/**************************************************************************
*
* Copyright 2007 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, 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 VMWARE 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_compiler.h"
#include "p_format.h"
#include "p_video_enums.h"
#include "p_defines.h"
#ifdef __cplusplus
extern "C" {
#endif
struct pipe_blend_color;
struct pipe_blend_state;
struct pipe_blit_info;
struct pipe_box;
struct pipe_clip_state;
struct pipe_constant_buffer;
struct pipe_depth_stencil_alpha_state;
struct pipe_draw_info;
struct pipe_fence_handle;
struct pipe_framebuffer_state;
struct pipe_index_buffer;
struct pipe_query;
struct pipe_poly_stipple;
struct pipe_rasterizer_state;
struct pipe_resolve_info;
struct pipe_resource;
struct pipe_sampler_state;
struct pipe_sampler_view;
struct pipe_scissor_state;
struct pipe_shader_state;
struct pipe_stencil_ref;
struct pipe_stream_output_target;
struct pipe_surface;
struct pipe_transfer;
struct pipe_vertex_buffer;
struct pipe_vertex_element;
struct pipe_video_buffer;
struct pipe_video_codec;
struct pipe_viewport_state;
struct pipe_compute_state;
union pipe_color_union;
union pipe_query_result;
/**
* Gallium rendering context. Basically:
* - state setting functions
* - VBO drawing functions
* - surface functions
*/
struct pipe_context {
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_vbo)( struct pipe_context *pipe,
const struct pipe_draw_info *info );
/*@}*/
/**
* Predicate subsequent rendering on occlusion query result
* \param query the query predicate, or NULL if no predicate
* \param condition whether to skip on FALSE or TRUE query results
* \param mode one of PIPE_RENDER_COND_x
*/
void (*render_condition)( struct pipe_context *pipe,
struct pipe_query *query,
boolean condition,
uint mode );
/**
* Query objects
*/
/*@{*/
struct pipe_query *(*create_query)( struct pipe_context *pipe,
unsigned query_type,
unsigned index );
void (*destroy_query)(struct pipe_context *pipe,
struct pipe_query *q);
boolean (*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,
union pipe_query_result *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_sampler_states)(struct pipe_context *,
unsigned shader, unsigned start_slot,
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_tcs_state)(struct pipe_context *,
const struct pipe_shader_state *);
void (*bind_tcs_state)(struct pipe_context *, void *);
void (*delete_tcs_state)(struct pipe_context *, void *);
void * (*create_tes_state)(struct pipe_context *,
const struct pipe_shader_state *);
void (*bind_tes_state)(struct pipe_context *, void *);
void (*delete_tes_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 *);
/*@}*/
/**
* 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_min_samples)( struct pipe_context *,
unsigned min_samples );
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_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_states)( struct pipe_context *,
unsigned start_slot,
unsigned num_scissors,
const struct pipe_scissor_state * );
void (*set_viewport_states)( struct pipe_context *,
unsigned start_slot,
unsigned num_viewports,
const struct pipe_viewport_state *);
void (*set_sampler_views)(struct pipe_context *, unsigned shader,
unsigned start_slot, unsigned num_views,
struct pipe_sampler_view **);
void (*set_tess_state)(struct pipe_context *,
float default_outer_level[4],
float default_inner_level[2]);
/**
* Bind an array of shader resources that will be used by the
* graphics pipeline. Any resources that were previously bound to
* the specified range will be unbound after this call.
*
* \param start first resource to bind.
* \param count number of consecutive resources to bind.
* \param resources array of pointers to the resources to bind, it
* should contain at least \a count elements
* unless it's NULL, in which case no new
* resources will be bound.
*/
void (*set_shader_resources)(struct pipe_context *,
unsigned start, unsigned count,
struct pipe_surface **resources);
void (*set_vertex_buffers)( struct pipe_context *,
unsigned start_slot,
unsigned num_buffers,
const struct pipe_vertex_buffer * );
void (*set_index_buffer)( struct pipe_context *pipe,
const struct pipe_index_buffer * );
/*@}*/
/**
* Stream output functions.
*/
/*@{*/
struct pipe_stream_output_target *(*create_stream_output_target)(
struct pipe_context *,
struct pipe_resource *,
unsigned buffer_offset,
unsigned buffer_size);
void (*stream_output_target_destroy)(struct pipe_context *,
struct pipe_stream_output_target *);
void (*set_stream_output_targets)(struct pipe_context *,
unsigned num_targets,
struct pipe_stream_output_target **targets,
const unsigned *offsets);
/*@}*/
/**
* Resource functions for blit-like functionality
*
* If a driver supports multisampling, blit must implement color resolve.
*/
/*@{*/
/**
* 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,
unsigned dst_level,
unsigned dstx, unsigned dsty, unsigned dstz,
struct pipe_resource *src,
unsigned src_level,
const struct pipe_box *src_box);
/* Optimal hardware path for blitting pixels.
* Scaling, format conversion, up- and downsampling (resolve) are allowed.
*/
void (*blit)(struct pipe_context *pipe,
const struct pipe_blit_info *info);
/*@}*/
/**
* 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 color pointer to a union of fiu array 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 union pipe_color_union *color,
double depth,
unsigned stencil);
/**
* Clear a color rendertarget surface.
* \param color pointer to an union of fiu array for each of r, g, b, a.
*/
void (*clear_render_target)(struct pipe_context *pipe,
struct pipe_surface *dst,
const union pipe_color_union *color,
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);
/**
* Clear a buffer. Runs a memset over the specified region with the element
* value passed in through clear_value of size clear_value_size.
*/
void (*clear_buffer)(struct pipe_context *pipe,
struct pipe_resource *res,
unsigned offset,
unsigned size,
const void *clear_value,
int clear_value_size);
/** Flush draw commands
*
* \param flags bitfield of enum pipe_flush_flags values.
*/
void (*flush)(struct pipe_context *pipe,
struct pipe_fence_handle **fence,
unsigned flags);
/**
* 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 surface which is a "view" into a resource, used by
* render target / depth stencil stages.
*/
struct pipe_surface *(*create_surface)(struct pipe_context *ctx,
struct pipe_resource *resource,
const struct pipe_surface *templat);
void (*surface_destroy)(struct pipe_context *ctx,
struct pipe_surface *);
/**
* Map a resource.
*
* Transfers are (by default) context-private and allow uploads to be
* interleaved with rendering.
*
* out_transfer will contain the transfer object that must be passed
* to all the other transfer functions. It also contains useful
* information (like texture strides).
*/
void *(*transfer_map)(struct pipe_context *,
struct pipe_resource *resource,
unsigned level,
unsigned usage, /* a combination of PIPE_TRANSFER_x */
const struct pipe_box *,
struct pipe_transfer **out_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 *,
unsigned level,
unsigned usage, /* a combination of PIPE_TRANSFER_x */
const struct pipe_box *,
const void *data,
unsigned stride,
unsigned layer_stride);
/**
* Flush any pending framebuffer writes and invalidate texture caches.
*/
void (*texture_barrier)(struct pipe_context *);
/**
* Flush caches according to flags.
*/
void (*memory_barrier)(struct pipe_context *, unsigned flags);
/**
* Creates a video codec for a specific video format/profile
*/
struct pipe_video_codec *(*create_video_codec)( struct pipe_context *context,
const struct pipe_video_codec *templat );
/**
* Creates a video buffer as decoding target
*/
struct pipe_video_buffer *(*create_video_buffer)( struct pipe_context *context,
const struct pipe_video_buffer *templat );
/**
* Compute kernel execution
*/
/*@{*/
/**
* Define the compute program and parameters to be used by
* pipe_context::launch_grid.
*/
void *(*create_compute_state)(struct pipe_context *context,
const struct pipe_compute_state *);
void (*bind_compute_state)(struct pipe_context *, void *);
void (*delete_compute_state)(struct pipe_context *, void *);
/**
* Bind an array of shader resources that will be used by the
* compute program. Any resources that were previously bound to
* the specified range will be unbound after this call.
*
* \param start first resource to bind.
* \param count number of consecutive resources to bind.
* \param resources array of pointers to the resources to bind, it
* should contain at least \a count elements
* unless it's NULL, in which case no new
* resources will be bound.
*/
void (*set_compute_resources)(struct pipe_context *,
unsigned start, unsigned count,
struct pipe_surface **resources);
/**
* Bind an array of buffers to be mapped into the address space of
* the GLOBAL resource. Any buffers that were previously bound
* between [first, first + count - 1] are unbound after this call.
*
* \param first first buffer to map.
* \param count number of consecutive buffers to map.
* \param resources array of pointers to the buffers to map, it
* should contain at least \a count elements
* unless it's NULL, in which case no new
* resources will be bound.
* \param handles array of pointers to the memory locations that
* will be updated with the address each buffer
* will be mapped to. The base memory address of
* each of the buffers will be added to the value
* pointed to by its corresponding handle to form
* the final address argument. It should contain
* at least \a count elements, unless \a
* resources is NULL in which case \a handles
* should be NULL as well.
*
* Note that the driver isn't required to make any guarantees about
* the contents of the \a handles array being valid anytime except
* during the subsequent calls to pipe_context::launch_grid. This
* means that the only sensible location handles[i] may point to is
* somewhere within the INPUT buffer itself. This is so to
* accommodate implementations that lack virtual memory but
* nevertheless migrate buffers on the fly, leading to resource
* base addresses that change on each kernel invocation or are
* unknown to the pipe driver.
*/
void (*set_global_binding)(struct pipe_context *context,
unsigned first, unsigned count,
struct pipe_resource **resources,
uint32_t **handles);
/**
* Launch the compute kernel starting from instruction \a pc of the
* currently bound compute program.
*
* \a grid_layout and \a block_layout are arrays of size \a
* PIPE_COMPUTE_CAP_GRID_DIMENSION that determine the layout of the
* grid (in block units) and working block (in thread units) to be
* used, respectively.
*
* \a pc For drivers that use PIPE_SHADER_IR_LLVM as their prefered IR,
* this value will be the index of the kernel in the opencl.kernels
* metadata list.
*
* \a input will be used to initialize the INPUT resource, and it
* should point to a buffer of at least
* pipe_compute_state::req_input_mem bytes.
*/
void (*launch_grid)(struct pipe_context *context,
const uint *block_layout, const uint *grid_layout,
uint32_t pc, const void *input);
/*@}*/
/**
* Get sample position for an individual sample point.
*
* \param sample_count - total number of samples
* \param sample_index - sample to get the position values for
* \param out_value - return value of 2 floats for x and y position for
* requested sample.
*/
void (*get_sample_position)(struct pipe_context *context,
unsigned sample_count,
unsigned sample_index,
float *out_value);
/**
* Flush the resource cache, so that the resource can be used
* by an external client. Possible usage:
* - flushing a resource before presenting it on the screen
* - flushing a resource if some other process or device wants to use it
* This shouldn't be used to flush caches if the resource is only managed
* by a single pipe_screen and is not shared with another process.
* (i.e. you shouldn't use it to flush caches explicitly if you want to e.g.
* use the resource for texturing)
*/
void (*flush_resource)(struct pipe_context *ctx,
struct pipe_resource *resource);
/**
* Invalidate the contents of the resource.
*
* This is used to implement EGL's semantic of undefined depth/stencil
* contenst after a swapbuffers. This allows a tiled renderer (for
* example) to not store the depth buffer.
*/
void (*invalidate_resource)(struct pipe_context *ctx,
struct pipe_resource *resource);
/**
* Return information about unexpected device resets.
*/
enum pipe_reset_status (*get_device_reset_status)(struct pipe_context *ctx);
};
#ifdef __cplusplus
}
#endif
#endif /* PIPE_CONTEXT_H */