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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/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"

#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)

      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;

   }

   intel_prepare_render(intel);

   /* 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);

}

/**

 * 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_renderbuffer *irb = intel_renderbuffer(rb);

   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. */

      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);

   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_bo(intel,

                                         image->region->bo,

                                         image->format,

                                         image->offset,

                                         image->region->width,

                                         image->region->height,

                                         image->region->pitch,

                                         image->region->tiling);

   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);

   rb->NeedsFinishRenderTexture = true;

}

/**

 * Called by _mesa_resize_framebuffer() for each hardware renderbuffer when a

 * window system framebuffer is resized.

 *

 * Any actual buffer reallocations for hardware renderbuffers (which would

 * have triggered _mesa_resize_framebuffer()) were done by

 * intel_process_dri2_buffer().

 */

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;

}

/** 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.

 */

struct intel_renderbuffer *

intel_create_renderbuffer(gl_format format)

{

   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;

   /* 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.

 */

struct intel_renderbuffer *

intel_create_private_renderbuffer(gl_format format)

{

   struct intel_renderbuffer *irb;

   irb = intel_create_renderbuffer(format);

   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->Depth = image->Depth;

   rb->AllocStorage = intel_nop_alloc_storage;

   intel_miptree_check_level_layer(mt, level, layer);

   irb->mt_level = level;

   irb->mt_layer = layer;

   intel_miptree_reference(&irb->mt, mt);

   intel_renderbuffer_set_draw_offset(irb);

   return true;

}

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;

}

/**

 * 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_renderbuffer *rb = att->Renderbuffer;

   struct intel_renderbuffer *irb = intel_renderbuffer(rb);

   struct gl_texture_image *image = rb->TexImage;

   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.)

       */

      _swrast_render_texture(ctx, fb, att);

      return;

   }

   intel_miptree_check_level_layer(mt, att->TextureLevel, layer);

   if (!intel_renderbuffer_update_wrapper(intel, irb, image, layer)) {

       _swrast_render_texture(ctx, fb, att);

       return;

   }

   DBG("Begin render %s texture tex=%u w=%d h=%d d=%d refcount=%d\n",

       _mesa_get_format_name(image->TexFormat),

       att->Texture->Name, image->Width, image->Height, image->Depth,

       rb->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 *rb)

{

   struct intel_context *intel = intel_context(ctx);

   DBG("Finish render %s texture\n", _mesa_get_format_name(rb->Format));

   /* 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);

}

#define fbo_incomplete(fb, ...) do {                                          \

      static GLuint msg_id = 0;                                               \

      if (unlikely(ctx->Const.ContextFlags & GL_CONTEXT_FLAG_DEBUG_BIT)) {    \

         _mesa_gl_debug(ctx, &msg_id,                                         \

                        MESA_DEBUG_TYPE_OTHER,                                \

                        MESA_DEBUG_SEVERITY_MEDIUM,                           \

                        __VA_ARGS__);                                         \

      }                                                                       \

      DBG(__VA_ARGS__);                                                       \

      fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;                               \

   } while (0)

/**

 * 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);

   struct intel_renderbuffer *depthRb =

      intel_get_renderbuffer(fb, BUFFER_DEPTH);

   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 (depth_mt && stencil_mt) {

      /* Make sure that the depth and stencil buffers are actually the same

       * slice of the same miptree, since we only support packed

       * depth/stencil.

       */

      if (depth_mt == stencil_mt) {

	 if (depthRb->mt_level != stencilRb->mt_level ||

	     depthRb->mt_layer != stencilRb->mt_layer) {

	    fbo_incomplete(fb,

                           "FBO incomplete: depth image level/layer %d/%d != "

                           "stencil image %d/%d\n",

                           depthRb->mt_level,

                           depthRb->mt_layer,

                           stencilRb->mt_level,

                           stencilRb->mt_layer);

	 }

      } else {

         fbo_incomplete(fb, "FBO incomplete: separate stencil unsupported\n");

      }

   }

   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) {

	 fbo_incomplete(fb, "FBO incomplete: attachment without "

                        "renderbuffer\n");

	 continue;

      }

      if (fb->Attachment[i].Type == GL_TEXTURE) {

	 if (rb->TexImage->Border) {

	    fbo_incomplete(fb, "FBO incomplete: texture with border\n");

	    continue;

	 }

      }

      irb = intel_renderbuffer(rb);

      if (irb == NULL) {

	 fbo_incomplete(fb, "FBO incomplete: software rendering "

                        "renderbuffer\n");

	 continue;

      }

      if (!intel->vtbl.render_target_supported(intel, rb)) {

	 fbo_incomplete(fb, "FBO incomplete: Unsupported HW "

                        "texture/renderbuffer format attached: %s\n",

                        _mesa_get_format_name(intel_rb_format(irb)));

      }

   }

}

/**

 * 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_with_blitter(struct gl_context *ctx,

                                    GLint srcX0, GLint srcY0,

                                    GLint srcX1, GLint srcY1,

                                    GLint dstX0, GLint dstY0,

                                    GLint dstX1, GLint dstY1,

                                    GLbitfield mask, GLenum filter)

{

   struct intel_context *intel = intel_context(ctx);

   if (mask & GL_COLOR_BUFFER_BIT) {

      GLint i;

      const struct gl_framebuffer *drawFb = ctx->DrawBuffer;

      const struct gl_framebuffer *readFb = ctx->ReadBuffer;

      struct gl_renderbuffer *src_rb = readFb->_ColorReadBuffer;

      struct intel_renderbuffer *src_irb = intel_renderbuffer(src_rb);

      if (!src_irb) {

         perf_debug("glBlitFramebuffer(): missing src renderbuffer.  "

                    "Falling back to software rendering.\n");

         return mask;

      }

      /* 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 probably use the blit engine.

       */

      if (!(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)) {

         perf_debug("glBlitFramebuffer(): non-1:1 blit.  "

                    "Falling back to software rendering.\n");

         return mask;

      }

      /* Blit to all active draw buffers.  We don't do any pre-checking,

       * because we assume that copying to MRTs is rare, and failure midway

       * through copying is even more rare.  Even if it was to occur, it's

       * safe to let meta start the copy over from scratch, because

       * glBlitFramebuffer completely overwrites the destination pixels, and

       * results are undefined if any destination pixels have a dependency on

       * source pixels.

       */

      for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {

         struct gl_renderbuffer *dst_rb = ctx->DrawBuffer->_ColorDrawBuffers[i];

         struct intel_renderbuffer *dst_irb = intel_renderbuffer(dst_rb);

         if (!dst_irb) {

            perf_debug("glBlitFramebuffer(): missing dst renderbuffer.  "

                       "Falling back to software rendering.\n");

            return mask;

         }

         gl_format src_format = _mesa_get_srgb_format_linear(src_rb->Format);

         gl_format dst_format = _mesa_get_srgb_format_linear(dst_rb->Format);

         if (src_format != dst_format) {

            perf_debug("glBlitFramebuffer(): unsupported blit from %s to %s.  "

                       "Falling back to software rendering.\n",

                       _mesa_get_format_name(src_format),

                       _mesa_get_format_name(dst_format));

            return mask;

         }

         if (!intel_miptree_blit(intel,

                                 src_irb->mt,

                                 src_irb->mt_level, src_irb->mt_layer,

                                 srcX0, srcY0, src_rb->Name == 0,

                                 dst_irb->mt,

                                 dst_irb->mt_level, dst_irb->mt_layer,

                                 dstX0, dstY0, dst_rb->Name == 0,

                                 dstX1 - dstX0, dstY1 - dstY0, GL_COPY)) {

            perf_debug("glBlitFramebuffer(): unknown blit failure.  "

                       "Falling back to software rendering.\n");

            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 using the BLT engine. */

   mask = intel_blit_framebuffer_with_blitter(ctx,

                                              srcX0, srcY0, srcX1, srcY1,

                                              dstX0, dstY0, dstX1, dstY1,

                                              mask, filter);

   if (mask == 0x0)

      return;

   _mesa_meta_BlitFramebuffer(ctx,

                              srcX0, srcY0, srcX1, srcY1,

                              dstX0, dstY0, dstX1, dstY1,

                              mask, filter);

}

/**

 * 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.ValidateFramebuffer = intel_validate_framebuffer;

   intel->ctx.Driver.BlitFramebuffer = intel_blit_framebuffer;

   intel->ctx.Driver.EGLImageTargetRenderbufferStorage =

      intel_image_target_renderbuffer_storage;

}