static struct pipe_resource *
softpipe_resource_from_handle(struct pipe_screen *screen,
const struct pipe_resource *templat,
struct winsys_handle *whandle)
{
struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
struct softpipe_resource *spr = CALLOC_STRUCT(softpipe_resource);
if (!spr)
return NULL;
spr->base = *templat;
pipe_reference_init(&spr->base.reference, 1);
spr->base.screen = screen;
spr->pot = (util_is_power_of_two(templat->width0) &&
util_is_power_of_two(templat->height0) &&
util_is_power_of_two(templat->depth0));
spr->dt = winsys->displaytarget_from_handle(winsys,
templat,
whandle,
&spr->stride[0]);
if (!spr->dt)
goto fail;
return &spr->base;
fail:
FREE(spr);
return NULL;
}
static int
softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
{
struct softpipe_screen *sp_screen = softpipe_screen(screen);
switch(shader)
{
case PIPE_SHADER_FRAGMENT:
return tgsi_exec_get_shader_param(param);
case PIPE_SHADER_VERTEX:
case PIPE_SHADER_GEOMETRY:
switch (param) {
case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
if (sp_screen->use_llvm)
/* Softpipe doesn't yet know how to tell draw/llvm about textures */
return 0;
else
return PIPE_MAX_SAMPLERS;
default:
if (sp_screen->use_llvm)
return draw_get_shader_param(shader, param);
else
return draw_get_shader_param_no_llvm(shader, param);
}
default:
return 0;
}
}
static void
gdi_present(struct pipe_screen *screen,
struct pipe_resource *res,
HDC hDC)
{
/* This will fail if any interposing layer (trace, debug, etc) has
* been introduced between the state-trackers and the pipe driver.
*
* Ideally this would get replaced with a call to
* pipe_screen::flush_frontbuffer().
*
* Failing that, it may be necessary for intervening layers to wrap
* other structs such as this stw_winsys as well...
*/
struct sw_winsys *winsys = NULL;
struct sw_displaytarget *dt = NULL;
#ifdef HAVE_LLVMPIPE
if (use_llvmpipe) {
winsys = llvmpipe_screen(screen)->winsys;
dt = llvmpipe_resource(res)->dt;
gdi_sw_display(winsys, dt, hDC);
return;
}
#endif
winsys = softpipe_screen(screen)->winsys,
dt = softpipe_resource(res)->dt,
gdi_sw_display(winsys, dt, hDC);
}
static int
softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
{
#ifdef HAVE_LLVM
struct softpipe_screen *sp_screen = softpipe_screen(screen);
#endif
switch(shader)
{
case PIPE_SHADER_FRAGMENT:
return tgsi_exec_get_shader_param(param);
case PIPE_SHADER_VERTEX:
case PIPE_SHADER_GEOMETRY:
switch (param) {
case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
#ifdef HAVE_LLVM
if (sp_screen->use_llvm)
/* Softpipe doesn't yet know how to tell draw/llvm about textures */
return 0;
#endif
return PIPE_MAX_VERTEX_SAMPLERS;
case PIPE_SHADER_CAP_INTEGERS:
#ifdef HAVE_LLVM /* gallivm doesn't support integers yet */
if (sp_screen->use_llvm)
return 0;
#endif
/* fallthrough */
default:
return draw_get_shader_param(shader, param);
}
default:
return 0;
}
}
static void *
softpipe_surface_map( struct pipe_screen *screen,
struct pipe_surface *surface,
unsigned flags )
{
ubyte *map;
if (flags & ~surface->usage) {
assert(0);
return NULL;
}
map = pipe_buffer_map( screen, surface->buffer, flags );
if (map == NULL)
return NULL;
/* May want to different things here depending on read/write nature
* of the map:
*/
if (surface->texture &&
(flags & PIPE_BUFFER_USAGE_CPU_WRITE))
{
/* Do something to notify sharing contexts of a texture change.
* In softpipe, that would mean flushing the texture cache.
*/
softpipe_screen(screen)->timestamp++;
}
return map + surface->offset;
}
/* Hopefully this will remain quite simple, otherwise need to pull in
* something like the state tracker mechanism.
*/
void
softpipe_update_derived(struct softpipe_context *softpipe, unsigned prim)
{
struct softpipe_screen *sp_screen = softpipe_screen(softpipe->pipe.screen);
/* Check for updated textures.
*/
if (softpipe->tex_timestamp != sp_screen->timestamp) {
softpipe->tex_timestamp = sp_screen->timestamp;
softpipe->dirty |= SP_NEW_TEXTURE;
}
#if DO_PSTIPPLE_IN_HELPER_MODULE
if (softpipe->dirty & SP_NEW_STIPPLE)
/* before updating samplers! */
update_polygon_stipple_pattern(softpipe);
#endif
if (softpipe->dirty & (SP_NEW_RASTERIZER |
SP_NEW_FS))
update_fragment_shader(softpipe, prim);
#if DO_PSTIPPLE_IN_HELPER_MODULE
if (softpipe->dirty & (SP_NEW_RASTERIZER |
SP_NEW_STIPPLE |
SP_NEW_FS))
update_polygon_stipple_enable(softpipe, prim);
#endif
/* TODO: this looks suboptimal */
if (softpipe->dirty & (SP_NEW_SAMPLER |
SP_NEW_TEXTURE |
SP_NEW_FS |
SP_NEW_VS))
update_tgsi_samplers( softpipe );
if (softpipe->dirty & (SP_NEW_RASTERIZER |
SP_NEW_FS |
SP_NEW_VS))
invalidate_vertex_layout( softpipe );
if (softpipe->dirty & (SP_NEW_SCISSOR |
SP_NEW_RASTERIZER |
SP_NEW_FRAMEBUFFER))
compute_cliprect(softpipe);
if (softpipe->dirty & (SP_NEW_BLEND |
SP_NEW_DEPTH_STENCIL_ALPHA |
SP_NEW_FRAMEBUFFER |
SP_NEW_STIPPLE |
SP_NEW_FS))
sp_build_quad_pipeline(softpipe);
softpipe->dirty = 0;
}
static void
softpipe_destroy_screen( struct pipe_screen *screen )
{
struct softpipe_screen *sp_screen = softpipe_screen(screen);
struct sw_winsys *winsys = sp_screen->winsys;
if(winsys->destroy)
winsys->destroy(winsys);
FREE(screen);
}
/* This is often overriden by the co-state tracker.
*/
static void
softpipe_flush_frontbuffer(struct pipe_screen *_screen,
struct pipe_resource *resource,
unsigned level, unsigned layer,
void *context_private)
{
struct softpipe_screen *screen = softpipe_screen(_screen);
struct sw_winsys *winsys = screen->winsys;
struct softpipe_resource *texture = softpipe_resource(resource);
assert(texture->dt);
if (texture->dt)
winsys->displaytarget_display(winsys, texture->dt, context_private);
}
static boolean
softpipe_resource_get_handle(struct pipe_screen *screen,
struct pipe_resource *pt,
struct winsys_handle *whandle)
{
struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
struct softpipe_resource *spr = softpipe_resource(pt);
assert(spr->dt);
if (!spr->dt)
return FALSE;
return winsys->displaytarget_get_handle(winsys, spr->dt, whandle);
}
/**
* Texture layout for simple color buffers.
*/
static boolean
softpipe_displaytarget_layout(struct pipe_screen *screen,
struct softpipe_resource *spr)
{
struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
/* Round up the surface size to a multiple of the tile size?
*/
spr->dt = winsys->displaytarget_create(winsys,
spr->base.bind,
spr->base.format,
spr->base.width0,
spr->base.height0,
16,
&spr->stride[0] );
return spr->dt != NULL;
}
static int
softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe_shader_cap param)
{
struct softpipe_screen *sp_screen = softpipe_screen(screen);
switch(shader)
{
case PIPE_SHADER_FRAGMENT:
return tgsi_exec_get_shader_param(param);
case PIPE_SHADER_VERTEX:
case PIPE_SHADER_GEOMETRY:
if (sp_screen->use_llvm)
return draw_get_shader_param(shader, param);
else
return draw_get_shader_param_no_llvm(shader, param);
default:
return 0;
}
}
static void
gdi_softpipe_present(struct pipe_screen *screen,
struct pipe_surface *surface,
HDC hDC)
{
/* This will fail if any interposing layer (trace, debug, etc) has
* been introduced between the state-trackers and softpipe.
*
* Ideally this would get replaced with a call to
* pipe_screen::flush_frontbuffer().
*
* Failing that, it may be necessary for intervening layers to wrap
* other structs such as this stw_winsys as well...
*/
gdi_sw_display(softpipe_screen(screen)->winsys,
softpipe_resource(surface->texture)->dt,
hDC);
}
static void
softpipe_resource_destroy(struct pipe_screen *pscreen,
struct pipe_resource *pt)
{
struct softpipe_screen *screen = softpipe_screen(pscreen);
struct softpipe_resource *spr = softpipe_resource(pt);
if (spr->dt) {
/* display target */
struct sw_winsys *winsys = screen->winsys;
winsys->displaytarget_destroy(winsys, spr->dt);
}
else if (!spr->userBuffer) {
/* regular texture */
align_free(spr->data);
}
FREE(spr);
}
/**
* Unmap memory mapping for given pipe_transfer object.
*/
static void
softpipe_transfer_unmap(struct pipe_context *pipe,
struct pipe_transfer *transfer)
{
struct softpipe_resource *spr;
assert(transfer->resource);
spr = softpipe_resource(transfer->resource);
if (spr->dt) {
/* display target */
struct sw_winsys *winsys = softpipe_screen(pipe->screen)->winsys;
winsys->displaytarget_unmap(winsys, spr->dt);
}
if (transfer->usage & PIPE_TRANSFER_WRITE) {
/* Mark the texture as dirty to expire the tile caches. */
spr->timestamp++;
}
}
static void *
softpipe_transfer_map( struct pipe_screen *screen,
struct pipe_transfer *transfer )
{
ubyte *map, *xfer_map;
struct softpipe_texture *spt;
unsigned flags = 0;
assert(transfer->texture);
spt = softpipe_texture(transfer->texture);
if (transfer->usage != PIPE_TRANSFER_READ) {
flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
}
if (transfer->usage != PIPE_TRANSFER_WRITE) {
flags |= PIPE_BUFFER_USAGE_CPU_READ;
}
map = pipe_buffer_map(screen, spt->buffer, flags);
if (map == NULL)
return NULL;
/* May want to different things here depending on read/write nature
* of the map:
*/
if (transfer->texture && transfer->usage != PIPE_TRANSFER_READ)
{
/* Do something to notify sharing contexts of a texture change.
* In softpipe, that would mean flushing the texture cache.
*/
softpipe_screen(screen)->timestamp++;
}
xfer_map = map + softpipe_transfer(transfer)->offset +
transfer->y / transfer->block.height * transfer->stride +
transfer->x / transfer->block.width * transfer->block.size;
/*printf("map = %p xfer map = %p\n", map, xfer_map);*/
return xfer_map;
}
/**
* Create memory mapping for given pipe_transfer object.
*/
static void *
softpipe_transfer_map(struct pipe_context *pipe,
struct pipe_transfer *transfer)
{
struct softpipe_transfer *spt = softpipe_transfer(transfer);
struct softpipe_resource *spr = softpipe_resource(transfer->resource);
struct sw_winsys *winsys = softpipe_screen(pipe->screen)->winsys;
uint8_t *map;
/* resources backed by display target treated specially:
*/
if (spr->dt) {
map = winsys->displaytarget_map(winsys, spr->dt, transfer->usage);
}
else {
map = spr->data;
}
if (map == NULL)
return NULL;
else
return map + spt->offset;
}
struct pipe_context *
softpipe_create_context( struct pipe_screen *screen,
void *priv )
{
struct softpipe_screen *sp_screen = softpipe_screen(screen);
struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
uint i, sh;
util_init_math();
softpipe->dump_fs = debug_get_bool_option( "SOFTPIPE_DUMP_FS", FALSE );
softpipe->dump_gs = debug_get_bool_option( "SOFTPIPE_DUMP_GS", FALSE );
softpipe->pipe.screen = screen;
softpipe->pipe.destroy = softpipe_destroy;
softpipe->pipe.priv = priv;
/* state setters */
softpipe_init_blend_funcs(&softpipe->pipe);
softpipe_init_clip_funcs(&softpipe->pipe);
softpipe_init_query_funcs( softpipe );
softpipe_init_rasterizer_funcs(&softpipe->pipe);
softpipe_init_sampler_funcs(&softpipe->pipe);
softpipe_init_shader_funcs(&softpipe->pipe);
softpipe_init_streamout_funcs(&softpipe->pipe);
softpipe_init_texture_funcs( &softpipe->pipe );
softpipe_init_vertex_funcs(&softpipe->pipe);
softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
softpipe->pipe.draw_vbo = softpipe_draw_vbo;
softpipe->pipe.clear = softpipe_clear;
softpipe->pipe.flush = softpipe_flush_wrapped;
softpipe->pipe.render_condition = softpipe_render_condition;
softpipe->pipe.create_video_decoder = vl_create_decoder;
softpipe->pipe.create_video_buffer = vl_video_buffer_create;
/*
* Alloc caches for accessing drawing surfaces and textures.
* Must be before quad stage setup!
*/
for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
softpipe->cbuf_cache[i] = sp_create_tile_cache( &softpipe->pipe );
softpipe->zsbuf_cache = sp_create_tile_cache( &softpipe->pipe );
/* Allocate texture caches */
for (sh = 0; sh < Elements(softpipe->tex_cache); sh++) {
for (i = 0; i < Elements(softpipe->tex_cache[0]); i++) {
softpipe->tex_cache[sh][i] = sp_create_tex_tile_cache(&softpipe->pipe);
if (!softpipe->tex_cache[sh][i])
goto fail;
}
}
softpipe->fs_machine = tgsi_exec_machine_create();
/* setup quad rendering stages */
softpipe->quad.shade = sp_quad_shade_stage(softpipe);
softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
softpipe->quad.blend = sp_quad_blend_stage(softpipe);
softpipe->quad.pstipple = sp_quad_polygon_stipple_stage(softpipe);
/*
* Create drawing context and plug our rendering stage into it.
*/
if (sp_screen->use_llvm)
softpipe->draw = draw_create(&softpipe->pipe);
else
softpipe->draw = draw_create_no_llvm(&softpipe->pipe);
if (!softpipe->draw)
goto fail;
draw_texture_samplers(softpipe->draw,
PIPE_SHADER_VERTEX,
PIPE_MAX_SAMPLERS,
(struct tgsi_sampler **)
softpipe->tgsi.samplers_list[PIPE_SHADER_VERTEX]);
draw_texture_samplers(softpipe->draw,
PIPE_SHADER_GEOMETRY,
PIPE_MAX_SAMPLERS,
(struct tgsi_sampler **)
softpipe->tgsi.samplers_list[PIPE_SHADER_GEOMETRY]);
if (debug_get_bool_option( "SOFTPIPE_NO_RAST", FALSE ))
softpipe->no_rast = TRUE;
softpipe->vbuf_backend = sp_create_vbuf_backend(softpipe);
if (!softpipe->vbuf_backend)
goto fail;
softpipe->vbuf = draw_vbuf_stage(softpipe->draw, softpipe->vbuf_backend);
if (!softpipe->vbuf)
goto fail;
draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
draw_set_render(softpipe->draw, softpipe->vbuf_backend);
/* plug in AA line/point stages */
draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
/* Do polygon stipple w/ texture map + frag prog? */
#if DO_PSTIPPLE_IN_DRAW_MODULE
draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
#endif
draw_wide_point_sprites(softpipe->draw, TRUE);
sp_init_surface_functions(softpipe);
#if DO_PSTIPPLE_IN_HELPER_MODULE
/* create the polgon stipple sampler */
softpipe->pstipple.sampler = util_pstipple_create_sampler(&softpipe->pipe);
#endif
return &softpipe->pipe;
fail:
softpipe_destroy(&softpipe->pipe);
return NULL;
}
/**
* Query format support for creating a texture, drawing surface, etc.
* \param format the format to test
* \param type one of PIPE_TEXTURE, PIPE_SURFACE
*/
static boolean
softpipe_is_format_supported( struct pipe_screen *screen,
enum pipe_format format,
enum pipe_texture_target target,
unsigned sample_count,
unsigned bind)
{
struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
const struct util_format_description *format_desc;
assert(target == PIPE_BUFFER ||
target == PIPE_TEXTURE_1D ||
target == PIPE_TEXTURE_1D_ARRAY ||
target == PIPE_TEXTURE_2D ||
target == PIPE_TEXTURE_2D_ARRAY ||
target == PIPE_TEXTURE_RECT ||
target == PIPE_TEXTURE_3D ||
target == PIPE_TEXTURE_CUBE ||
target == PIPE_TEXTURE_CUBE_ARRAY);
format_desc = util_format_description(format);
if (!format_desc)
return FALSE;
if (sample_count > 1)
return FALSE;
if (bind & (PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT |
PIPE_BIND_SHARED)) {
if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
return FALSE;
}
if (bind & PIPE_BIND_RENDER_TARGET) {
if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
return FALSE;
/*
* Although possible, it is unnatural to render into compressed or YUV
* surfaces. So disable these here to avoid going into weird paths
* inside the state trackers.
*/
if (format_desc->block.width != 1 ||
format_desc->block.height != 1)
return FALSE;
}
if (bind & PIPE_BIND_DEPTH_STENCIL) {
if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
return FALSE;
}
if (format_desc->layout == UTIL_FORMAT_LAYOUT_BPTC ||
format_desc->layout == UTIL_FORMAT_LAYOUT_ASTC) {
/* Software decoding is not hooked up. */
return FALSE;
}
if ((bind & (PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW)) &&
((bind & PIPE_BIND_DISPLAY_TARGET) == 0) &&
target != PIPE_BUFFER) {
const struct util_format_description *desc =
util_format_description(format);
if (desc->nr_channels == 3 && desc->is_array) {
/* Don't support any 3-component formats for rendering/texturing
* since we don't support the corresponding 8-bit 3 channel UNORM
* formats. This allows us to support GL_ARB_copy_image between
* GL_RGB8 and GL_RGB8UI, for example. Otherwise, we may be asked to
* do a resource copy between PIPE_FORMAT_R8G8B8_UINT and
* PIPE_FORMAT_R8G8B8X8_UNORM, for example, which will not work
* (different bpp).
*/
return FALSE;
}
}
if (format_desc->layout == UTIL_FORMAT_LAYOUT_ETC &&
format != PIPE_FORMAT_ETC1_RGB8)
return FALSE;
/*
* All other operations (sampling, transfer, etc).
*/
/*
* Everything else should be supported by u_format.
*/
return TRUE;
}
/**
* Query format support for creating a texture, drawing surface, etc.
* \param format the format to test
* \param type one of PIPE_TEXTURE, PIPE_SURFACE
*/
static boolean
softpipe_is_format_supported( struct pipe_screen *screen,
enum pipe_format format,
enum pipe_texture_target target,
unsigned sample_count,
unsigned bind)
{
struct sw_winsys *winsys = softpipe_screen(screen)->winsys;
const struct util_format_description *format_desc;
assert(target == PIPE_BUFFER ||
target == PIPE_TEXTURE_1D ||
target == PIPE_TEXTURE_1D_ARRAY ||
target == PIPE_TEXTURE_2D ||
target == PIPE_TEXTURE_2D_ARRAY ||
target == PIPE_TEXTURE_RECT ||
target == PIPE_TEXTURE_3D ||
target == PIPE_TEXTURE_CUBE ||
target == PIPE_TEXTURE_CUBE_ARRAY);
format_desc = util_format_description(format);
if (!format_desc)
return FALSE;
if (sample_count > 1)
return FALSE;
if (bind & (PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT |
PIPE_BIND_SHARED)) {
if(!winsys->is_displaytarget_format_supported(winsys, bind, format))
return FALSE;
}
if (bind & PIPE_BIND_RENDER_TARGET) {
if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS)
return FALSE;
/*
* Although possible, it is unnatural to render into compressed or YUV
* surfaces. So disable these here to avoid going into weird paths
* inside the state trackers.
*/
if (format_desc->block.width != 1 ||
format_desc->block.height != 1)
return FALSE;
}
if (bind & PIPE_BIND_DEPTH_STENCIL) {
if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_ZS)
return FALSE;
}
/*
* All other operations (sampling, transfer, etc).
*/
if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
return util_format_s3tc_enabled;
}
/*
* Everything else should be supported by u_format.
*/
return TRUE;
}
static void
prepare_shader_sampling(
struct softpipe_context *sp,
unsigned num,
struct pipe_sampler_view **views,
unsigned shader_type,
struct pipe_resource *mapped_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS])
{
unsigned i;
uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
const void *addr;
assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
if (!num)
return;
for (i = 0; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
struct pipe_sampler_view *view = i < num ? views[i] : NULL;
if (view) {
struct pipe_resource *tex = view->texture;
struct softpipe_resource *sp_tex = softpipe_resource(tex);
unsigned width0 = tex->width0;
unsigned num_layers = tex->depth0;
unsigned first_level = 0;
unsigned last_level = 0;
/* We're referencing the texture's internal data, so save a
* reference to it.
*/
pipe_resource_reference(&mapped_tex[i], tex);
if (!sp_tex->dt) {
/* regular texture - setup array of mipmap level offsets */
MAYBE_UNUSED struct pipe_resource *res = view->texture;
int j;
if (view->target != PIPE_BUFFER) {
first_level = view->u.tex.first_level;
last_level = view->u.tex.last_level;
assert(first_level <= last_level);
assert(last_level <= res->last_level);
addr = sp_tex->data;
for (j = first_level; j <= last_level; j++) {
mip_offsets[j] = sp_tex->level_offset[j];
row_stride[j] = sp_tex->stride[j];
img_stride[j] = sp_tex->img_stride[j];
}
if (tex->target == PIPE_TEXTURE_1D_ARRAY ||
tex->target == PIPE_TEXTURE_2D_ARRAY ||
tex->target == PIPE_TEXTURE_CUBE ||
tex->target == PIPE_TEXTURE_CUBE_ARRAY) {
num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
for (j = first_level; j <= last_level; j++) {
mip_offsets[j] += view->u.tex.first_layer *
sp_tex->img_stride[j];
}
if (view->target == PIPE_TEXTURE_CUBE ||
view->target == PIPE_TEXTURE_CUBE_ARRAY) {
assert(num_layers % 6 == 0);
}
assert(view->u.tex.first_layer <= view->u.tex.last_layer);
assert(view->u.tex.last_layer < res->array_size);
}
}
else {
unsigned view_blocksize = util_format_get_blocksize(view->format);
addr = sp_tex->data;
/* probably don't really need to fill that out */
mip_offsets[0] = 0;
row_stride[0] = 0;
img_stride[0] = 0;
/* everything specified in number of elements here. */
width0 = view->u.buf.last_element - view->u.buf.first_element + 1;
addr = (uint8_t *)addr + view->u.buf.first_element *
view_blocksize;
assert(view->u.buf.first_element <= view->u.buf.last_element);
assert(view->u.buf.last_element * view_blocksize < res->width0);
}
}
else {
/* display target texture/surface */
/*
* XXX: Where should this be unmapped?
*/
struct softpipe_screen *screen = softpipe_screen(tex->screen);
struct sw_winsys *winsys = screen->winsys;
addr = winsys->displaytarget_map(winsys, sp_tex->dt,
PIPE_TRANSFER_READ);
row_stride[0] = sp_tex->stride[0];
img_stride[0] = sp_tex->img_stride[0];
mip_offsets[0] = 0;
assert(addr);
}
draw_set_mapped_texture(sp->draw,
shader_type,
i,
width0, tex->height0, num_layers,
first_level, last_level,
addr,
row_stride, img_stride, mip_offsets);
}
}
}
/**
* Geta pipe_transfer object which is used for moving data in/out of
* a resource object.
* \param pipe rendering context
* \param resource the resource to transfer in/out of
* \param level which mipmap level
* \param usage bitmask of PIPE_TRANSFER_x flags
* \param box the 1D/2D/3D region of interest
*/
static void *
softpipe_transfer_map(struct pipe_context *pipe,
struct pipe_resource *resource,
unsigned level,
unsigned usage,
const struct pipe_box *box,
struct pipe_transfer **transfer)
{
struct sw_winsys *winsys = softpipe_screen(pipe->screen)->winsys;
struct softpipe_resource *spr = softpipe_resource(resource);
struct softpipe_transfer *spt;
struct pipe_transfer *pt;
enum pipe_format format = resource->format;
uint8_t *map;
assert(resource);
assert(level <= resource->last_level);
/* make sure the requested region is in the image bounds */
assert(box->x + box->width <= (int) u_minify(resource->width0, level));
if (resource->target == PIPE_TEXTURE_1D_ARRAY) {
assert(box->y + box->height <= (int) resource->array_size);
}
else {
assert(box->y + box->height <= (int) u_minify(resource->height0, level));
if (resource->target == PIPE_TEXTURE_2D_ARRAY) {
assert(box->z + box->depth <= (int) resource->array_size);
}
else if (resource->target == PIPE_TEXTURE_CUBE) {
assert(box->z < 6);
}
else if (resource->target == PIPE_TEXTURE_CUBE_ARRAY) {
assert(box->z <= (int) resource->array_size);
}
else {
assert(box->z + box->depth <= (int) u_minify(resource->depth0, level));
}
}
/*
* Transfers, like other pipe operations, must happen in order, so flush the
* context if necessary.
*/
if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
boolean read_only = !(usage & PIPE_TRANSFER_WRITE);
boolean do_not_block = !!(usage & PIPE_TRANSFER_DONTBLOCK);
if (!softpipe_flush_resource(pipe, resource,
level, box->depth > 1 ? -1 : box->z,
0, /* flush_flags */
read_only,
TRUE, /* cpu_access */
do_not_block)) {
/*
* It would have blocked, but state tracker requested no to.
*/
assert(do_not_block);
return NULL;
}
}
spt = CALLOC_STRUCT(softpipe_transfer);
if (!spt)
return NULL;
pt = &spt->base;
pipe_resource_reference(&pt->resource, resource);
pt->level = level;
pt->usage = usage;
pt->box = *box;
pt->stride = spr->stride[level];
pt->layer_stride = spr->img_stride[level];
spt->offset = softpipe_get_tex_image_offset(spr, level, box->z);
spt->offset +=
box->y / util_format_get_blockheight(format) * spt->base.stride +
box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
/* resources backed by display target treated specially:
*/
if (spr->dt) {
map = winsys->displaytarget_map(winsys, spr->dt, usage);
}
else {
map = spr->data;
}
if (!map) {
pipe_resource_reference(&pt->resource, NULL);
FREE(spt);
return NULL;
}
*transfer = pt;
return map + spt->offset;
}