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Regard whitespace Rev 4357 → Rev 4358

/contrib/sdk/sources/Mesa/src/gallium/drivers/identity/id_context.c
0,0 → 1,943
/**************************************************************************
*
* Copyright 2009 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.
*
**************************************************************************/
 
 
#include "pipe/p_context.h"
#include "util/u_memory.h"
#include "util/u_inlines.h"
 
#include "id_context.h"
#include "id_objects.h"
 
 
static void
identity_destroy(struct pipe_context *_pipe)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->destroy(pipe);
 
FREE(id_pipe);
}
 
static void
identity_draw_vbo(struct pipe_context *_pipe,
const struct pipe_draw_info *info)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->draw_vbo(pipe, info);
}
 
static struct pipe_query *
identity_create_query(struct pipe_context *_pipe,
unsigned query_type)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
return pipe->create_query(pipe,
query_type);
}
 
static void
identity_destroy_query(struct pipe_context *_pipe,
struct pipe_query *query)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->destroy_query(pipe,
query);
}
 
static void
identity_begin_query(struct pipe_context *_pipe,
struct pipe_query *query)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->begin_query(pipe,
query);
}
 
static void
identity_end_query(struct pipe_context *_pipe,
struct pipe_query *query)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->end_query(pipe,
query);
}
 
static boolean
identity_get_query_result(struct pipe_context *_pipe,
struct pipe_query *query,
boolean wait,
union pipe_query_result *result)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
return pipe->get_query_result(pipe,
query,
wait,
result);
}
 
static void *
identity_create_blend_state(struct pipe_context *_pipe,
const struct pipe_blend_state *blend)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
return pipe->create_blend_state(pipe,
blend);
}
 
static void
identity_bind_blend_state(struct pipe_context *_pipe,
void *blend)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->bind_blend_state(pipe,
blend);
}
 
static void
identity_delete_blend_state(struct pipe_context *_pipe,
void *blend)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->delete_blend_state(pipe,
blend);
}
 
static void *
identity_create_sampler_state(struct pipe_context *_pipe,
const struct pipe_sampler_state *sampler)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
return pipe->create_sampler_state(pipe,
sampler);
}
 
static void
identity_bind_sampler_states(struct pipe_context *_pipe,
unsigned shader,
unsigned start,
unsigned num_samplers,
void **samplers)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
/* remove this when we have pipe->bind_sampler_states(..., start, ...) */
assert(start == 0);
 
switch (shader) {
case PIPE_SHADER_VERTEX:
pipe->bind_vertex_sampler_states(pipe, num_samplers, samplers);
break;
case PIPE_SHADER_GEOMETRY:
pipe->bind_geometry_sampler_states(pipe, num_samplers, samplers);
break;
case PIPE_SHADER_FRAGMENT:
pipe->bind_fragment_sampler_states(pipe, num_samplers, samplers);
break;
default:
debug_error("Unexpected shader in identity_bind_sampler_states()");
}
}
 
static void
identity_bind_fragment_sampler_states(struct pipe_context *_pipe,
unsigned num_samplers,
void **samplers)
{
identity_bind_sampler_states(_pipe, PIPE_SHADER_FRAGMENT,
0, num_samplers, samplers);
}
 
static void
identity_bind_vertex_sampler_states(struct pipe_context *_pipe,
unsigned num_samplers,
void **samplers)
{
identity_bind_sampler_states(_pipe, PIPE_SHADER_VERTEX,
0, num_samplers, samplers);
}
 
static void
identity_delete_sampler_state(struct pipe_context *_pipe,
void *sampler)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->delete_sampler_state(pipe,
sampler);
}
 
static void *
identity_create_rasterizer_state(struct pipe_context *_pipe,
const struct pipe_rasterizer_state *rasterizer)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
return pipe->create_rasterizer_state(pipe,
rasterizer);
}
 
static void
identity_bind_rasterizer_state(struct pipe_context *_pipe,
void *rasterizer)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->bind_rasterizer_state(pipe,
rasterizer);
}
 
static void
identity_delete_rasterizer_state(struct pipe_context *_pipe,
void *rasterizer)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->delete_rasterizer_state(pipe,
rasterizer);
}
 
static void *
identity_create_depth_stencil_alpha_state(struct pipe_context *_pipe,
const struct pipe_depth_stencil_alpha_state *depth_stencil_alpha)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
return pipe->create_depth_stencil_alpha_state(pipe,
depth_stencil_alpha);
}
 
static void
identity_bind_depth_stencil_alpha_state(struct pipe_context *_pipe,
void *depth_stencil_alpha)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->bind_depth_stencil_alpha_state(pipe,
depth_stencil_alpha);
}
 
static void
identity_delete_depth_stencil_alpha_state(struct pipe_context *_pipe,
void *depth_stencil_alpha)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->delete_depth_stencil_alpha_state(pipe,
depth_stencil_alpha);
}
 
static void *
identity_create_fs_state(struct pipe_context *_pipe,
const struct pipe_shader_state *fs)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
return pipe->create_fs_state(pipe,
fs);
}
 
static void
identity_bind_fs_state(struct pipe_context *_pipe,
void *fs)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->bind_fs_state(pipe,
fs);
}
 
static void
identity_delete_fs_state(struct pipe_context *_pipe,
void *fs)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->delete_fs_state(pipe,
fs);
}
 
static void *
identity_create_vs_state(struct pipe_context *_pipe,
const struct pipe_shader_state *vs)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
return pipe->create_vs_state(pipe,
vs);
}
 
static void
identity_bind_vs_state(struct pipe_context *_pipe,
void *vs)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->bind_vs_state(pipe,
vs);
}
 
static void
identity_delete_vs_state(struct pipe_context *_pipe,
void *vs)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->delete_vs_state(pipe,
vs);
}
 
 
static void *
identity_create_vertex_elements_state(struct pipe_context *_pipe,
unsigned num_elements,
const struct pipe_vertex_element *vertex_elements)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
return pipe->create_vertex_elements_state(pipe,
num_elements,
vertex_elements);
}
 
static void
identity_bind_vertex_elements_state(struct pipe_context *_pipe,
void *velems)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->bind_vertex_elements_state(pipe,
velems);
}
 
static void
identity_delete_vertex_elements_state(struct pipe_context *_pipe,
void *velems)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->delete_vertex_elements_state(pipe,
velems);
}
 
static void
identity_set_blend_color(struct pipe_context *_pipe,
const struct pipe_blend_color *blend_color)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->set_blend_color(pipe,
blend_color);
}
 
static void
identity_set_stencil_ref(struct pipe_context *_pipe,
const struct pipe_stencil_ref *stencil_ref)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->set_stencil_ref(pipe,
stencil_ref);
}
 
static void
identity_set_clip_state(struct pipe_context *_pipe,
const struct pipe_clip_state *clip)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->set_clip_state(pipe,
clip);
}
 
static void
identity_set_sample_mask(struct pipe_context *_pipe,
unsigned sample_mask)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->set_sample_mask(pipe,
sample_mask);
}
 
static void
identity_set_constant_buffer(struct pipe_context *_pipe,
uint shader,
uint index,
struct pipe_constant_buffer *_cb)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
struct pipe_constant_buffer cb;
 
/* XXX hmm? unwrap the input state */
if (_cb) {
cb = *_cb;
cb.buffer = identity_resource_unwrap(_cb->buffer);
}
 
pipe->set_constant_buffer(pipe,
shader,
index,
_cb ? &cb : NULL);
}
 
static void
identity_set_framebuffer_state(struct pipe_context *_pipe,
const struct pipe_framebuffer_state *_state)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
struct pipe_framebuffer_state unwrapped_state;
struct pipe_framebuffer_state *state = NULL;
unsigned i;
 
/* unwrap the input state */
if (_state) {
memcpy(&unwrapped_state, _state, sizeof(unwrapped_state));
for(i = 0; i < _state->nr_cbufs; i++)
unwrapped_state.cbufs[i] = identity_surface_unwrap(_state->cbufs[i]);
for (; i < PIPE_MAX_COLOR_BUFS; i++)
unwrapped_state.cbufs[i] = NULL;
unwrapped_state.zsbuf = identity_surface_unwrap(_state->zsbuf);
state = &unwrapped_state;
}
 
pipe->set_framebuffer_state(pipe,
state);
}
 
static void
identity_set_polygon_stipple(struct pipe_context *_pipe,
const struct pipe_poly_stipple *poly_stipple)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->set_polygon_stipple(pipe,
poly_stipple);
}
 
static void
identity_set_scissor_states(struct pipe_context *_pipe,
unsigned start_slot,
unsigned num_scissors,
const struct pipe_scissor_state *scissor)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->set_scissor_states(pipe, start_slot, num_scissors, scissor);
}
 
static void
identity_set_viewport_states(struct pipe_context *_pipe,
unsigned start_slot,
unsigned num_viewports,
const struct pipe_viewport_state *viewport)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->set_viewport_states(pipe, start_slot, num_viewports, viewport);
}
 
static void
identity_set_sampler_views(struct pipe_context *_pipe,
unsigned shader,
unsigned start,
unsigned num,
struct pipe_sampler_view **_views)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
struct pipe_sampler_view *unwrapped_views[PIPE_MAX_SAMPLERS];
struct pipe_sampler_view **views = NULL;
unsigned i;
 
/* remove this when we have pipe->set_sampler_views(..., start, ...) */
assert(start == 0);
 
if (_views) {
for (i = 0; i < num; i++)
unwrapped_views[i] = identity_sampler_view_unwrap(_views[i]);
for (; i < PIPE_MAX_SAMPLERS; i++)
unwrapped_views[i] = NULL;
 
views = unwrapped_views;
}
 
switch (shader) {
case PIPE_SHADER_VERTEX:
pipe->set_vertex_sampler_views(pipe, num, views);
break;
case PIPE_SHADER_GEOMETRY:
pipe->set_geometry_sampler_views(pipe, num, views);
break;
case PIPE_SHADER_FRAGMENT:
pipe->set_fragment_sampler_views(pipe, num, views);
break;
default:
debug_error("Unexpected shader in identity_set_sampler_views()");
}
}
 
static void
identity_set_fragment_sampler_views(struct pipe_context *_pipe,
unsigned num,
struct pipe_sampler_view **_views)
{
identity_set_sampler_views(_pipe, PIPE_SHADER_FRAGMENT, 0, num, _views);
}
 
static void
identity_set_vertex_sampler_views(struct pipe_context *_pipe,
unsigned num,
struct pipe_sampler_view **_views)
{
identity_set_sampler_views(_pipe, PIPE_SHADER_VERTEX, 0, num, _views);
}
 
static void
identity_set_vertex_buffers(struct pipe_context *_pipe,
unsigned start_slot, unsigned num_buffers,
const struct pipe_vertex_buffer *_buffers)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
struct pipe_vertex_buffer unwrapped_buffers[PIPE_MAX_SHADER_INPUTS];
struct pipe_vertex_buffer *buffers = NULL;
unsigned i;
 
if (num_buffers) {
memcpy(unwrapped_buffers, _buffers, num_buffers * sizeof(*_buffers));
for (i = 0; i < num_buffers; i++)
unwrapped_buffers[i].buffer = identity_resource_unwrap(_buffers[i].buffer);
buffers = unwrapped_buffers;
}
 
pipe->set_vertex_buffers(pipe,
start_slot, num_buffers,
buffers);
}
 
static void
identity_set_index_buffer(struct pipe_context *_pipe,
const struct pipe_index_buffer *_ib)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
struct pipe_index_buffer unwrapped_ib, *ib = NULL;
 
if (_ib) {
unwrapped_ib = *_ib;
unwrapped_ib.buffer = identity_resource_unwrap(_ib->buffer);
ib = &unwrapped_ib;
}
 
pipe->set_index_buffer(pipe, ib);
}
 
static void
identity_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)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct identity_resource *id_resource_dst = identity_resource(_dst);
struct identity_resource *id_resource_src = identity_resource(_src);
struct pipe_context *pipe = id_pipe->pipe;
struct pipe_resource *dst = id_resource_dst->resource;
struct pipe_resource *src = id_resource_src->resource;
 
pipe->resource_copy_region(pipe,
dst,
dst_level,
dstx,
dsty,
dstz,
src,
src_level,
src_box);
}
 
static void
identity_blit(struct pipe_context *_pipe,
const struct pipe_blit_info *info)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
struct pipe_blit_info blit = *info;
 
blit.src.resource = identity_resource(blit.src.resource)->resource;
blit.dst.resource = identity_resource(blit.dst.resource)->resource;
 
pipe->blit(pipe, &blit);
}
 
static void
identity_clear(struct pipe_context *_pipe,
unsigned buffers,
const union pipe_color_union *color,
double depth,
unsigned stencil)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->clear(pipe,
buffers,
color,
depth,
stencil);
}
 
static void
identity_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)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct identity_surface *id_surface_dst = identity_surface(_dst);
struct pipe_context *pipe = id_pipe->pipe;
struct pipe_surface *dst = id_surface_dst->surface;
 
pipe->clear_render_target(pipe,
dst,
color,
dstx,
dsty,
width,
height);
}
static void
identity_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)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct identity_surface *id_surface_dst = identity_surface(_dst);
struct pipe_context *pipe = id_pipe->pipe;
struct pipe_surface *dst = id_surface_dst->surface;
 
pipe->clear_depth_stencil(pipe,
dst,
clear_flags,
depth,
stencil,
dstx,
dsty,
width,
height);
 
}
 
static void
identity_flush(struct pipe_context *_pipe,
struct pipe_fence_handle **fence,
unsigned flags)
{
struct identity_context *id_pipe = identity_context(_pipe);
struct pipe_context *pipe = id_pipe->pipe;
 
pipe->flush(pipe, fence, flags);
}
 
static struct pipe_sampler_view *
identity_context_create_sampler_view(struct pipe_context *_pipe,
struct pipe_resource *_resource,
const struct pipe_sampler_view *templ)
{
struct identity_context *id_context = identity_context(_pipe);
struct identity_resource *id_resource = identity_resource(_resource);
struct pipe_context *pipe = id_context->pipe;
struct pipe_resource *resource = id_resource->resource;
struct pipe_sampler_view *result;
 
result = pipe->create_sampler_view(pipe,
resource,
templ);
 
if (result)
return identity_sampler_view_create(id_context, id_resource, result);
return NULL;
}
 
static void
identity_context_sampler_view_destroy(struct pipe_context *_pipe,
struct pipe_sampler_view *_view)
{
identity_sampler_view_destroy(identity_context(_pipe),
identity_sampler_view(_view));
}
 
static struct pipe_surface *
identity_context_create_surface(struct pipe_context *_pipe,
struct pipe_resource *_resource,
const struct pipe_surface *templ)
{
struct identity_context *id_context = identity_context(_pipe);
struct identity_resource *id_resource = identity_resource(_resource);
struct pipe_context *pipe = id_context->pipe;
struct pipe_resource *resource = id_resource->resource;
struct pipe_surface *result;
 
result = pipe->create_surface(pipe,
resource,
templ);
 
if (result)
return identity_surface_create(id_context, id_resource, result);
return NULL;
}
 
static void
identity_context_surface_destroy(struct pipe_context *_pipe,
struct pipe_surface *_surf)
{
identity_surface_destroy(identity_context(_pipe),
identity_surface(_surf));
}
 
static void *
identity_context_transfer_map(struct pipe_context *_context,
struct pipe_resource *_resource,
unsigned level,
unsigned usage,
const struct pipe_box *box,
struct pipe_transfer **transfer)
{
struct identity_context *id_context = identity_context(_context);
struct identity_resource *id_resource = identity_resource(_resource);
struct pipe_context *context = id_context->pipe;
struct pipe_resource *resource = id_resource->resource;
struct pipe_transfer *result;
void *map;
 
map = context->transfer_map(context,
resource,
level,
usage,
box, &result);
 
if (!map)
return NULL;
 
*transfer = identity_transfer_map(id_context, id_resource, result);
return *transfer ? map : NULL;
}
 
static void
identity_context_transfer_flush_region(struct pipe_context *_context,
struct pipe_transfer *_transfer,
const struct pipe_box *box)
{
struct identity_context *id_context = identity_context(_context);
struct identity_transfer *id_transfer = identity_transfer(_transfer);
struct pipe_context *context = id_context->pipe;
struct pipe_transfer *transfer = id_transfer->transfer;
 
context->transfer_flush_region(context,
transfer,
box);
}
 
 
static void
identity_context_transfer_unmap(struct pipe_context *_context,
struct pipe_transfer *_transfer)
{
struct identity_context *id_context = identity_context(_context);
struct identity_transfer *id_transfer = identity_transfer(_transfer);
struct pipe_context *context = id_context->pipe;
struct pipe_transfer *transfer = id_transfer->transfer;
 
context->transfer_unmap(context,
transfer);
 
identity_transfer_destroy(identity_context(_context),
identity_transfer(_transfer));
}
 
 
static void
identity_context_transfer_inline_write(struct pipe_context *_context,
struct pipe_resource *_resource,
unsigned level,
unsigned usage,
const struct pipe_box *box,
const void *data,
unsigned stride,
unsigned layer_stride)
{
struct identity_context *id_context = identity_context(_context);
struct identity_resource *id_resource = identity_resource(_resource);
struct pipe_context *context = id_context->pipe;
struct pipe_resource *resource = id_resource->resource;
 
context->transfer_inline_write(context,
resource,
level,
usage,
box,
data,
stride,
layer_stride);
}
 
 
struct pipe_context *
identity_context_create(struct pipe_screen *_screen, struct pipe_context *pipe)
{
struct identity_context *id_pipe;
(void)identity_screen(_screen);
 
id_pipe = CALLOC_STRUCT(identity_context);
if (!id_pipe) {
return NULL;
}
 
id_pipe->base.screen = _screen;
id_pipe->base.priv = pipe->priv; /* expose wrapped data */
id_pipe->base.draw = NULL;
 
id_pipe->base.destroy = identity_destroy;
id_pipe->base.draw_vbo = identity_draw_vbo;
id_pipe->base.create_query = identity_create_query;
id_pipe->base.destroy_query = identity_destroy_query;
id_pipe->base.begin_query = identity_begin_query;
id_pipe->base.end_query = identity_end_query;
id_pipe->base.get_query_result = identity_get_query_result;
id_pipe->base.create_blend_state = identity_create_blend_state;
id_pipe->base.bind_blend_state = identity_bind_blend_state;
id_pipe->base.delete_blend_state = identity_delete_blend_state;
id_pipe->base.create_sampler_state = identity_create_sampler_state;
id_pipe->base.bind_fragment_sampler_states = identity_bind_fragment_sampler_states;
id_pipe->base.bind_vertex_sampler_states = identity_bind_vertex_sampler_states;
id_pipe->base.delete_sampler_state = identity_delete_sampler_state;
id_pipe->base.create_rasterizer_state = identity_create_rasterizer_state;
id_pipe->base.bind_rasterizer_state = identity_bind_rasterizer_state;
id_pipe->base.delete_rasterizer_state = identity_delete_rasterizer_state;
id_pipe->base.create_depth_stencil_alpha_state = identity_create_depth_stencil_alpha_state;
id_pipe->base.bind_depth_stencil_alpha_state = identity_bind_depth_stencil_alpha_state;
id_pipe->base.delete_depth_stencil_alpha_state = identity_delete_depth_stencil_alpha_state;
id_pipe->base.create_fs_state = identity_create_fs_state;
id_pipe->base.bind_fs_state = identity_bind_fs_state;
id_pipe->base.delete_fs_state = identity_delete_fs_state;
id_pipe->base.create_vs_state = identity_create_vs_state;
id_pipe->base.bind_vs_state = identity_bind_vs_state;
id_pipe->base.delete_vs_state = identity_delete_vs_state;
id_pipe->base.create_vertex_elements_state = identity_create_vertex_elements_state;
id_pipe->base.bind_vertex_elements_state = identity_bind_vertex_elements_state;
id_pipe->base.delete_vertex_elements_state = identity_delete_vertex_elements_state;
id_pipe->base.set_blend_color = identity_set_blend_color;
id_pipe->base.set_stencil_ref = identity_set_stencil_ref;
id_pipe->base.set_clip_state = identity_set_clip_state;
id_pipe->base.set_sample_mask = identity_set_sample_mask;
id_pipe->base.set_constant_buffer = identity_set_constant_buffer;
id_pipe->base.set_framebuffer_state = identity_set_framebuffer_state;
id_pipe->base.set_polygon_stipple = identity_set_polygon_stipple;
id_pipe->base.set_scissor_states = identity_set_scissor_states;
id_pipe->base.set_viewport_states = identity_set_viewport_states;
id_pipe->base.set_fragment_sampler_views = identity_set_fragment_sampler_views;
id_pipe->base.set_vertex_sampler_views = identity_set_vertex_sampler_views;
id_pipe->base.set_vertex_buffers = identity_set_vertex_buffers;
id_pipe->base.set_index_buffer = identity_set_index_buffer;
id_pipe->base.resource_copy_region = identity_resource_copy_region;
id_pipe->base.clear = identity_clear;
id_pipe->base.clear_render_target = identity_clear_render_target;
id_pipe->base.clear_depth_stencil = identity_clear_depth_stencil;
id_pipe->base.flush = identity_flush;
id_pipe->base.create_surface = identity_context_create_surface;
id_pipe->base.surface_destroy = identity_context_surface_destroy;
id_pipe->base.create_sampler_view = identity_context_create_sampler_view;
id_pipe->base.sampler_view_destroy = identity_context_sampler_view_destroy;
id_pipe->base.transfer_map = identity_context_transfer_map;
id_pipe->base.transfer_unmap = identity_context_transfer_unmap;
id_pipe->base.transfer_flush_region = identity_context_transfer_flush_region;
id_pipe->base.transfer_inline_write = identity_context_transfer_inline_write;
id_pipe->base.blit = identity_blit;
 
id_pipe->pipe = pipe;
 
return &id_pipe->base;
}