/**
* Initialize the texture image's FetchTexel methods.
*/
static void
set_fetch_functions(struct swrast_texture_image *texImage, GLuint dims)
{
gl_format format = texImage->Base.TexFormat;
ASSERT(dims == 1 || dims == 2 || dims == 3);
if (texImage->Base.TexObject->Sampler.sRGBDecode == GL_SKIP_DECODE_EXT &&
_mesa_get_format_color_encoding(format) == GL_SRGB) {
format = _mesa_get_srgb_format_linear(format);
}
texImage->FetchTexel = _mesa_get_texel_fetch_func(format, dims);
ASSERT(texImage->FetchTexel);
}
/**
* Validate a renderbuffer attachment for a particular set of bindings.
*/
static GLboolean
st_validate_attachment(struct gl_context *ctx,
struct pipe_screen *screen,
const struct gl_renderbuffer_attachment *att,
unsigned bindings)
{
const struct st_texture_object *stObj = st_texture_object(att->Texture);
enum pipe_format format;
mesa_format texFormat;
GLboolean valid;
/* Sanity check: we must be binding the surface as a (color) render target
* or depth/stencil target.
*/
assert(bindings == PIPE_BIND_RENDER_TARGET ||
bindings == PIPE_BIND_DEPTH_STENCIL);
/* Only validate texture attachments for now, since
* st_renderbuffer_alloc_storage makes sure that
* the format is supported.
*/
if (att->Type != GL_TEXTURE)
return GL_TRUE;
if (!stObj || !stObj->pt)
return GL_FALSE;
format = stObj->pt->format;
texFormat = att->Renderbuffer->TexImage->TexFormat;
/* If the encoding is sRGB and sRGB rendering cannot be enabled,
* check for linear format support instead.
* Later when we create a surface, we change the format to a linear one. */
if (!ctx->Extensions.EXT_framebuffer_sRGB &&
_mesa_get_format_color_encoding(texFormat) == GL_SRGB) {
const mesa_format linearFormat = _mesa_get_srgb_format_linear(texFormat);
format = st_mesa_format_to_pipe_format(st_context(ctx), linearFormat);
}
valid = screen->is_format_supported(screen, format,
PIPE_TEXTURE_2D,
stObj->pt->nr_samples, bindings);
if (!valid) {
st_fbo_invalid("Invalid format");
}
return valid;
}
/**
* Validate a renderbuffer attachment for a particular set of bindings.
*/
static GLboolean
st_validate_attachment(struct gl_context *ctx,
struct pipe_screen *screen,
const struct gl_renderbuffer_attachment *att,
unsigned bindings)
{
const struct st_texture_object *stObj = st_texture_object(att->Texture);
enum pipe_format format;
gl_format texFormat;
GLboolean valid;
/* Only validate texture attachments for now, since
* st_renderbuffer_alloc_storage makes sure that
* the format is supported.
*/
if (att->Type != GL_TEXTURE)
return GL_TRUE;
if (!stObj)
return GL_FALSE;
format = stObj->pt->format;
texFormat = _mesa_get_attachment_teximage_const(att)->TexFormat;
/* If the encoding is sRGB and sRGB rendering cannot be enabled,
* check for linear format support instead.
* Later when we create a surface, we change the format to a linear one. */
if (!ctx->Extensions.EXT_framebuffer_sRGB &&
_mesa_get_format_color_encoding(texFormat) == GL_SRGB) {
const gl_format linearFormat = _mesa_get_srgb_format_linear(texFormat);
format = st_mesa_format_to_pipe_format(linearFormat);
}
valid = screen->is_format_supported(screen, format,
PIPE_TEXTURE_2D,
stObj->pt->nr_samples, bindings);
if (!valid) {
st_fbo_invalid("Invalid format");
}
return valid;
}
/**
* Initialize the texture image's FetchTexel methods.
*/
static void
set_fetch_functions(const struct gl_sampler_object *samp,
struct swrast_texture_image *texImage, GLuint dims)
{
gl_format format = texImage->Base.TexFormat;
#ifdef DEBUG
/* check that the table entries are sorted by format name */
gl_format fmt;
for (fmt = 0; fmt < MESA_FORMAT_COUNT; fmt++) {
assert(texfetch_funcs[fmt].Name == fmt);
}
#endif
STATIC_ASSERT(Elements(texfetch_funcs) == MESA_FORMAT_COUNT);
if (samp->sRGBDecode == GL_SKIP_DECODE_EXT &&
_mesa_get_format_color_encoding(format) == GL_SRGB) {
format = _mesa_get_srgb_format_linear(format);
}
assert(format < MESA_FORMAT_COUNT);
switch (dims) {
case 1:
texImage->FetchTexel = texfetch_funcs[format].Fetch1D;
break;
case 2:
texImage->FetchTexel = texfetch_funcs[format].Fetch2D;
break;
case 3:
texImage->FetchTexel = texfetch_funcs[format].Fetch3D;
break;
default:
assert(!"Bad dims in set_fetch_functions()");
}
texImage->FetchCompressedTexel = _mesa_get_compressed_fetch_func(format);
ASSERT(texImage->FetchTexel);
}
/**
* Note: if the src (or dst) is a 2D multisample array texture on Gen7+ using
* INTEL_MSAA_LAYOUT_UMS or INTEL_MSAA_LAYOUT_CMS, src_layer (dst_layer) is
* the physical layer holding sample 0. So, for example, if
* src_mt->num_samples == 4, then logical layer n corresponds to src_layer ==
* 4*n.
*/
void
brw_blorp_blit_miptrees(struct brw_context *brw,
struct intel_mipmap_tree *src_mt,
unsigned src_level, unsigned src_layer,
mesa_format src_format, int src_swizzle,
struct intel_mipmap_tree *dst_mt,
unsigned dst_level, unsigned dst_layer,
mesa_format dst_format,
float src_x0, float src_y0,
float src_x1, float src_y1,
float dst_x0, float dst_y0,
float dst_x1, float dst_y1,
GLenum filter, bool mirror_x, bool mirror_y,
bool decode_srgb, bool encode_srgb)
{
/* Blorp operates in logical layers */
src_layer = physical_to_logical_layer(src_mt, src_layer);
dst_layer = physical_to_logical_layer(dst_mt, dst_layer);
DBG("%s from %dx %s mt %p %d %d (%f,%f) (%f,%f)"
"to %dx %s mt %p %d %d (%f,%f) (%f,%f) (flip %d,%d)\n",
__func__,
src_mt->num_samples, _mesa_get_format_name(src_mt->format), src_mt,
src_level, src_layer, src_x0, src_y0, src_x1, src_y1,
dst_mt->num_samples, _mesa_get_format_name(dst_mt->format), dst_mt,
dst_level, dst_layer, dst_x0, dst_y0, dst_x1, dst_y1,
mirror_x, mirror_y);
if (!decode_srgb && _mesa_get_format_color_encoding(src_format) == GL_SRGB)
src_format = _mesa_get_srgb_format_linear(src_format);
if (!encode_srgb && _mesa_get_format_color_encoding(dst_format) == GL_SRGB)
dst_format = _mesa_get_srgb_format_linear(dst_format);
/* When doing a multisample resolve of a GL_LUMINANCE32F or GL_INTENSITY32F
* texture, the above code configures the source format for L32_FLOAT or
* I32_FLOAT, and the destination format for R32_FLOAT. On Sandy Bridge,
* the SAMPLE message appears to handle multisampled L32_FLOAT and
* I32_FLOAT textures incorrectly, resulting in blocky artifacts. So work
* around the problem by using a source format of R32_FLOAT. This
* shouldn't affect rendering correctness, since the destination format is
* R32_FLOAT, so only the contents of the red channel matters.
*/
if (brw->gen == 6 &&
src_mt->num_samples > 1 && dst_mt->num_samples <= 1 &&
src_mt->format == dst_mt->format &&
(dst_format == MESA_FORMAT_L_FLOAT32 ||
dst_format == MESA_FORMAT_I_FLOAT32)) {
src_format = dst_format = MESA_FORMAT_R_FLOAT32;
}
uint32_t src_usage_flags = (1 << ISL_AUX_USAGE_MCS);
if (src_format == src_mt->format)
src_usage_flags |= (1 << ISL_AUX_USAGE_CCS_E);
uint32_t dst_usage_flags = (1 << ISL_AUX_USAGE_MCS);
if (dst_format == dst_mt->format) {
dst_usage_flags |= (1 << ISL_AUX_USAGE_CCS_E) |
(1 << ISL_AUX_USAGE_CCS_D);
}
struct isl_surf tmp_surfs[4];
struct blorp_surf src_surf, dst_surf;
blorp_surf_for_miptree(brw, &src_surf, src_mt, false, src_usage_flags,
&src_level, src_layer, 1, &tmp_surfs[0]);
blorp_surf_for_miptree(brw, &dst_surf, dst_mt, true, dst_usage_flags,
&dst_level, dst_layer, 1, &tmp_surfs[2]);
struct isl_swizzle src_isl_swizzle = {
.r = swizzle_to_scs(GET_SWZ(src_swizzle, 0)),
.g = swizzle_to_scs(GET_SWZ(src_swizzle, 1)),
.b = swizzle_to_scs(GET_SWZ(src_swizzle, 2)),
.a = swizzle_to_scs(GET_SWZ(src_swizzle, 3)),
};
struct blorp_batch batch;
blorp_batch_init(&brw->blorp, &batch, brw, 0);
blorp_blit(&batch, &src_surf, src_level, src_layer,
brw_blorp_to_isl_format(brw, src_format, false), src_isl_swizzle,
&dst_surf, dst_level, dst_layer,
brw_blorp_to_isl_format(brw, dst_format, true),
ISL_SWIZZLE_IDENTITY,
src_x0, src_y0, src_x1, src_y1,
dst_x0, dst_y0, dst_x1, dst_y1,
filter, mirror_x, mirror_y);
blorp_batch_finish(&batch);
}
void
brw_blorp_copy_miptrees(struct brw_context *brw,
struct intel_mipmap_tree *src_mt,
unsigned src_level, unsigned src_layer,
struct intel_mipmap_tree *dst_mt,
unsigned dst_level, unsigned dst_layer,
unsigned src_x, unsigned src_y,
unsigned dst_x, unsigned dst_y,
unsigned src_width, unsigned src_height)
{
DBG("%s from %dx %s mt %p %d %d (%d,%d) %dx%d"
"to %dx %s mt %p %d %d (%d,%d)\n",
__func__,
src_mt->num_samples, _mesa_get_format_name(src_mt->format), src_mt,
src_level, src_layer, src_x, src_y, src_width, src_height,
dst_mt->num_samples, _mesa_get_format_name(dst_mt->format), dst_mt,
dst_level, dst_layer, dst_x, dst_y);
struct isl_surf tmp_surfs[4];
struct blorp_surf src_surf, dst_surf;
blorp_surf_for_miptree(brw, &src_surf, src_mt, false,
(1 << ISL_AUX_USAGE_MCS) |
(1 << ISL_AUX_USAGE_CCS_E),
&src_level, src_layer, 1, &tmp_surfs[0]);
blorp_surf_for_miptree(brw, &dst_surf, dst_mt, true,
(1 << ISL_AUX_USAGE_MCS) |
(1 << ISL_AUX_USAGE_CCS_E),
&dst_level, dst_layer, 1, &tmp_surfs[2]);
struct blorp_batch batch;
blorp_batch_init(&brw->blorp, &batch, brw, 0);
blorp_copy(&batch, &src_surf, src_level, src_layer,
&dst_surf, dst_level, dst_layer,
src_x, src_y, dst_x, dst_y, src_width, src_height);
blorp_batch_finish(&batch);
}
/**
* Check if the call to _mesa_meta_GenerateMipmap() will require a
* software fallback. The fallback path will require that the texture
* images are mapped.
* \return GL_TRUE if a fallback is needed, GL_FALSE otherwise
*/
static bool
fallback_required(struct gl_context *ctx, GLenum target,
struct gl_texture_object *texObj)
{
const GLuint fboSave = ctx->DrawBuffer->Name;
struct gen_mipmap_state *mipmap = &ctx->Meta->Mipmap;
struct gl_texture_image *baseImage;
GLuint srcLevel;
GLenum status;
/* check for fallbacks */
// if (target == GL_TEXTURE_3D) {
// _mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
// "glGenerateMipmap() to %s target\n",
// _mesa_lookup_enum_by_nr(target));
// return true;
// }
srcLevel = texObj->BaseLevel;
baseImage = _mesa_select_tex_image(texObj, target, srcLevel);
if (!baseImage) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() couldn't find base teximage\n");
return true;
}
if (_mesa_is_format_compressed(baseImage->TexFormat)) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() with %s format\n",
_mesa_get_format_name(baseImage->TexFormat));
return true;
}
if (_mesa_get_format_color_encoding(baseImage->TexFormat) == GL_SRGB &&
!ctx->Extensions.EXT_texture_sRGB_decode) {
/* The texture format is sRGB but we can't turn off sRGB->linear
* texture sample conversion. So we won't be able to generate the
* right colors when rendering. Need to use a fallback.
*/
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() of sRGB texture without "
"sRGB decode\n");
return true;
}
/*
* Test that we can actually render in the texture's format.
*/
if (!mipmap->FBO)
glGenFramebuffers(1, &mipmap->FBO);
glBindFramebuffer(GL_FRAMEBUFFER, mipmap->FBO);
_mesa_meta_bind_fbo_image(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, baseImage, 0);
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
glBindFramebuffer(GL_FRAMEBUFFER, fboSave);
if (status != GL_FRAMEBUFFER_COMPLETE) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() got incomplete FBO\n");
return true;
}
return false;
}
/**
* The glGet queries of the framebuffer red/green/blue size, stencil size,
* etc. are satisfied by the fields of ctx->DrawBuffer->Visual. These can
* change depending on the renderbuffer bindings. This function updates
* the given framebuffer's Visual from the current renderbuffer bindings.
*
* This may apply to user-created framebuffers or window system framebuffers.
*
* Also note: ctx->DrawBuffer->Visual.depthBits might not equal
* ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer.DepthBits.
* The former one is used to convert floating point depth values into
* integer Z values.
*/
void
_mesa_update_framebuffer_visual(struct gl_context *ctx,
struct gl_framebuffer *fb)
{
GLuint i;
memset(&fb->Visual, 0, sizeof(fb->Visual));
fb->Visual.rgbMode = GL_TRUE; /* assume this */
/* find first RGB renderbuffer */
for (i = 0; i < BUFFER_COUNT; i++) {
if (fb->Attachment[i].Renderbuffer) {
const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
const mesa_format fmt = rb->Format;
/* Grab samples and sampleBuffers from any attachment point (assuming
* the framebuffer is complete, we'll get the same answer from all
* attachments).
*/
fb->Visual.samples = rb->NumSamples;
fb->Visual.sampleBuffers = rb->NumSamples > 0 ? 1 : 0;
if (_mesa_is_legal_color_format(ctx, baseFormat)) {
fb->Visual.redBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
fb->Visual.greenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
fb->Visual.blueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
fb->Visual.alphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
fb->Visual.rgbBits = fb->Visual.redBits
+ fb->Visual.greenBits + fb->Visual.blueBits;
if (_mesa_get_format_color_encoding(fmt) == GL_SRGB)
fb->Visual.sRGBCapable = ctx->Extensions.EXT_framebuffer_sRGB;
break;
}
}
}
fb->Visual.floatMode = GL_FALSE;
for (i = 0; i < BUFFER_COUNT; i++) {
if (fb->Attachment[i].Renderbuffer) {
const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
const mesa_format fmt = rb->Format;
if (_mesa_get_format_datatype(fmt) == GL_FLOAT) {
fb->Visual.floatMode = GL_TRUE;
break;
}
}
}
if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_DEPTH].Renderbuffer;
const mesa_format fmt = rb->Format;
fb->Visual.haveDepthBuffer = GL_TRUE;
fb->Visual.depthBits = _mesa_get_format_bits(fmt, GL_DEPTH_BITS);
}
if (fb->Attachment[BUFFER_STENCIL].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_STENCIL].Renderbuffer;
const mesa_format fmt = rb->Format;
fb->Visual.haveStencilBuffer = GL_TRUE;
fb->Visual.stencilBits = _mesa_get_format_bits(fmt, GL_STENCIL_BITS);
}
if (fb->Attachment[BUFFER_ACCUM].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_ACCUM].Renderbuffer;
const mesa_format fmt = rb->Format;
fb->Visual.haveAccumBuffer = GL_TRUE;
fb->Visual.accumRedBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
fb->Visual.accumGreenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
fb->Visual.accumBlueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
fb->Visual.accumAlphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
}
compute_depth_max(fb);
}
/**
* Create or update the pipe_surface of a FBO renderbuffer.
* This is usually called after st_finalize_texture.
*/
void
st_update_renderbuffer_surface(struct st_context *st,
struct st_renderbuffer *strb)
{
struct pipe_context *pipe = st->pipe;
struct pipe_resource *resource = strb->texture;
int rtt_width = strb->Base.Width;
int rtt_height = strb->Base.Height;
int rtt_depth = strb->Base.Depth;
/*
* For winsys fbo, it is possible that the renderbuffer is sRGB-capable but
* the format of strb->texture is linear (because we have no control over
* the format). Check strb->Base.Format instead of strb->texture->format
* to determine if the rb is sRGB-capable.
*/
boolean enable_srgb = (st->ctx->Color.sRGBEnabled &&
_mesa_get_format_color_encoding(strb->Base.Format) == GL_SRGB);
enum pipe_format format = (enable_srgb) ?
util_format_srgb(resource->format) :
util_format_linear(resource->format);
unsigned first_layer, last_layer, level;
if (resource->target == PIPE_TEXTURE_1D_ARRAY) {
rtt_depth = rtt_height;
rtt_height = 1;
}
/* find matching mipmap level size */
for (level = 0; level <= resource->last_level; level++) {
if (u_minify(resource->width0, level) == rtt_width &&
u_minify(resource->height0, level) == rtt_height &&
(resource->target != PIPE_TEXTURE_3D ||
u_minify(resource->depth0, level) == rtt_depth)) {
break;
}
}
assert(level <= resource->last_level);
/* determine the layer bounds */
if (strb->rtt_layered) {
first_layer = 0;
last_layer = util_max_layer(strb->texture, level);
}
else {
first_layer =
last_layer = strb->rtt_face + strb->rtt_slice;
}
if (!strb->surface ||
strb->surface->texture->nr_samples != strb->Base.NumSamples ||
strb->surface->format != format ||
strb->surface->texture != resource ||
strb->surface->width != rtt_width ||
strb->surface->height != rtt_height ||
strb->surface->u.tex.level != level ||
strb->surface->u.tex.first_layer != first_layer ||
strb->surface->u.tex.last_layer != last_layer) {
/* create a new pipe_surface */
struct pipe_surface surf_tmpl;
memset(&surf_tmpl, 0, sizeof(surf_tmpl));
surf_tmpl.format = format;
surf_tmpl.u.tex.level = level;
surf_tmpl.u.tex.first_layer = first_layer;
surf_tmpl.u.tex.last_layer = last_layer;
pipe_surface_reference(&strb->surface, NULL);
strb->surface = pipe->create_surface(pipe, resource, &surf_tmpl);
}
}
/**
* Update framebuffer state (color, depth, stencil, etc. buffers)
*/
void
st_update_framebuffer_state( struct st_context *st )
{
struct pipe_framebuffer_state framebuffer;
struct gl_framebuffer *fb = st->ctx->DrawBuffer;
struct st_renderbuffer *strb;
GLuint i;
st_flush_bitmap_cache(st);
st_invalidate_readpix_cache(st);
st->state.fb_orientation = st_fb_orientation(fb);
/**
* Quantize the derived default number of samples:
*
* A query to the driver of supported MSAA values the
* hardware supports is done as to legalize the number
* of application requested samples, NumSamples.
* See commit eb9cf3c for more information.
*/
fb->DefaultGeometry._NumSamples =
framebuffer_quantize_num_samples(st, fb->DefaultGeometry.NumSamples);
framebuffer.width = _mesa_geometric_width(fb);
framebuffer.height = _mesa_geometric_height(fb);
framebuffer.samples = _mesa_geometric_samples(fb);
framebuffer.layers = _mesa_geometric_layers(fb);
/* Examine Mesa's ctx->DrawBuffer->_ColorDrawBuffers state
* to determine which surfaces to draw to
*/
framebuffer.nr_cbufs = fb->_NumColorDrawBuffers;
for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
framebuffer.cbufs[i] = NULL;
strb = st_renderbuffer(fb->_ColorDrawBuffers[i]);
if (strb) {
if (strb->is_rtt || (strb->texture &&
_mesa_get_format_color_encoding(strb->Base.Format) == GL_SRGB)) {
/* rendering to a GL texture, may have to update surface */
st_update_renderbuffer_surface(st, strb);
}
if (strb->surface) {
framebuffer.cbufs[i] = strb->surface;
update_framebuffer_size(&framebuffer, strb->surface);
}
strb->defined = GL_TRUE; /* we'll be drawing something */
}
}
for (i = framebuffer.nr_cbufs; i < PIPE_MAX_COLOR_BUFS; i++) {
framebuffer.cbufs[i] = NULL;
}
/* Remove trailing GL_NONE draw buffers. */
while (framebuffer.nr_cbufs &&
!framebuffer.cbufs[framebuffer.nr_cbufs-1]) {
framebuffer.nr_cbufs--;
}
/*
* Depth/Stencil renderbuffer/surface.
*/
strb = st_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
if (!strb)
strb = st_renderbuffer(fb->Attachment[BUFFER_STENCIL].Renderbuffer);
if (strb) {
if (strb->is_rtt) {
/* rendering to a GL texture, may have to update surface */
st_update_renderbuffer_surface(st, strb);
}
framebuffer.zsbuf = strb->surface;
update_framebuffer_size(&framebuffer, strb->surface);
}
else
framebuffer.zsbuf = NULL;
#ifdef DEBUG
/* Make sure the resource binding flags were set properly */
for (i = 0; i < framebuffer.nr_cbufs; i++) {
assert(!framebuffer.cbufs[i] ||
framebuffer.cbufs[i]->texture->bind & PIPE_BIND_RENDER_TARGET);
}
if (framebuffer.zsbuf) {
assert(framebuffer.zsbuf->texture->bind & PIPE_BIND_DEPTH_STENCIL);
}
#endif
if (framebuffer.width == USHRT_MAX)
framebuffer.width = 0;
if (framebuffer.height == USHRT_MAX)
framebuffer.height = 0;
cso_set_framebuffer(st->cso_context, &framebuffer);
st->state.fb_width = framebuffer.width;
st->state.fb_height = framebuffer.height;
st->state.fb_num_samples = util_framebuffer_get_num_samples(&framebuffer);
st->state.fb_num_layers = util_framebuffer_get_num_layers(&framebuffer);
st->state.fb_num_cb = framebuffer.nr_cbufs;
}
static bool
do_single_blorp_clear(struct brw_context *brw, struct gl_framebuffer *fb,
struct gl_renderbuffer *rb, unsigned buf,
bool partial_clear, bool encode_srgb)
{
struct gl_context *ctx = &brw->ctx;
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
mesa_format format = irb->mt->format;
uint32_t x0, x1, y0, y1;
if (!encode_srgb && _mesa_get_format_color_encoding(format) == GL_SRGB)
format = _mesa_get_srgb_format_linear(format);
x0 = fb->_Xmin;
x1 = fb->_Xmax;
if (rb->Name != 0) {
y0 = fb->_Ymin;
y1 = fb->_Ymax;
} else {
y0 = rb->Height - fb->_Ymax;
y1 = rb->Height - fb->_Ymin;
}
/* If the clear region is empty, just return. */
if (x0 == x1 || y0 == y1)
return true;
bool can_fast_clear = !partial_clear;
bool color_write_disable[4] = { false, false, false, false };
if (set_write_disables(irb, ctx->Color.ColorMask[buf], color_write_disable))
can_fast_clear = false;
if (irb->mt->no_ccs ||
!brw_is_color_fast_clear_compatible(brw, irb->mt, &ctx->Color.ClearColor))
can_fast_clear = false;
const unsigned logical_layer = irb_logical_mt_layer(irb);
const enum intel_fast_clear_state fast_clear_state =
intel_miptree_get_fast_clear_state(irb->mt, irb->mt_level,
logical_layer);
/* Surface state can only record one fast clear color value. Therefore
* unless different levels/layers agree on the color it can be used to
* represent only single level/layer. Here it will be reserved for the
* first slice (level 0, layer 0).
*/
if (irb->layer_count > 1 || irb->mt_level || irb->mt_layer)
can_fast_clear = false;
if (can_fast_clear) {
union gl_color_union override_color =
brw_meta_convert_fast_clear_color(brw, irb->mt,
&ctx->Color.ClearColor);
/* Record the clear color in the miptree so that it will be
* programmed in SURFACE_STATE by later rendering and resolve
* operations.
*/
const bool color_updated = brw_meta_set_fast_clear_color(
brw, &irb->mt->gen9_fast_clear_color,
&override_color);
/* If the buffer is already in INTEL_FAST_CLEAR_STATE_CLEAR, the clear
* is redundant and can be skipped.
*/
if (!color_updated && fast_clear_state == INTEL_FAST_CLEAR_STATE_CLEAR)
return true;
/* If the MCS buffer hasn't been allocated yet, we need to allocate
* it now.
*/
if (!irb->mt->mcs_buf) {
assert(!intel_miptree_is_lossless_compressed(brw, irb->mt));
if (!intel_miptree_alloc_non_msrt_mcs(brw, irb->mt, false)) {
/* MCS allocation failed--probably this will only happen in
* out-of-memory conditions. But in any case, try to recover
* by falling back to a non-blorp clear technique.
*/
return false;
}
}
}
const unsigned num_layers = fb->MaxNumLayers ? irb->layer_count : 1;
/* We can't setup the blorp_surf until we've allocated the MCS above */
struct isl_surf isl_tmp[2];
struct blorp_surf surf;
unsigned level = irb->mt_level;
blorp_surf_for_miptree(brw, &surf, irb->mt, true,
(1 << ISL_AUX_USAGE_MCS) |
(1 << ISL_AUX_USAGE_CCS_E) |
(1 << ISL_AUX_USAGE_CCS_D),
&level, logical_layer, num_layers, isl_tmp);
if (can_fast_clear) {
DBG("%s (fast) to mt %p level %d layers %d+%d\n", __FUNCTION__,
irb->mt, irb->mt_level, irb->mt_layer, num_layers);
struct blorp_batch batch;
blorp_batch_init(&brw->blorp, &batch, brw, 0);
blorp_fast_clear(&batch, &surf,
(enum isl_format)brw->render_target_format[format],
level, logical_layer, num_layers,
x0, y0, x1, y1);
blorp_batch_finish(&batch);
/* Now that the fast clear has occurred, put the buffer in
* INTEL_FAST_CLEAR_STATE_CLEAR so that we won't waste time doing
* redundant clears.
*/
intel_miptree_set_fast_clear_state(brw, irb->mt, irb->mt_level,
logical_layer, num_layers,
INTEL_FAST_CLEAR_STATE_CLEAR);
} else {
DBG("%s (slow) to mt %p level %d layer %d+%d\n", __FUNCTION__,
irb->mt, irb->mt_level, irb->mt_layer, num_layers);
union isl_color_value clear_color;
memcpy(clear_color.f32, ctx->Color.ClearColor.f, sizeof(float) * 4);
struct blorp_batch batch;
blorp_batch_init(&brw->blorp, &batch, brw, 0);
blorp_clear(&batch, &surf,
(enum isl_format)brw->render_target_format[format],
ISL_SWIZZLE_IDENTITY,
level, irb_logical_mt_layer(irb), num_layers,
x0, y0, x1, y1,
clear_color, color_write_disable);
blorp_batch_finish(&batch);
}
return true;
}
static bool
do_single_blorp_clear(struct brw_context *brw, struct gl_framebuffer *fb,
struct gl_renderbuffer *rb, unsigned buf,
bool partial_clear, bool encode_srgb, unsigned layer)
{
struct gl_context *ctx = &brw->ctx;
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
mesa_format format = irb->mt->format;
struct brw_blorp_params params;
brw_blorp_params_init(¶ms);
if (!encode_srgb && _mesa_get_format_color_encoding(format) == GL_SRGB)
format = _mesa_get_srgb_format_linear(format);
brw_blorp_surface_info_init(brw, ¶ms.dst, irb->mt, irb->mt_level,
layer, format, true);
/* Override the surface format according to the context's sRGB rules. */
params.dst.brw_surfaceformat = brw->render_target_format[format];
params.x0 = fb->_Xmin;
params.x1 = fb->_Xmax;
if (rb->Name != 0) {
params.y0 = fb->_Ymin;
params.y1 = fb->_Ymax;
} else {
params.y0 = rb->Height - fb->_Ymax;
params.y1 = rb->Height - fb->_Ymin;
}
memcpy(¶ms.wm_inputs, ctx->Color.ClearColor.f, sizeof(float) * 4);
bool use_simd16_replicated_data = true;
/* From the SNB PRM (Vol4_Part1):
*
* "Replicated data (Message Type = 111) is only supported when
* accessing tiled memory. Using this Message Type to access linear
* (untiled) memory is UNDEFINED."
*/
if (irb->mt->tiling == I915_TILING_NONE)
use_simd16_replicated_data = false;
/* Constant color writes ignore everyting in blend and color calculator
* state. This is not documented.
*/
if (set_write_disables(irb, ctx->Color.ColorMask[buf],
params.color_write_disable))
use_simd16_replicated_data = false;
if (irb->mt->fast_clear_state != INTEL_FAST_CLEAR_STATE_NO_MCS &&
!partial_clear && use_simd16_replicated_data &&
brw_is_color_fast_clear_compatible(brw, irb->mt,
&ctx->Color.ClearColor)) {
memset(¶ms.wm_inputs, 0xff, 4*sizeof(float));
params.fast_clear_op = GEN7_PS_RENDER_TARGET_FAST_CLEAR_ENABLE;
brw_get_fast_clear_rect(brw, fb, irb->mt, ¶ms.x0, ¶ms.y0,
¶ms.x1, ¶ms.y1);
} else {
brw_meta_get_buffer_rect(fb, ¶ms.x0, ¶ms.y0,
¶ms.x1, ¶ms.y1);
}
brw_blorp_params_get_clear_kernel(brw, ¶ms, use_simd16_replicated_data);
const bool is_fast_clear =
params.fast_clear_op == GEN7_PS_RENDER_TARGET_FAST_CLEAR_ENABLE;
if (is_fast_clear) {
/* Record the clear color in the miptree so that it will be
* programmed in SURFACE_STATE by later rendering and resolve
* operations.
*/
const bool color_updated = brw_meta_set_fast_clear_color(
brw, irb->mt, &ctx->Color.ClearColor);
/* If the buffer is already in INTEL_FAST_CLEAR_STATE_CLEAR, the clear
* is redundant and can be skipped.
*/
if (!color_updated &&
irb->mt->fast_clear_state == INTEL_FAST_CLEAR_STATE_CLEAR)
return true;
/* If the MCS buffer hasn't been allocated yet, we need to allocate
* it now.
*/
if (!irb->mt->mcs_mt) {
if (!intel_miptree_alloc_non_msrt_mcs(brw, irb->mt)) {
/* MCS allocation failed--probably this will only happen in
* out-of-memory conditions. But in any case, try to recover
* by falling back to a non-blorp clear technique.
*/
return false;
}
}
}
const char *clear_type;
if (is_fast_clear)
clear_type = "fast";
else if (use_simd16_replicated_data)
clear_type = "replicated";
else
clear_type = "slow";
DBG("%s (%s) to mt %p level %d layer %d\n", __FUNCTION__, clear_type,
irb->mt, irb->mt_level, irb->mt_layer);
brw_blorp_exec(brw, ¶ms);
if (is_fast_clear) {
/* Now that the fast clear has occurred, put the buffer in
* INTEL_FAST_CLEAR_STATE_CLEAR so that we won't waste time doing
* redundant clears.
*/
irb->mt->fast_clear_state = INTEL_FAST_CLEAR_STATE_CLEAR;
} else if (intel_miptree_is_lossless_compressed(brw, irb->mt)) {
/* Compressed buffers can be cleared also using normal rep-clear. In
* such case they bahave such as if they were drawn using normal 3D
* render pipeline, and we simply mark the mcs as dirty.
*/
assert(partial_clear);
irb->mt->fast_clear_state = INTEL_FAST_CLEAR_STATE_UNRESOLVED;
}
return true;
}
/**
* Try to do a color or depth glBlitFramebuffer using texturing.
*
* We can do this when the src renderbuffer is actually a texture, or when the
* driver exposes BindRenderbufferTexImage().
*/
static bool
blitframebuffer_texture(struct gl_context *ctx,
const struct gl_framebuffer *readFb,
const struct gl_framebuffer *drawFb,
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
GLenum filter, GLint flipX, GLint flipY,
GLboolean glsl_version, GLboolean do_depth)
{
int att_index = do_depth ? BUFFER_DEPTH : readFb->_ColorReadBufferIndex;
const struct gl_renderbuffer_attachment *readAtt =
&readFb->Attachment[att_index];
struct blit_state *blit = &ctx->Meta->Blit;
struct fb_tex_blit_state fb_tex_blit;
const GLint dstX = MIN2(dstX0, dstX1);
const GLint dstY = MIN2(dstY0, dstY1);
const GLint dstW = abs(dstX1 - dstX0);
const GLint dstH = abs(dstY1 - dstY0);
const int srcW = abs(srcX1 - srcX0);
const int srcH = abs(srcY1 - srcY0);
bool scaled_blit = false;
struct gl_texture_object *texObj;
GLuint srcLevel;
GLenum target;
struct gl_renderbuffer *rb = readAtt->Renderbuffer;
struct temp_texture *meta_temp_texture;
if (rb->NumSamples && !ctx->Extensions.ARB_texture_multisample)
return false;
_mesa_meta_fb_tex_blit_begin(ctx, &fb_tex_blit);
if (readAtt->Texture &&
(readAtt->Texture->Target == GL_TEXTURE_2D ||
readAtt->Texture->Target == GL_TEXTURE_RECTANGLE ||
readAtt->Texture->Target == GL_TEXTURE_2D_MULTISAMPLE ||
readAtt->Texture->Target == GL_TEXTURE_2D_MULTISAMPLE_ARRAY)) {
/* If there's a texture attached of a type we can handle, then just use
* it directly.
*/
srcLevel = readAtt->TextureLevel;
texObj = readAtt->Texture;
target = texObj->Target;
} else if (!readAtt->Texture && ctx->Driver.BindRenderbufferTexImage) {
if (!_mesa_meta_bind_rb_as_tex_image(ctx, rb, &fb_tex_blit.tempTex,
&texObj, &target))
return false;
srcLevel = 0;
if (_mesa_is_winsys_fbo(readFb)) {
GLint temp = srcY0;
srcY0 = rb->Height - srcY1;
srcY1 = rb->Height - temp;
flipY = -flipY;
}
} else {
GLenum tex_base_format;
/* Fall back to doing a CopyTexSubImage to get the destination
* renderbuffer into a texture.
*/
if (ctx->Meta->Blit.no_ctsi_fallback)
return false;
if (rb->NumSamples > 1)
return false;
if (do_depth) {
meta_temp_texture = _mesa_meta_get_temp_depth_texture(ctx);
tex_base_format = GL_DEPTH_COMPONENT;
} else {
meta_temp_texture = _mesa_meta_get_temp_texture(ctx);
tex_base_format =
_mesa_base_tex_format(ctx, rb->InternalFormat);
}
srcLevel = 0;
target = meta_temp_texture->Target;
texObj = _mesa_lookup_texture(ctx, meta_temp_texture->TexObj);
if (texObj == NULL) {
return false;
}
_mesa_meta_setup_copypix_texture(ctx, meta_temp_texture,
srcX0, srcY0,
srcW, srcH,
tex_base_format,
filter);
srcX0 = 0;
srcY0 = 0;
srcX1 = srcW;
srcY1 = srcH;
}
fb_tex_blit.baseLevelSave = texObj->BaseLevel;
fb_tex_blit.maxLevelSave = texObj->MaxLevel;
fb_tex_blit.stencilSamplingSave = texObj->StencilSampling;
scaled_blit = dstW != srcW || dstH != srcH;
if (glsl_version) {
setup_glsl_blit_framebuffer(ctx, blit, drawFb, rb, target, filter, scaled_blit,
do_depth);
}
else {
_mesa_meta_setup_ff_tnl_for_blit(ctx,
&ctx->Meta->Blit.VAO,
&ctx->Meta->Blit.buf_obj,
2);
}
/*
printf("Blit from texture!\n");
printf(" srcAtt %p dstAtt %p\n", readAtt, drawAtt);
printf(" srcTex %p dstText %p\n", texObj, drawAtt->Texture);
*/
fb_tex_blit.sampler = _mesa_meta_setup_sampler(ctx, texObj, target, filter,
srcLevel);
/* Always do our blits with no net sRGB decode or encode.
*
* However, if both the src and dst can be srgb decode/encoded, enable them
* so that we do any blending (from scaling or from MSAA resolves) in the
* right colorspace.
*
* Our choice of not doing any net encode/decode is from the GL 3.0
* specification:
*
* "Blit operations bypass the fragment pipeline. The only fragment
* operations which affect a blit are the pixel ownership test and the
* scissor test."
*
* The GL 4.4 specification disagrees and says that the sRGB part of the
* fragment pipeline applies, but this was found to break applications.
*/
if (ctx->Extensions.EXT_texture_sRGB_decode) {
if (_mesa_get_format_color_encoding(rb->Format) == GL_SRGB &&
drawFb->Visual.sRGBCapable) {
_mesa_SamplerParameteri(fb_tex_blit.sampler,
GL_TEXTURE_SRGB_DECODE_EXT, GL_DECODE_EXT);
_mesa_set_framebuffer_srgb(ctx, GL_TRUE);
} else {
_mesa_SamplerParameteri(fb_tex_blit.sampler,
GL_TEXTURE_SRGB_DECODE_EXT,
GL_SKIP_DECODE_EXT);
/* set_framebuffer_srgb was set by _mesa_meta_begin(). */
}
}
if (!glsl_version) {
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
_mesa_set_enable(ctx, target, GL_TRUE);
}
/* Prepare vertex data (the VBO was previously created and bound) */
{
struct vertex verts[4];
GLfloat s0, t0, s1, t1;
if (target == GL_TEXTURE_2D) {
const struct gl_texture_image *texImage
= _mesa_select_tex_image(texObj, target, srcLevel);
s0 = srcX0 / (float) texImage->Width;
s1 = srcX1 / (float) texImage->Width;
t0 = srcY0 / (float) texImage->Height;
t1 = srcY1 / (float) texImage->Height;
}
else {
assert(target == GL_TEXTURE_RECTANGLE_ARB ||
target == GL_TEXTURE_2D_MULTISAMPLE ||
target == GL_TEXTURE_2D_MULTISAMPLE_ARRAY);
s0 = (float) srcX0;
s1 = (float) srcX1;
t0 = (float) srcY0;
t1 = (float) srcY1;
}
/* Silence valgrind warnings about reading uninitialized stack. */
memset(verts, 0, sizeof(verts));
/* setup vertex positions */
verts[0].x = -1.0F * flipX;
verts[0].y = -1.0F * flipY;
verts[1].x = 1.0F * flipX;
verts[1].y = -1.0F * flipY;
verts[2].x = 1.0F * flipX;
verts[2].y = 1.0F * flipY;
verts[3].x = -1.0F * flipX;
verts[3].y = 1.0F * flipY;
verts[0].tex[0] = s0;
verts[0].tex[1] = t0;
verts[0].tex[2] = readAtt->Zoffset;
verts[1].tex[0] = s1;
verts[1].tex[1] = t0;
verts[1].tex[2] = readAtt->Zoffset;
verts[2].tex[0] = s1;
verts[2].tex[1] = t1;
verts[2].tex[2] = readAtt->Zoffset;
verts[3].tex[0] = s0;
verts[3].tex[1] = t1;
verts[3].tex[2] = readAtt->Zoffset;
_mesa_buffer_sub_data(ctx, blit->buf_obj, 0, sizeof(verts), verts,
__func__);
}
/* setup viewport */
_mesa_set_viewport(ctx, 0, dstX, dstY, dstW, dstH);
_mesa_ColorMask(!do_depth, !do_depth, !do_depth, !do_depth);
_mesa_set_enable(ctx, GL_DEPTH_TEST, do_depth);
_mesa_DepthMask(do_depth);
_mesa_DepthFunc(GL_ALWAYS);
_mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
_mesa_meta_fb_tex_blit_end(ctx, target, &fb_tex_blit);
return true;
}
static GLboolean
update_single_texture(struct st_context *st,
struct pipe_sampler_view **sampler_view,
GLuint texUnit)
{
struct pipe_context *pipe = st->pipe;
struct gl_context *ctx = st->ctx;
const struct gl_sampler_object *samp;
struct gl_texture_object *texObj;
struct st_texture_object *stObj;
enum pipe_format st_view_format;
GLboolean retval;
samp = _mesa_get_samplerobj(ctx, texUnit);
texObj = ctx->Texture.Unit[texUnit]._Current;
if (!texObj) {
texObj = _mesa_get_fallback_texture(ctx, TEXTURE_2D_INDEX);
samp = &texObj->Sampler;
}
stObj = st_texture_object(texObj);
retval = st_finalize_texture(ctx, st->pipe, texObj);
if (!retval) {
/* out of mem */
return GL_FALSE;
}
/* Determine the format of the texture sampler view */
st_view_format = stObj->pt->format;
{
const struct st_texture_image *firstImage =
st_texture_image(stObj->base.Image[0][stObj->base.BaseLevel]);
const gl_format texFormat = firstImage->base.TexFormat;
enum pipe_format firstImageFormat =
st_mesa_format_to_pipe_format(texFormat);
if ((samp->sRGBDecode == GL_SKIP_DECODE_EXT) &&
(_mesa_get_format_color_encoding(texFormat) == GL_SRGB)) {
/* Don't do sRGB->RGB conversion. Interpret the texture data as
* linear values.
*/
const gl_format linearFormat =
_mesa_get_srgb_format_linear(texFormat);
firstImageFormat = st_mesa_format_to_pipe_format(linearFormat);
}
if (firstImageFormat != stObj->pt->format)
st_view_format = firstImageFormat;
}
/* if sampler view has changed dereference it */
if (stObj->sampler_view) {
if (check_sampler_swizzle(stObj->sampler_view,
stObj->base._Swizzle,
samp->DepthMode) ||
(st_view_format != stObj->sampler_view->format) ||
stObj->base.BaseLevel != stObj->sampler_view->u.tex.first_level) {
pipe_sampler_view_reference(&stObj->sampler_view, NULL);
}
}
*sampler_view = st_get_texture_sampler_view_from_stobj(stObj, pipe,
samp,
st_view_format);
return GL_TRUE;
}
/**
* Check if the call to _mesa_meta_GenerateMipmap() will require a
* software fallback. The fallback path will require that the texture
* images are mapped.
* \return GL_TRUE if a fallback is needed, GL_FALSE otherwise
*/
static bool
fallback_required(struct gl_context *ctx, GLenum target,
struct gl_texture_object *texObj)
{
struct gen_mipmap_state *mipmap = &ctx->Meta->Mipmap;
struct gl_texture_image *baseImage;
GLuint srcLevel;
GLenum status;
/* check for fallbacks */
if (target == GL_TEXTURE_3D) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() to %s target\n",
_mesa_enum_to_string(target));
return true;
}
srcLevel = texObj->BaseLevel;
baseImage = _mesa_select_tex_image(texObj, target, srcLevel);
if (!baseImage) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() couldn't find base teximage\n");
return true;
}
if (_mesa_is_format_compressed(baseImage->TexFormat)) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() with %s format\n",
_mesa_get_format_name(baseImage->TexFormat));
return true;
}
if (_mesa_get_format_color_encoding(baseImage->TexFormat) == GL_SRGB &&
!ctx->Extensions.EXT_texture_sRGB_decode) {
/* The texture format is sRGB but we can't turn off sRGB->linear
* texture sample conversion. So we won't be able to generate the
* right colors when rendering. Need to use a fallback.
*/
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() of sRGB texture without "
"sRGB decode\n");
return true;
}
/*
* Test that we can actually render in the texture's format.
*/
if (mipmap->fb == NULL) {
mipmap->fb = ctx->Driver.NewFramebuffer(ctx, 0xDEADBEEF);
if (mipmap->fb == NULL) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() ran out of memory\n");
return true;
}
}
_mesa_meta_framebuffer_texture_image(ctx, mipmap->fb,
GL_COLOR_ATTACHMENT0, baseImage, 0);
status = _mesa_check_framebuffer_status(ctx, mipmap->fb);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() got incomplete FBO\n");
return true;
}
return false;
}
/**
* Check if the call to _mesa_meta_GenerateMipmap() will require a
* software fallback. The fallback path will require that the texture
* images are mapped.
* \return GL_TRUE if a fallback is needed, GL_FALSE otherwise
*/
static bool
fallback_required(struct gl_context *ctx, GLenum target,
struct gl_texture_object *texObj)
{
const GLuint fboSave = ctx->DrawBuffer->Name;
struct gen_mipmap_state *mipmap = &ctx->Meta->Mipmap;
struct gl_texture_image *baseImage;
GLuint srcLevel;
GLenum status;
/* GL_DRAW_FRAMEBUFFER does not exist in OpenGL ES 1.x, and since
* _mesa_meta_begin hasn't been called yet, we have to work-around API
* difficulties. The whole reason that GL_DRAW_FRAMEBUFFER is used instead
* of GL_FRAMEBUFFER is that the read framebuffer may be different. This
* is moot in OpenGL ES 1.x.
*/
const GLenum fbo_target = ctx->API == API_OPENGLES
? GL_FRAMEBUFFER : GL_DRAW_FRAMEBUFFER;
/* check for fallbacks */
if (target == GL_TEXTURE_3D) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() to %s target\n",
_mesa_enum_to_string(target));
return true;
}
srcLevel = texObj->BaseLevel;
baseImage = _mesa_select_tex_image(texObj, target, srcLevel);
if (!baseImage) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() couldn't find base teximage\n");
return true;
}
if (_mesa_is_format_compressed(baseImage->TexFormat)) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() with %s format\n",
_mesa_get_format_name(baseImage->TexFormat));
return true;
}
if (_mesa_get_format_color_encoding(baseImage->TexFormat) == GL_SRGB &&
!ctx->Extensions.EXT_texture_sRGB_decode) {
/* The texture format is sRGB but we can't turn off sRGB->linear
* texture sample conversion. So we won't be able to generate the
* right colors when rendering. Need to use a fallback.
*/
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() of sRGB texture without "
"sRGB decode\n");
return true;
}
/*
* Test that we can actually render in the texture's format.
*/
if (!mipmap->FBO)
_mesa_GenFramebuffers(1, &mipmap->FBO);
_mesa_BindFramebuffer(fbo_target, mipmap->FBO);
_mesa_meta_bind_fbo_image(fbo_target, GL_COLOR_ATTACHMENT0, baseImage, 0);
status = _mesa_CheckFramebufferStatus(fbo_target);
_mesa_BindFramebuffer(fbo_target, fboSave);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH,
"glGenerateMipmap() got incomplete FBO\n");
return true;
}
return false;
}
/**
* The glGet queries of the framebuffer red/green/blue size, stencil size,
* etc. are satisfied by the fields of ctx->DrawBuffer->Visual. These can
* change depending on the renderbuffer bindings. This function updates
* the given framebuffer's Visual from the current renderbuffer bindings.
*
* This may apply to user-created framebuffers or window system framebuffers.
*
* Also note: ctx->DrawBuffer->Visual.depthBits might not equal
* ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer.DepthBits.
* The former one is used to convert floating point depth values into
* integer Z values.
*/
void
_mesa_update_framebuffer_visual(struct gl_context *ctx,
struct gl_framebuffer *fb)
{
GLuint i;
memset(&fb->Visual, 0, sizeof(fb->Visual));
fb->Visual.rgbMode = GL_TRUE; /* assume this */
#if 0 /* this _might_ be needed */
if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
/* leave visual fields zero'd */
return;
}
#endif
/* find first RGB renderbuffer */
for (i = 0; i < BUFFER_COUNT; i++) {
if (fb->Attachment[i].Renderbuffer) {
const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
const gl_format fmt = rb->Format;
if (_mesa_is_legal_color_format(ctx, baseFormat)) {
fb->Visual.redBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
fb->Visual.greenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
fb->Visual.blueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
fb->Visual.alphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
fb->Visual.rgbBits = fb->Visual.redBits
+ fb->Visual.greenBits + fb->Visual.blueBits;
fb->Visual.samples = rb->NumSamples;
fb->Visual.sampleBuffers = rb->NumSamples > 0 ? 1 : 0;
if (_mesa_get_format_color_encoding(fmt) == GL_SRGB)
fb->Visual.sRGBCapable = ctx->Const.sRGBCapable;
break;
}
}
}
fb->Visual.floatMode = GL_FALSE;
for (i = 0; i < BUFFER_COUNT; i++) {
if (fb->Attachment[i].Renderbuffer) {
const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
const gl_format fmt = rb->Format;
if (_mesa_get_format_datatype(fmt) == GL_FLOAT) {
fb->Visual.floatMode = GL_TRUE;
break;
}
}
}
if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_DEPTH].Renderbuffer;
const gl_format fmt = rb->Format;
fb->Visual.haveDepthBuffer = GL_TRUE;
fb->Visual.depthBits = _mesa_get_format_bits(fmt, GL_DEPTH_BITS);
}
if (fb->Attachment[BUFFER_STENCIL].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_STENCIL].Renderbuffer;
const gl_format fmt = rb->Format;
fb->Visual.haveStencilBuffer = GL_TRUE;
fb->Visual.stencilBits = _mesa_get_format_bits(fmt, GL_STENCIL_BITS);
}
if (fb->Attachment[BUFFER_ACCUM].Renderbuffer) {
const struct gl_renderbuffer *rb =
fb->Attachment[BUFFER_ACCUM].Renderbuffer;
const gl_format fmt = rb->Format;
fb->Visual.haveAccumBuffer = GL_TRUE;
fb->Visual.accumRedBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
fb->Visual.accumGreenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
fb->Visual.accumBlueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
fb->Visual.accumAlphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
}
compute_depth_max(fb);
}
/**
* This is the software fallback for Driver.GetTexImage().
* All error checking will have been done before this routine is called.
* The texture image must be mapped.
*/
void
_mesa_get_teximage(GLcontext *ctx, GLenum target, GLint level,
GLenum format, GLenum type, GLvoid *pixels,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage)
{
GLuint dimensions;
/* If we get here, the texture image should be mapped */
assert(texImage->Data);
switch (target) {
case GL_TEXTURE_1D:
dimensions = 1;
break;
case GL_TEXTURE_3D:
dimensions = 3;
break;
default:
dimensions = 2;
}
if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
/* Packing texture image into a PBO.
* Map the (potentially) VRAM-based buffer into our process space so
* we can write into it with the code below.
* A hardware driver might use a sophisticated blit to move the
* texture data to the PBO if the PBO is in VRAM along with the texture.
*/
GLubyte *buf = (GLubyte *)
ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj);
if (!buf) {
/* out of memory or other unexpected error */
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage(map PBO failed)");
return;
}
/* <pixels> was an offset into the PBO.
* Now make it a real, client-side pointer inside the mapped region.
*/
pixels = ADD_POINTERS(buf, pixels);
}
if (get_tex_memcpy(ctx, format, type, pixels, texObj, texImage)) {
/* all done */
}
else if (format == GL_COLOR_INDEX) {
get_tex_color_index(ctx, dimensions, format, type, pixels, texImage);
}
else if (format == GL_DEPTH_COMPONENT) {
get_tex_depth(ctx, dimensions, format, type, pixels, texImage);
}
else if (format == GL_DEPTH_STENCIL_EXT) {
get_tex_depth_stencil(ctx, dimensions, format, type, pixels, texImage);
}
else if (format == GL_YCBCR_MESA) {
get_tex_ycbcr(ctx, dimensions, format, type, pixels, texImage);
}
else if (_mesa_get_format_color_encoding(texImage->TexFormat) == GL_SRGB) {
get_tex_srgb(ctx, dimensions, format, type, pixels, texImage);
}
else {
get_tex_rgba(ctx, dimensions, format, type, pixels, texImage);
}
if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
ctx->Pack.BufferObj);
}
}
