */ void (*render_condition)( struct pipe_context *pipe, struct pipe_query *query, uint mode ); /** * 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); /** * Get results of a query. * \param wait if true, this query will block until the result is ready * \return TRUE if results are ready, FALSE otherwise */ boolean (*get_query_result)(struct pipe_context *pipe, struct pipe_query *q, boolean wait, void *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 (*bind_geometry_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 *); void * (*create_gs_state)(struct pipe_context *, const struct pipe_shader_state *); void (*bind_gs_state)(struct pipe_context *, void *); void (*delete_gs_state)(struct pipe_context *, void *); void * (*create_vertex_elements_state)(struct pipe_context *, unsigned num_elements, const struct pipe_vertex_element *); void (*bind_vertex_elements_state)(struct pipe_context *, void *); void (*delete_vertex_elements_state)(struct pipe_context *, void *); void * (*create_stream_output_state)(struct pipe_context *, const struct pipe_stream_output_state *); void (*bind_stream_output_state)(struct pipe_context *, void *); void (*delete_stream_output_state)(struct pipe_context*, void*); /*@}*/ /** * Parameter-like state (or properties) */ /*@{*/ void (*set_blend_color)( struct pipe_context *, const struct pipe_blend_color * ); void (*set_stencil_ref)( struct pipe_context *, const struct pipe_stencil_ref * ); void (*set_sample_mask)( struct pipe_context *, unsigned sample_mask ); void (*set_clip_state)( struct pipe_context *, const struct pipe_clip_state * ); void (*set_constant_buffer)( struct pipe_context *, uint shader, uint index, struct pipe_resource *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_views)(struct pipe_context *, unsigned num_views, struct pipe_sampler_view **); void (*set_vertex_sampler_views)(struct pipe_context *, unsigned num_views, struct pipe_sampler_view **); void (*set_geometry_sampler_views)(struct pipe_context *, unsigned num_views, struct pipe_sampler_view **); void (*set_vertex_buffers)( struct pipe_context *, unsigned num_buffers, const struct pipe_vertex_buffer * ); void (*set_index_buffer)( struct pipe_context *pipe, const struct pipe_index_buffer * ); void (*set_stream_output_buffers)(struct pipe_context *, struct pipe_resource **buffers, int *offsets, /*array of offsets from the start of each of the buffers */ int num_buffers); /*@}*/ /** * Resource functions for blit-like functionality * * If a driver supports multisampling, resource_resolve must be available. */ /*@{*/ /** * Copy a block of pixels from one resource to another. * The resource must be of the same format. * Resources with nr_samples > 1 are not allowed. */ void (*resource_copy_region)(struct pipe_context *pipe, struct pipe_resource *dst, struct pipe_subresource subdst, unsigned dstx, unsigned dsty, unsigned dstz, struct pipe_resource *src, struct pipe_subresource subsrc, unsigned srcx, unsigned srcy, unsigned srcz, unsigned width, unsigned height); /** * Resolve a multisampled resource into a non-multisampled one. * Source and destination must have the same size and same format. */ void (*resource_resolve)(struct pipe_context *pipe, struct pipe_resource *dst, struct pipe_subresource subdst, struct pipe_resource *src, struct pipe_subresource subsrc); /*@}*/ /** * 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); /** * Clear a color rendertarget surface. * \param rgba pointer to an array of one float for each of r, g, b, a. */ void (*clear_render_target)(struct pipe_context *pipe, struct pipe_surface *dst, const float *rgba, unsigned dstx, unsigned dsty, unsigned width, unsigned height); /** * Clear a depth-stencil surface. * \param clear_flags bitfield of PIPE_CLEAR_DEPTH/STENCIL values. * \param depth depth clear value in [0,1]. * \param stencil stencil clear value */ void (*clear_depth_stencil)(struct pipe_context *pipe, struct pipe_surface *dst, unsigned clear_flags, double depth, unsigned stencil, unsigned dstx, unsigned dsty, unsigned width, unsigned height); /** 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 avoid unnecessary flushes. * It is safe (but wasteful) to always return * PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE. * \param pipe context whose unflushed hw commands will be checked. * \param texture texture to check. * \param face cubemap face. Use 0 for non-cubemap texture. * \param level mipmap level. * \return mask of PIPE_REFERENCED_FOR_READ/WRITE or PIPE_UNREFERENCED */ unsigned int (*is_resource_referenced)(struct pipe_context *pipe, struct pipe_resource *texture, unsigned face, unsigned level); /** * Create a view on a texture to be used by a shader stage. */ struct pipe_sampler_view * (*create_sampler_view)(struct pipe_context *ctx, struct pipe_resource *texture, const struct pipe_sampler_view *templat); void (*sampler_view_destroy)(struct pipe_context *ctx, struct pipe_sampler_view *view); /** * Get a transfer object for transferring data to/from a texture. * * Transfers are (by default) context-private and allow uploads to be * interleaved with */ struct pipe_transfer *(*get_transfer)(struct pipe_context *, struct pipe_resource *resource, struct pipe_subresource, unsigned usage, /* a combination of PIPE_TRANSFER_x */ const struct pipe_box *); void (*transfer_destroy)(struct pipe_context *, struct pipe_transfer *); void *(*transfer_map)( struct pipe_context *, struct pipe_transfer *transfer ); /* If transfer was created with WRITE|FLUSH_EXPLICIT, only the * regions specified with this call are guaranteed to be written to * the resource. */ void (*transfer_flush_region)( struct pipe_context *, struct pipe_transfer *transfer, const struct pipe_box *); void (*transfer_unmap)( struct pipe_context *, struct pipe_transfer *transfer ); /* One-shot transfer operation with data supplied in a user * pointer. XXX: strides?? */ void (*transfer_inline_write)( struct pipe_context *, struct pipe_resource *, struct pipe_subresource, unsigned usage, /* a combination of PIPE_TRANSFER_x */ const struct pipe_box *, const void *data, unsigned stride, unsigned slice_stride); }; #ifdef __cplusplus } #endif #endif /* PIPE_CONTEXT_H */