static struct pipe_sampler_view *
st_get_texture_sampler_view_from_stobj(struct st_context *st,
struct st_texture_object *stObj,
enum pipe_format format,
unsigned glsl_version)
{
struct pipe_sampler_view **sv;
const struct st_texture_image *firstImage;
if (!stObj || !stObj->pt) {
return NULL;
}
sv = st_texture_get_sampler_view(st, stObj);
if (util_format_is_depth_and_stencil(format)) {
if (stObj->base.StencilSampling)
format = util_format_stencil_only(format);
else {
firstImage = st_texture_image_const(_mesa_base_tex_image(&stObj->base));
if (firstImage->base._BaseFormat == GL_STENCIL_INDEX)
format = util_format_stencil_only(format);
}
}
/* if sampler view has changed dereference it */
if (*sv) {
if (check_sampler_swizzle(stObj, *sv, glsl_version) ||
(format != (*sv)->format) ||
gl_target_to_pipe(stObj->base.Target) != (*sv)->target ||
stObj->base.MinLevel + stObj->base.BaseLevel != (*sv)->u.tex.first_level ||
last_level(stObj) != (*sv)->u.tex.last_level ||
stObj->base.MinLayer != (*sv)->u.tex.first_layer ||
last_layer(stObj) != (*sv)->u.tex.last_layer) {
pipe_sampler_view_reference(sv, NULL);
}
}
if (!*sv) {
*sv = st_create_texture_sampler_view_from_stobj(st->pipe, stObj,
format, glsl_version);
} else if ((*sv)->context != st->pipe) {
/* Recreate view in correct context, use existing view as template */
struct pipe_sampler_view *new_sv =
st->pipe->create_sampler_view(st->pipe, stObj->pt, *sv);
pipe_sampler_view_reference(sv, NULL);
*sv = new_sv;
}
return *sv;
}
/**
* Determine the format for the texture sampler view.
*/
static enum pipe_format
get_sampler_view_format(struct st_context *st,
const struct st_texture_object *stObj,
const struct gl_sampler_object *samp)
{
enum pipe_format format;
if (stObj->base.Target == GL_TEXTURE_BUFFER) {
format =
st_mesa_format_to_pipe_format(st, stObj->base._BufferObjectFormat);
}
else {
format =
stObj->surface_based ? stObj->surface_format : stObj->pt->format;
if (util_format_is_depth_and_stencil(format)) {
if (stObj->base.StencilSampling) {
format = util_format_stencil_only(format);
}
else {
GLenum baseFormat = _mesa_texture_base_format(&stObj->base);
if (baseFormat == GL_STENCIL_INDEX) {
format = util_format_stencil_only(format);
}
}
}
else {
/* If sRGB decoding is off, use the linear format */
if (samp->sRGBDecode == GL_SKIP_DECODE_EXT) {
format = util_format_linear(format);
}
/* Use R8_UNORM for video formats */
switch (format) {
case PIPE_FORMAT_NV12:
case PIPE_FORMAT_IYUV:
format = PIPE_FORMAT_R8_UNORM;
break;
default:
break;
}
}
}
return format;
}
static struct pipe_sampler_view *
st_get_texture_sampler_view_from_stobj(struct st_context *st,
struct st_texture_object *stObj,
const struct gl_sampler_object *samp,
enum pipe_format format)
{
struct pipe_sampler_view **sv;
if (!stObj || !stObj->pt) {
return NULL;
}
sv = st_texture_get_sampler_view(st, stObj);
if (stObj->base.StencilSampling &&
util_format_is_depth_and_stencil(format))
format = util_format_stencil_only(format);
/* if sampler view has changed dereference it */
if (*sv) {
if (check_sampler_swizzle(stObj, *sv) ||
(format != (*sv)->format) ||
stObj->base.BaseLevel != (*sv)->u.tex.first_level) {
pipe_sampler_view_reference(sv, NULL);
}
}
if (!*sv) {
*sv = st_create_texture_sampler_view_from_stobj(st->pipe, stObj, samp, format);
} else if ((*sv)->context != st->pipe) {
/* Recreate view in correct context, use existing view as template */
struct pipe_sampler_view *new_sv =
st->pipe->create_sampler_view(st->pipe, stObj->pt, *sv);
pipe_sampler_view_reference(sv, NULL);
*sv = new_sv;
}
return *sv;
}
/**
* Copy pixel block from src surface to dst surface.
* Overlapping regions are acceptable.
* Flipping and stretching are supported.
* \param filter one of PIPE_TEX_MIPFILTER_NEAREST/LINEAR
* \param writemask controls which channels in the dest surface are sourced
* from the src surface. Disabled channels are sourced
* from (0,0,0,1).
*/
void
util_blit_pixels(struct blit_state *ctx,
struct pipe_resource *src_tex,
unsigned src_level,
int srcX0, int srcY0,
int srcX1, int srcY1,
int srcZ0,
struct pipe_surface *dst,
int dstX0, int dstY0,
int dstX1, int dstY1,
float z, uint filter,
uint writemask, uint zs_writemask)
{
struct pipe_context *pipe = ctx->pipe;
struct pipe_screen *screen = pipe->screen;
enum pipe_format src_format, dst_format;
struct pipe_sampler_view *sampler_view = NULL;
struct pipe_sampler_view sv_templ;
struct pipe_surface *dst_surface;
struct pipe_framebuffer_state fb;
const int srcW = abs(srcX1 - srcX0);
const int srcH = abs(srcY1 - srcY0);
unsigned offset;
boolean overlap;
float s0, t0, s1, t1;
boolean normalized;
boolean is_stencil, is_depth, blit_depth, blit_stencil;
const struct util_format_description *src_desc =
util_format_description(src_tex->format);
assert(filter == PIPE_TEX_MIPFILTER_NEAREST ||
filter == PIPE_TEX_MIPFILTER_LINEAR);
assert(src_level <= src_tex->last_level);
/* do the regions overlap? */
overlap = src_tex == dst->texture &&
dst->u.tex.level == src_level &&
dst->u.tex.first_layer == srcZ0 &&
regions_overlap(srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1);
src_format = util_format_linear(src_tex->format);
dst_format = util_format_linear(dst->texture->format);
/* See whether we will blit depth or stencil. */
is_depth = util_format_has_depth(src_desc);
is_stencil = util_format_has_stencil(src_desc);
blit_depth = is_depth && (zs_writemask & BLIT_WRITEMASK_Z);
blit_stencil = is_stencil && (zs_writemask & BLIT_WRITEMASK_STENCIL);
assert((writemask && !zs_writemask && !is_depth && !is_stencil) ||
(!writemask && (blit_depth || blit_stencil)));
/*
* Check for simple case: no format conversion, no flipping, no stretching,
* no overlapping, same number of samples.
* Filter mode should not matter since there's no stretching.
*/
if (formats_compatible(src_format, dst_format) &&
src_tex->nr_samples == dst->texture->nr_samples &&
is_stencil == blit_stencil &&
is_depth == blit_depth &&
srcX0 < srcX1 &&
dstX0 < dstX1 &&
srcY0 < srcY1 &&
dstY0 < dstY1 &&
(dstX1 - dstX0) == (srcX1 - srcX0) &&
(dstY1 - dstY0) == (srcY1 - srcY0) &&
!overlap) {
struct pipe_box src_box;
src_box.x = srcX0;
src_box.y = srcY0;
src_box.z = srcZ0;
src_box.width = srcW;
src_box.height = srcH;
src_box.depth = 1;
pipe->resource_copy_region(pipe,
dst->texture, dst->u.tex.level,
dstX0, dstY0, dst->u.tex.first_layer,/* dest */
src_tex, src_level,
&src_box);
return;
}
/* XXX Reading multisample textures is unimplemented. */
assert(src_tex->nr_samples <= 1);
if (src_tex->nr_samples > 1) {
return;
}
/* It's a mistake to call this function with a stencil format and
* without shader stencil export. We don't do software fallbacks here.
* Ignore stencil and only copy depth.
*/
if (blit_stencil && !ctx->has_stencil_export) {
blit_stencil = FALSE;
if (!blit_depth)
return;
}
if (dst_format == dst->format) {
dst_surface = dst;
} else {
struct pipe_surface templ = *dst;
templ.format = dst_format;
dst_surface = pipe->create_surface(pipe, dst->texture, &templ);
}
/* Create a temporary texture when src and dest alias.
*/
if (src_tex == dst_surface->texture &&
dst_surface->u.tex.level == src_level &&
dst_surface->u.tex.first_layer == srcZ0) {
/* Make a temporary texture which contains a copy of the source pixels.
* Then we'll sample from the temporary texture.
*/
struct pipe_resource texTemp;
struct pipe_resource *tex;
struct pipe_sampler_view sv_templ;
struct pipe_box src_box;
const int srcLeft = MIN2(srcX0, srcX1);
const int srcTop = MIN2(srcY0, srcY1);
if (srcLeft != srcX0) {
/* left-right flip */
int tmp = dstX0;
dstX0 = dstX1;
dstX1 = tmp;
}
if (srcTop != srcY0) {
/* up-down flip */
int tmp = dstY0;
dstY0 = dstY1;
dstY1 = tmp;
}
/* create temp texture */
memset(&texTemp, 0, sizeof(texTemp));
texTemp.target = ctx->internal_target;
texTemp.format = src_format;
texTemp.last_level = 0;
texTemp.width0 = srcW;
texTemp.height0 = srcH;
texTemp.depth0 = 1;
texTemp.array_size = 1;
texTemp.bind = PIPE_BIND_SAMPLER_VIEW;
tex = screen->resource_create(screen, &texTemp);
if (!tex)
return;
src_box.x = srcLeft;
src_box.y = srcTop;
src_box.z = srcZ0;
src_box.width = srcW;
src_box.height = srcH;
src_box.depth = 1;
/* load temp texture */
pipe->resource_copy_region(pipe,
tex, 0, 0, 0, 0, /* dest */
src_tex, src_level, &src_box);
normalized = tex->target != PIPE_TEXTURE_RECT;
if(normalized) {
s0 = 0.0f;
s1 = 1.0f;
t0 = 0.0f;
t1 = 1.0f;
}
else {
s0 = 0;
s1 = srcW;
t0 = 0;
t1 = srcH;
}
u_sampler_view_default_template(&sv_templ, tex, tex->format);
if (!blit_depth && blit_stencil) {
/* set a stencil-only format, e.g. Z24S8 --> X24S8 */
sv_templ.format = util_format_stencil_only(tex->format);
assert(sv_templ.format != PIPE_FORMAT_NONE);
}
sampler_view = pipe->create_sampler_view(pipe, tex, &sv_templ);
if (!sampler_view) {
pipe_resource_reference(&tex, NULL);
return;
}
pipe_resource_reference(&tex, NULL);
}
else {
/* Directly sample from the source resource/texture */
u_sampler_view_default_template(&sv_templ, src_tex, src_format);
if (!blit_depth && blit_stencil) {
/* set a stencil-only format, e.g. Z24S8 --> X24S8 */
sv_templ.format = util_format_stencil_only(src_format);
assert(sv_templ.format != PIPE_FORMAT_NONE);
}
sampler_view = pipe->create_sampler_view(pipe, src_tex, &sv_templ);
if (!sampler_view) {
return;
}
s0 = srcX0;
s1 = srcX1;
t0 = srcY0;
t1 = srcY1;
normalized = sampler_view->texture->target != PIPE_TEXTURE_RECT;
if(normalized)
{
s0 /= (float)(u_minify(sampler_view->texture->width0, src_level));
s1 /= (float)(u_minify(sampler_view->texture->width0, src_level));
t0 /= (float)(u_minify(sampler_view->texture->height0, src_level));
t1 /= (float)(u_minify(sampler_view->texture->height0, src_level));
}
}
assert(screen->is_format_supported(screen, sampler_view->format,
ctx->internal_target, sampler_view->texture->nr_samples,
PIPE_BIND_SAMPLER_VIEW));
assert(screen->is_format_supported(screen, dst_format, ctx->internal_target,
dst_surface->texture->nr_samples,
is_depth || is_stencil ? PIPE_BIND_DEPTH_STENCIL :
PIPE_BIND_RENDER_TARGET));
/* save state (restored below) */
cso_save_blend(ctx->cso);
cso_save_depth_stencil_alpha(ctx->cso);
cso_save_rasterizer(ctx->cso);
cso_save_sample_mask(ctx->cso);
cso_save_samplers(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_save_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_save_stream_outputs(ctx->cso);
cso_save_viewport(ctx->cso);
cso_save_framebuffer(ctx->cso);
cso_save_fragment_shader(ctx->cso);
cso_save_vertex_shader(ctx->cso);
cso_save_geometry_shader(ctx->cso);
cso_save_vertex_elements(ctx->cso);
cso_save_aux_vertex_buffer_slot(ctx->cso);
cso_save_render_condition(ctx->cso);
/* set misc state we care about */
if (writemask)
cso_set_blend(ctx->cso, &ctx->blend_write_color);
else
cso_set_blend(ctx->cso, &ctx->blend_keep_color);
cso_set_sample_mask(ctx->cso, ~0);
cso_set_rasterizer(ctx->cso, &ctx->rasterizer);
cso_set_vertex_elements(ctx->cso, 2, ctx->velem);
cso_set_stream_outputs(ctx->cso, 0, NULL, 0);
cso_set_render_condition(ctx->cso, NULL, 0);
/* default sampler state */
ctx->sampler.normalized_coords = normalized;
ctx->sampler.min_img_filter = filter;
ctx->sampler.mag_img_filter = filter;
ctx->sampler.min_lod = src_level;
ctx->sampler.max_lod = src_level;
/* Depth stencil state, fragment shader and sampler setup depending on what
* we blit.
*/
if (blit_depth && blit_stencil) {
cso_single_sampler(ctx->cso, PIPE_SHADER_FRAGMENT, 0, &ctx->sampler);
/* don't filter stencil */
ctx->sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
ctx->sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
cso_single_sampler(ctx->cso, PIPE_SHADER_FRAGMENT, 1, &ctx->sampler);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->dsa_write_depthstencil);
set_depthstencil_fragment_shader(ctx, sampler_view->texture->target);
}
else if (blit_depth) {
cso_single_sampler(ctx->cso, PIPE_SHADER_FRAGMENT, 0, &ctx->sampler);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->dsa_write_depth);
set_depth_fragment_shader(ctx, sampler_view->texture->target);
}
else if (blit_stencil) {
/* don't filter stencil */
ctx->sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
ctx->sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
cso_single_sampler(ctx->cso, PIPE_SHADER_FRAGMENT, 0, &ctx->sampler);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->dsa_write_stencil);
set_stencil_fragment_shader(ctx, sampler_view->texture->target);
}
else { /* color */
cso_single_sampler(ctx->cso, PIPE_SHADER_FRAGMENT, 0, &ctx->sampler);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->dsa_keep_depthstencil);
set_fragment_shader(ctx, writemask, sampler_view->texture->target);
}
cso_single_sampler_done(ctx->cso, PIPE_SHADER_FRAGMENT);
/* textures */
if (blit_depth && blit_stencil) {
/* Setup two samplers, one for depth and the other one for stencil. */
struct pipe_sampler_view templ;
struct pipe_sampler_view *views[2];
templ = *sampler_view;
templ.format = util_format_stencil_only(templ.format);
assert(templ.format != PIPE_FORMAT_NONE);
views[0] = sampler_view;
views[1] = pipe->create_sampler_view(pipe, views[0]->texture, &templ);
cso_set_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT, 2, views);
pipe_sampler_view_reference(&views[1], NULL);
}
else {
cso_set_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT, 1, &sampler_view);
}
/* viewport */
ctx->viewport.scale[0] = 0.5f * dst_surface->width;
ctx->viewport.scale[1] = 0.5f * dst_surface->height;
ctx->viewport.scale[2] = 0.5f;
ctx->viewport.scale[3] = 1.0f;
ctx->viewport.translate[0] = 0.5f * dst_surface->width;
ctx->viewport.translate[1] = 0.5f * dst_surface->height;
ctx->viewport.translate[2] = 0.5f;
ctx->viewport.translate[3] = 0.0f;
cso_set_viewport(ctx->cso, &ctx->viewport);
set_vertex_shader(ctx);
cso_set_geometry_shader_handle(ctx->cso, NULL);
/* drawing dest */
memset(&fb, 0, sizeof(fb));
fb.width = dst_surface->width;
fb.height = dst_surface->height;
if (blit_depth || blit_stencil) {
fb.zsbuf = dst_surface;
} else {
fb.nr_cbufs = 1;
fb.cbufs[0] = dst_surface;
}
cso_set_framebuffer(ctx->cso, &fb);
/* draw quad */
offset = setup_vertex_data_tex(ctx,
(float) dstX0 / dst_surface->width * 2.0f - 1.0f,
(float) dstY0 / dst_surface->height * 2.0f - 1.0f,
(float) dstX1 / dst_surface->width * 2.0f - 1.0f,
(float) dstY1 / dst_surface->height * 2.0f - 1.0f,
s0, t0,
s1, t1,
z);
if (ctx->vbuf) {
util_draw_vertex_buffer(ctx->pipe, ctx->cso, ctx->vbuf,
cso_get_aux_vertex_buffer_slot(ctx->cso),
offset,
PIPE_PRIM_TRIANGLE_FAN,
4, /* verts */
2); /* attribs/vert */
}
/* restore state we changed */
cso_restore_blend(ctx->cso);
cso_restore_depth_stencil_alpha(ctx->cso);
cso_restore_rasterizer(ctx->cso);
cso_restore_sample_mask(ctx->cso);
cso_restore_samplers(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_restore_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT);
cso_restore_viewport(ctx->cso);
cso_restore_framebuffer(ctx->cso);
cso_restore_fragment_shader(ctx->cso);
cso_restore_vertex_shader(ctx->cso);
cso_restore_geometry_shader(ctx->cso);
cso_restore_vertex_elements(ctx->cso);
cso_restore_aux_vertex_buffer_slot(ctx->cso);
cso_restore_stream_outputs(ctx->cso);
cso_restore_render_condition(ctx->cso);
pipe_sampler_view_reference(&sampler_view, NULL);
if (dst_surface != dst)
pipe_surface_reference(&dst_surface, NULL);
}