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|
/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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 "main/enums.h"
#include "main/imports.h"
#include "main/macros.h"
#include "main/mfeatures.h"
#include "main/mtypes.h"
#include "main/fbobject.h"
#include "main/framebuffer.h"
#include "main/renderbuffer.h"
#include "main/context.h"
#include "main/teximage.h"
#include "main/image.h"
#include "swrast/swrast.h"
#include "drivers/common/meta.h"
#include "intel_context.h"
#include "intel_batchbuffer.h"
#include "intel_buffers.h"
#include "intel_blit.h"
#include "intel_fbo.h"
#include "intel_mipmap_tree.h"
#include "intel_regions.h"
#include "intel_tex.h"
#include "intel_span.h"
#ifndef I915
#include "brw_context.h"
#endif
#define FILE_DEBUG_FLAG DEBUG_FBO
static struct gl_renderbuffer *
intel_new_renderbuffer(struct gl_context * ctx, GLuint name);
struct intel_region*
intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex)
{
struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, attIndex);
if (irb && irb->mt) {
if (attIndex == BUFFER_STENCIL && irb->mt->stencil_mt)
return irb->mt->stencil_mt->region;
else
return irb->mt->region;
} else
return NULL;
}
/**
* Create a new framebuffer object.
*/
static struct gl_framebuffer *
intel_new_framebuffer(struct gl_context * ctx, GLuint name)
{
/* Only drawable state in intel_framebuffer at this time, just use Mesa's
* class
*/
return _mesa_new_framebuffer(ctx, name);
}
/** Called by gl_renderbuffer::Delete() */
static void
intel_delete_renderbuffer(struct gl_context *ctx, struct gl_renderbuffer *rb)
{
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
ASSERT(irb);
intel_miptree_release(&irb->mt);
_mesa_delete_renderbuffer(ctx, rb);
}
/**
* \see dd_function_table::MapRenderbuffer
*/
static void
intel_map_renderbuffer(struct gl_context *ctx,
struct gl_renderbuffer *rb,
GLuint x, GLuint y, GLuint w, GLuint h,
GLbitfield mode,
GLubyte **out_map,
GLint *out_stride)
{
struct intel_context *intel = intel_context(ctx);
struct swrast_renderbuffer *srb = (struct swrast_renderbuffer *)rb;
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
void *map;
int stride;
if (srb->Buffer) {
/* this is a malloc'd renderbuffer (accum buffer), not an irb */
GLint bpp = _mesa_get_format_bytes(rb->Format);
GLint rowStride = srb->RowStride;
*out_map = (GLubyte *) srb->Buffer + y * rowStride + x * bpp;
*out_stride = rowStride;
return;
}
/* We sometimes get called with this by our intel_span.c usage. */
if (!irb->mt) {
*out_map = NULL;
*out_stride = 0;
return;
}
/* For a window-system renderbuffer, we need to flip the mapping we receive
* upside-down. So we need to ask for a rectangle on flipped vertically, and
* we then return a pointer to the bottom of it with a negative stride.
*/
if (rb->Name == 0) {
y = rb->Height - y - h;
}
intel_miptree_map(intel, irb->mt, irb->mt_level, irb->mt_layer,
x, y, w, h, mode, &map, &stride);
if (rb->Name == 0) {
map += (h - 1) * stride;
stride = -stride;
}
DBG("%s: rb %d (%s) mt mapped: (%d, %d) (%dx%d) -> %p/%d\n",
__FUNCTION__, rb->Name, _mesa_get_format_name(rb->Format),
x, y, w, h, map, stride);
*out_map = map;
*out_stride = stride;
}
/**
* \see dd_function_table::UnmapRenderbuffer
*/
static void
intel_unmap_renderbuffer(struct gl_context *ctx,
struct gl_renderbuffer *rb)
{
struct intel_context *intel = intel_context(ctx);
struct swrast_renderbuffer *srb = (struct swrast_renderbuffer *)rb;
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
DBG("%s: rb %d (%s)\n", __FUNCTION__,
rb->Name, _mesa_get_format_name(rb->Format));
if (srb->Buffer) {
/* this is a malloc'd renderbuffer (accum buffer) */
/* nothing to do */
return;
}
intel_miptree_unmap(intel, irb->mt, irb->mt_level, irb->mt_layer);
}
/**
* Round up the requested multisample count to the next supported sample size.
*/
unsigned
intel_quantize_num_samples(struct intel_screen *intel, unsigned num_samples)
{
switch (intel->gen) {
case 6:
/* Gen6 supports only 4x multisampling. */
if (num_samples > 0)
return 4;
else
return 0;
case 7:
/* Gen7 supports 4x and 8x multisampling. */
if (num_samples > 4)
return 8;
else if (num_samples > 0)
return 4;
else
return 0;
return 0;
default:
/* MSAA unsupported. */
return 0;
}
}
/**
* Called via glRenderbufferStorageEXT() to set the format and allocate
* storage for a user-created renderbuffer.
*/
static GLboolean
intel_alloc_renderbuffer_storage(struct gl_context * ctx, struct gl_renderbuffer *rb,
GLenum internalFormat,
GLuint width, GLuint height)
{
struct intel_context *intel = intel_context(ctx);
struct intel_screen *screen = intel->intelScreen;
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
rb->NumSamples = intel_quantize_num_samples(screen, rb->NumSamples);
switch (internalFormat) {
default:
/* Use the same format-choice logic as for textures.
* Renderbuffers aren't any different from textures for us,
* except they're less useful because you can't texture with
* them.
*/
rb->Format = intel->ctx.Driver.ChooseTextureFormat(ctx, GL_TEXTURE_2D,
internalFormat,
GL_NONE, GL_NONE);
break;
case GL_STENCIL_INDEX:
case GL_STENCIL_INDEX1_EXT:
case GL_STENCIL_INDEX4_EXT:
case GL_STENCIL_INDEX8_EXT:
case GL_STENCIL_INDEX16_EXT:
/* These aren't actual texture formats, so force them here. */
if (intel->has_separate_stencil) {
rb->Format = MESA_FORMAT_S8;
} else {
assert(!intel->must_use_separate_stencil);
rb->Format = MESA_FORMAT_S8_Z24;
}
break;
}
rb->Width = width;
rb->Height = height;
rb->_BaseFormat = _mesa_base_fbo_format(ctx, internalFormat);
intel_miptree_release(&irb->mt);
DBG("%s: %s: %s (%dx%d)\n", __FUNCTION__,
_mesa_lookup_enum_by_nr(internalFormat),
_mesa_get_format_name(rb->Format), width, height);
if (width == 0 || height == 0)
return true;
irb->mt = intel_miptree_create_for_renderbuffer(intel, rb->Format,
width, height,
rb->NumSamples);
if (!irb->mt)
return false;
return true;
}
static void
intel_image_target_renderbuffer_storage(struct gl_context *ctx,
struct gl_renderbuffer *rb,
void *image_handle)
{
struct intel_context *intel = intel_context(ctx);
struct intel_renderbuffer *irb;
__DRIscreen *screen;
__DRIimage *image;
screen = intel->intelScreen->driScrnPriv;
image = screen->dri2.image->lookupEGLImage(screen, image_handle,
screen->loaderPrivate);
if (image == NULL)
return;
/* __DRIimage is opaque to the core so it has to be checked here */
switch (image->format) {
case MESA_FORMAT_RGBA8888_REV:
_mesa_error(&intel->ctx, GL_INVALID_OPERATION,
"glEGLImageTargetRenderbufferStorage(unsupported image format");
return;
break;
default:
break;
}
irb = intel_renderbuffer(rb);
intel_miptree_release(&irb->mt);
irb->mt = intel_miptree_create_for_region(intel,
GL_TEXTURE_2D,
image->format,
image->region);
if (!irb->mt)
return;
rb->InternalFormat = image->internal_format;
rb->Width = image->region->width;
rb->Height = image->region->height;
rb->Format = image->format;
rb->_BaseFormat = _mesa_base_fbo_format(&intel->ctx,
image->internal_format);
}
/**
* Called for each hardware renderbuffer when a _window_ is resized.
* Just update fields.
* Not used for user-created renderbuffers!
*/
static GLboolean
intel_alloc_window_storage(struct gl_context * ctx, struct gl_renderbuffer *rb,
GLenum internalFormat, GLuint width, GLuint height)
{
ASSERT(rb->Name == 0);
rb->Width = width;
rb->Height = height;
rb->InternalFormat = internalFormat;
return true;
}
static void
intel_resize_buffers(struct gl_context *ctx, struct gl_framebuffer *fb,
GLuint width, GLuint height)
{
int i;
_mesa_resize_framebuffer(ctx, fb, width, height);
fb->Initialized = true; /* XXX remove someday */
if (_mesa_is_user_fbo(fb)) {
return;
}
/* Make sure all window system renderbuffers are up to date */
for (i = BUFFER_FRONT_LEFT; i <= BUFFER_BACK_RIGHT; i++) {
struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
/* only resize if size is changing */
if (rb && (rb->Width != width || rb->Height != height)) {
rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height);
}
}
}
/** Dummy function for gl_renderbuffer::AllocStorage() */
static GLboolean
intel_nop_alloc_storage(struct gl_context * ctx, struct gl_renderbuffer *rb,
GLenum internalFormat, GLuint width, GLuint height)
{
_mesa_problem(ctx, "intel_op_alloc_storage should never be called.");
return false;
}
/**
* Create a new intel_renderbuffer which corresponds to an on-screen window,
* not a user-created renderbuffer.
*
* \param num_samples must be quantized.
*/
struct intel_renderbuffer *
intel_create_renderbuffer(gl_format format, unsigned num_samples)
{
struct intel_renderbuffer *irb;
struct gl_renderbuffer *rb;
GET_CURRENT_CONTEXT(ctx);
irb = CALLOC_STRUCT(intel_renderbuffer);
if (!irb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "creating renderbuffer");
return NULL;
}
rb = &irb->Base.Base;
_mesa_init_renderbuffer(rb, 0);
rb->ClassID = INTEL_RB_CLASS;
rb->_BaseFormat = _mesa_get_format_base_format(format);
rb->Format = format;
rb->InternalFormat = rb->_BaseFormat;
rb->NumSamples = num_samples;
/* intel-specific methods */
rb->Delete = intel_delete_renderbuffer;
rb->AllocStorage = intel_alloc_window_storage;
return irb;
}
/**
* Private window-system buffers (as opposed to ones shared with the display
* server created with intel_create_renderbuffer()) are most similar in their
* handling to user-created renderbuffers, but they have a resize handler that
* may be called at intel_update_renderbuffers() time.
*
* \param num_samples must be quantized.
*/
struct intel_renderbuffer *
intel_create_private_renderbuffer(gl_format format, unsigned num_samples)
{
struct intel_renderbuffer *irb;
irb = intel_create_renderbuffer(format, num_samples);
irb->Base.Base.AllocStorage = intel_alloc_renderbuffer_storage;
return irb;
}
/**
* Create a new renderbuffer object.
* Typically called via glBindRenderbufferEXT().
*/
static struct gl_renderbuffer *
intel_new_renderbuffer(struct gl_context * ctx, GLuint name)
{
/*struct intel_context *intel = intel_context(ctx); */
struct intel_renderbuffer *irb;
struct gl_renderbuffer *rb;
irb = CALLOC_STRUCT(intel_renderbuffer);
if (!irb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "creating renderbuffer");
return NULL;
}
rb = &irb->Base.Base;
_mesa_init_renderbuffer(rb, name);
rb->ClassID = INTEL_RB_CLASS;
/* intel-specific methods */
rb->Delete = intel_delete_renderbuffer;
rb->AllocStorage = intel_alloc_renderbuffer_storage;
/* span routines set in alloc_storage function */
return rb;
}
/**
* Called via glBindFramebufferEXT().
*/
static void
intel_bind_framebuffer(struct gl_context * ctx, GLenum target,
struct gl_framebuffer *fb, struct gl_framebuffer *fbread)
{
if (target == GL_FRAMEBUFFER_EXT || target == GL_DRAW_FRAMEBUFFER_EXT) {
intel_draw_buffer(ctx);
}
else {
/* don't need to do anything if target == GL_READ_FRAMEBUFFER_EXT */
}
}
/**
* Called via glFramebufferRenderbufferEXT().
*/
static void
intel_framebuffer_renderbuffer(struct gl_context * ctx,
struct gl_framebuffer *fb,
GLenum attachment, struct gl_renderbuffer *rb)
{
DBG("Intel FramebufferRenderbuffer %u %u\n", fb->Name, rb ? rb->Name : 0);
_mesa_framebuffer_renderbuffer(ctx, fb, attachment, rb);
intel_draw_buffer(ctx);
}
static bool
intel_renderbuffer_update_wrapper(struct intel_context *intel,
struct intel_renderbuffer *irb,
struct gl_texture_image *image,
uint32_t layer)
{
struct gl_renderbuffer *rb = &irb->Base.Base;
struct intel_texture_image *intel_image = intel_texture_image(image);
struct intel_mipmap_tree *mt = intel_image->mt;
int level = image->Level;
rb->Format = image->TexFormat;
rb->InternalFormat = image->InternalFormat;
rb->_BaseFormat = image->_BaseFormat;
rb->NumSamples = mt->num_samples;
if (mt->msaa_layout != INTEL_MSAA_LAYOUT_NONE) {
assert(level == 0);
rb->Width = mt->logical_width0;
rb->Height = mt->logical_height0;
}
else {
rb->Width = mt->level[level].width;
rb->Height = mt->level[level].height;
}
rb->Delete = intel_delete_renderbuffer;
rb->AllocStorage = intel_nop_alloc_storage;
intel_miptree_check_level_layer(mt, level, layer);
irb->mt_level = level;
switch (mt->msaa_layout) {
case INTEL_MSAA_LAYOUT_UMS:
case INTEL_MSAA_LAYOUT_CMS:
irb->mt_layer = layer * mt->num_samples;
break;
default:
irb->mt_layer = layer;
}
intel_miptree_reference(&irb->mt, mt);
intel_renderbuffer_set_draw_offset(irb);
if (mt->hiz_mt == NULL &&
intel->vtbl.is_hiz_depth_format(intel, rb->Format)) {
intel_miptree_alloc_hiz(intel, mt, 0 /* num_samples */);
if (!mt->hiz_mt)
return false;
}
return true;
}
/**
* Create a fake intel_renderbuffer that wraps a gl_texture_image.
*/
struct intel_renderbuffer *
intel_create_fake_renderbuffer_wrapper(struct intel_context *intel,
struct gl_texture_image *image)
{
struct gl_context *ctx = &intel->ctx;
struct intel_renderbuffer *irb;
struct gl_renderbuffer *rb;
irb = CALLOC_STRUCT(intel_renderbuffer);
if (!irb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "creating renderbuffer");
return NULL;
}
rb = &irb->Base.Base;
_mesa_init_renderbuffer(rb, 0);
rb->ClassID = INTEL_RB_CLASS;
if (!intel_renderbuffer_update_wrapper(intel, irb, image, image->Face)) {
intel_delete_renderbuffer(ctx, rb);
return NULL;
}
return irb;
}
void
intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb)
{
unsigned int dst_x, dst_y;
/* compute offset of the particular 2D image within the texture region */
intel_miptree_get_image_offset(irb->mt,
irb->mt_level,
irb->mt_layer,
&dst_x, &dst_y);
irb->draw_x = dst_x;
irb->draw_y = dst_y;
}
/**
* Rendering to tiled buffers requires that the base address of the
* buffer be aligned to a page boundary. We generally render to
* textures by pointing the surface at the mipmap image level, which
* may not be aligned to a tile boundary.
*
* This function returns an appropriately-aligned base offset
* according to the tiling restrictions, plus any required x/y offset
* from there.
*/
uint32_t
intel_renderbuffer_tile_offsets(struct intel_renderbuffer *irb,
uint32_t *tile_x,
uint32_t *tile_y)
{
struct intel_region *region = irb->mt->region;
uint32_t mask_x, mask_y;
intel_region_get_tile_masks(region, &mask_x, &mask_y, false);
*tile_x = irb->draw_x & mask_x;
*tile_y = irb->draw_y & mask_y;
return intel_region_get_aligned_offset(region, irb->draw_x & ~mask_x,
irb->draw_y & ~mask_y, false);
}
/**
* Called by glFramebufferTexture[123]DEXT() (and other places) to
* prepare for rendering into texture memory. This might be called
* many times to choose different texture levels, cube faces, etc
* before intel_finish_render_texture() is ever called.
*/
static void
intel_render_texture(struct gl_context * ctx,
struct gl_framebuffer *fb,
struct gl_renderbuffer_attachment *att)
{
struct intel_context *intel = intel_context(ctx);
struct gl_texture_image *image = _mesa_get_attachment_teximage(att);
struct intel_renderbuffer *irb = intel_renderbuffer(att->Renderbuffer);
struct intel_texture_image *intel_image = intel_texture_image(image);
struct intel_mipmap_tree *mt = intel_image->mt;
int layer;
(void) fb;
if (att->CubeMapFace > 0) {
assert(att->Zoffset == 0);
layer = att->CubeMapFace;
} else {
layer = att->Zoffset;
}
if (!intel_image->mt) {
/* Fallback on drawing to a texture that doesn't have a miptree
* (has a border, width/height 0, etc.)
*/
_mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
_swrast_render_texture(ctx, fb, att);
return;
}
else if (!irb) {
intel_miptree_check_level_layer(mt, att->TextureLevel, layer);
irb = (struct intel_renderbuffer *)intel_new_renderbuffer(ctx, ~0);
if (irb) {
/* bind the wrapper to the attachment point */
_mesa_reference_renderbuffer(&att->Renderbuffer, &irb->Base.Base);
}
else {
/* fallback to software rendering */
_swrast_render_texture(ctx, fb, att);
return;
}
}
if (!intel_renderbuffer_update_wrapper(intel, irb, image, layer)) {
_mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
_swrast_render_texture(ctx, fb, att);
return;
}
irb->tex_image = image;
DBG("Begin render %s texture tex=%u w=%d h=%d refcount=%d\n",
_mesa_get_format_name(image->TexFormat),
att->Texture->Name, image->Width, image->Height,
irb->Base.Base.RefCount);
/* update drawing region, etc */
intel_draw_buffer(ctx);
}
/**
* Called by Mesa when rendering to a texture is done.
*/
static void
intel_finish_render_texture(struct gl_context * ctx,
struct gl_renderbuffer_attachment *att)
{
struct intel_context *intel = intel_context(ctx);
struct gl_texture_object *tex_obj = att->Texture;
struct gl_texture_image *image =
tex_obj->Image[att->CubeMapFace][att->TextureLevel];
struct intel_renderbuffer *irb = intel_renderbuffer(att->Renderbuffer);
DBG("Finish render %s texture tex=%u\n",
_mesa_get_format_name(image->TexFormat), att->Texture->Name);
if (irb)
irb->tex_image = NULL;
/* Since we've (probably) rendered to the texture and will (likely) use
* it in the texture domain later on in this batchbuffer, flush the
* batch. Once again, we wish for a domain tracker in libdrm to cover
* usage inside of a batchbuffer like GEM does in the kernel.
*/
intel_batchbuffer_emit_mi_flush(intel);
}
/**
* Do additional "completeness" testing of a framebuffer object.
*/
static void
intel_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
{
struct intel_context *intel = intel_context(ctx);
const struct intel_renderbuffer *depthRb =
intel_get_renderbuffer(fb, BUFFER_DEPTH);
const struct intel_renderbuffer *stencilRb =
intel_get_renderbuffer(fb, BUFFER_STENCIL);
struct intel_mipmap_tree *depth_mt = NULL, *stencil_mt = NULL;
int i;
DBG("%s() on fb %p (%s)\n", __FUNCTION__,
fb, (fb == ctx->DrawBuffer ? "drawbuffer" :
(fb == ctx->ReadBuffer ? "readbuffer" : "other buffer")));
if (depthRb)
depth_mt = depthRb->mt;
if (stencilRb) {
stencil_mt = stencilRb->mt;
if (stencil_mt->stencil_mt)
stencil_mt = stencil_mt->stencil_mt;
}
if (depth_mt && stencil_mt) {
if (depth_mt == stencil_mt) {
/* For true packed depth/stencil (not faked on prefers-separate-stencil
* hardware) we need to be sure they're the same level/layer, since
* we'll be emitting a single packet describing the packed setup.
*/
if (depthRb->mt_level != stencilRb->mt_level ||
depthRb->mt_layer != stencilRb->mt_layer) {
DBG("depth image level/layer %d/%d != stencil image %d/%d\n",
depthRb->mt_level,
depthRb->mt_layer,
stencilRb->mt_level,
stencilRb->mt_layer);
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
}
} else {
if (!intel->has_separate_stencil) {
DBG("separate stencil unsupported\n");
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
}
if (stencil_mt->format != MESA_FORMAT_S8) {
DBG("separate stencil is %s instead of S8\n",
_mesa_get_format_name(stencil_mt->format));
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
}
if (intel->gen < 7 && depth_mt->hiz_mt == NULL) {
/* Before Gen7, separate depth and stencil buffers can be used
* only if HiZ is enabled. From the Sandybridge PRM, Volume 2,
* Part 1, Bit 3DSTATE_DEPTH_BUFFER.SeparateStencilBufferEnable:
* [DevSNB]: This field must be set to the same value (enabled
* or disabled) as Hierarchical Depth Buffer Enable.
*/
DBG("separate stencil without HiZ\n");
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
}
}
}
for (i = 0; i < Elements(fb->Attachment); i++) {
struct gl_renderbuffer *rb;
struct intel_renderbuffer *irb;
if (fb->Attachment[i].Type == GL_NONE)
continue;
/* A supported attachment will have a Renderbuffer set either
* from being a Renderbuffer or being a texture that got the
* intel_wrap_texture() treatment.
*/
rb = fb->Attachment[i].Renderbuffer;
if (rb == NULL) {
DBG("attachment without renderbuffer\n");
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
continue;
}
if (fb->Attachment[i].Type == GL_TEXTURE) {
const struct gl_texture_image *img =
_mesa_get_attachment_teximage_const(&fb->Attachment[i]);
if (img->Border) {
DBG("texture with border\n");
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
continue;
}
}
irb = intel_renderbuffer(rb);
if (irb == NULL) {
DBG("software rendering renderbuffer\n");
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
continue;
}
if (!intel->vtbl.render_target_supported(intel, rb)) {
DBG("Unsupported HW texture/renderbuffer format attached: %s\n",
_mesa_get_format_name(intel_rb_format(irb)));
fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
}
}
}
/**
* Try to do a glBlitFramebuffer using glCopyTexSubImage2D
* We can do this when the dst renderbuffer is actually a texture and
* there is no scaling, mirroring or scissoring.
*
* \return new buffer mask indicating the buffers left to blit using the
* normal path.
*/
static GLbitfield
intel_blit_framebuffer_copy_tex_sub_image(struct gl_context *ctx,
GLint srcX0, GLint srcY0,
GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0,
GLint dstX1, GLint dstY1,
GLbitfield mask, GLenum filter)
{
if (mask & GL_COLOR_BUFFER_BIT) {
GLint i;
const struct gl_framebuffer *drawFb = ctx->DrawBuffer;
const struct gl_framebuffer *readFb = ctx->ReadBuffer;
const struct gl_renderbuffer_attachment *drawAtt;
struct intel_renderbuffer *srcRb =
intel_renderbuffer(readFb->_ColorReadBuffer);
/* If the source and destination are the same size with no mirroring,
* the rectangles are within the size of the texture and there is no
* scissor then we can use glCopyTexSubimage2D to implement the blit.
* This will end up as a fast hardware blit on some drivers.
*/
const GLboolean use_intel_copy_texsubimage =
srcX0 - srcX1 == dstX0 - dstX1 &&
srcY0 - srcY1 == dstY0 - dstY1 &&
srcX1 >= srcX0 &&
srcY1 >= srcY0 &&
srcX0 >= 0 && srcX1 <= readFb->Width &&
srcY0 >= 0 && srcY1 <= readFb->Height &&
dstX0 >= 0 && dstX1 <= drawFb->Width &&
dstY0 >= 0 && dstY1 <= drawFb->Height &&
!ctx->Scissor.Enabled;
/* Verify that all the draw buffers can be blitted using
* intel_copy_texsubimage().
*/
for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
int idx = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
if (idx == -1)
continue;
drawAtt = &drawFb->Attachment[idx];
if (srcRb && drawAtt && drawAtt->Texture &&
use_intel_copy_texsubimage)
continue;
else
return mask;
}
/* Blit to all active draw buffers */
for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
int idx = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
if (idx == -1)
continue;
drawAtt = &drawFb->Attachment[idx];
{
const struct gl_texture_object *texObj = drawAtt->Texture;
const GLuint dstLevel = drawAtt->TextureLevel;
const GLenum target = texObj->Target;
struct gl_texture_image *texImage =
_mesa_select_tex_image(ctx, texObj, target, dstLevel);
if (!intel_copy_texsubimage(intel_context(ctx),
intel_texture_image(texImage),
dstX0, dstY0,
srcRb,
srcX0, srcY0,
srcX1 - srcX0, /* width */
srcY1 - srcY0))
return mask;
}
}
mask &= ~GL_COLOR_BUFFER_BIT;
}
return mask;
}
static void
intel_blit_framebuffer(struct gl_context *ctx,
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
GLbitfield mask, GLenum filter)
{
/* Try faster, glCopyTexSubImage2D approach first which uses the BLT. */
mask = intel_blit_framebuffer_copy_tex_sub_image(ctx,
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
mask, filter);
if (mask == 0x0)
return;
#ifndef I915
mask = brw_blorp_framebuffer(intel_context(ctx),
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
mask, filter);
if (mask == 0x0)
return;
#endif
_mesa_meta_BlitFramebuffer(ctx,
srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1,
mask, filter);
}
/**
* This is a no-op except on multisample buffers shared with DRI2.
*/
void
intel_renderbuffer_set_needs_downsample(struct intel_renderbuffer *irb)
{
if (irb->mt && irb->mt->singlesample_mt)
irb->mt->need_downsample = true;
}
void
intel_renderbuffer_set_needs_hiz_resolve(struct intel_renderbuffer *irb)
{
if (irb->mt) {
intel_miptree_slice_set_needs_hiz_resolve(irb->mt,
irb->mt_level,
irb->mt_layer);
}
}
void
intel_renderbuffer_set_needs_depth_resolve(struct intel_renderbuffer *irb)
{
if (irb->mt) {
intel_miptree_slice_set_needs_depth_resolve(irb->mt,
irb->mt_level,
irb->mt_layer);
}
}
bool
intel_renderbuffer_resolve_hiz(struct intel_context *intel,
struct intel_renderbuffer *irb)
{
if (irb->mt)
return intel_miptree_slice_resolve_hiz(intel,
irb->mt,
irb->mt_level,
irb->mt_layer);
return false;
}
bool
intel_renderbuffer_resolve_depth(struct intel_context *intel,
struct intel_renderbuffer *irb)
{
if (irb->mt)
return intel_miptree_slice_resolve_depth(intel,
irb->mt,
irb->mt_level,
irb->mt_layer);
return false;
}
void
intel_renderbuffer_move_to_temp(struct intel_context *intel,
struct intel_renderbuffer *irb,
bool invalidate)
{
struct intel_texture_image *intel_image =
intel_texture_image(irb->tex_image);
struct intel_mipmap_tree *new_mt;
int width, height, depth;
intel_miptree_get_dimensions_for_image(irb->tex_image, &width, &height, &depth);
new_mt = intel_miptree_create(intel, irb->tex_image->TexObject->Target,
intel_image->base.Base.TexFormat,
intel_image->base.Base.Level,
intel_image->base.Base.Level,
width, height, depth,
true,
irb->mt->num_samples,
false /* force_y_tiling */);
intel_miptree_copy_teximage(intel, intel_image, new_mt, invalidate);
intel_miptree_reference(&irb->mt, intel_image->mt);
intel_renderbuffer_set_draw_offset(irb);
intel_miptree_release(&new_mt);
}
/**
* Do one-time context initializations related to GL_EXT_framebuffer_object.
* Hook in device driver functions.
*/
void
intel_fbo_init(struct intel_context *intel)
{
intel->ctx.Driver.NewFramebuffer = intel_new_framebuffer;
intel->ctx.Driver.NewRenderbuffer = intel_new_renderbuffer;
intel->ctx.Driver.MapRenderbuffer = intel_map_renderbuffer;
intel->ctx.Driver.UnmapRenderbuffer = intel_unmap_renderbuffer;
intel->ctx.Driver.BindFramebuffer = intel_bind_framebuffer;
intel->ctx.Driver.FramebufferRenderbuffer = intel_framebuffer_renderbuffer;
intel->ctx.Driver.RenderTexture = intel_render_texture;
intel->ctx.Driver.FinishRenderTexture = intel_finish_render_texture;
intel->ctx.Driver.ResizeBuffers = intel_resize_buffers;
intel->ctx.Driver.ValidateFramebuffer = intel_validate_framebuffer;
intel->ctx.Driver.BlitFramebuffer = intel_blit_framebuffer;
intel->ctx.Driver.EGLImageTargetRenderbufferStorage =
intel_image_target_renderbuffer_storage;
}
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