i965: Delete the meta-base CopyImageSubData implementation

When I originally implemented the ARB_copy_image extension, the fast-path
was written in meta using texture views.  This path only worked if both
images were uncompressed color images.  All of the other cases fell back to
the blitter or, in the worst case, mapping and memcpy on the CPU.  Now that
we have the blorp path, it handles all copies ever and the old meta,
blitter, and CPU paths are only used on gen5 and below.  The primary reason
why we needed the meta path (apart from having a slow blitter on later
hardware) was to handle multisampling which gen5 and earlier don't support
anyway.  Since the blitter is reasonably fast on gen5, we can just delete
the meta path and get rid of all that terrible code.

If we decide that we're ok with just disabling ARB_copy_image on gen5 and
earlier (I personally am), then we could get rid of another 300 lines or so
of semi-hairy code.

Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

4 files changed, 0 insertions, 328 deletions

diff --git a/src/mesa/Makefile.sources b/src/mesa/Makefile.sources
index 410a61a749e..ee737b0d7f9 100644
--- a/src/mesa/Makefile.sources
+++ b/src/mesa/Makefile.sources
@@ -621,7 +621,6 @@ COMMON_DRIVER_FILES =			\
 	drivers/common/driverfuncs.c	\
 	drivers/common/driverfuncs.h	\
 	drivers/common/meta_blit.c	\
-	drivers/common/meta_copy_image.c	\
 	drivers/common/meta_generate_mipmap.c	\
 	drivers/common/meta_tex_subimage.c	\
 	drivers/common/meta.c \
diff --git a/src/mesa/drivers/common/meta.h b/src/mesa/drivers/common/meta.h
index a7018f5b08c..0a913e9fa82 100644
--- a/src/mesa/drivers/common/meta.h
+++ b/src/mesa/drivers/common/meta.h
@@ -492,16 +492,6 @@ _mesa_meta_and_swrast_BlitFramebuffer(struct gl_context *ctx,
                                       GLint dstX1, GLint dstY1,
                                       GLbitfield mask, GLenum filter);
 
-bool
-_mesa_meta_CopyImageSubData_uncompressed(struct gl_context *ctx,
-                                         struct gl_texture_image *src_tex_image,
-                                         struct gl_renderbuffer *src_renderbuffer,
-                                         int src_x, int src_y, int src_z,
-                                         struct gl_texture_image *dst_tex_image,
-                                         struct gl_renderbuffer *dst_renderbuffer,
-                                         int dst_x, int dst_y, int dst_z,
-                                         int src_width, int src_height);
-
 extern void
 _mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers);
 
diff --git a/src/mesa/drivers/common/meta_copy_image.c b/src/mesa/drivers/common/meta_copy_image.c
deleted file mode 100644
index e1c90a372d2..00000000000
--- a/src/mesa/drivers/common/meta_copy_image.c
+++ /dev/null
@@ -1,307 +0,0 @@
-/*
- * Mesa 3-D graphics library
- *
- * Copyright (C) 2014 Intel Corporation.  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, sublicense,
- * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS 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 "glheader.h"
-#include "context.h"
-#include "enums.h"
-#include "imports.h"
-#include "macros.h"
-#include "teximage.h"
-#include "texobj.h"
-#include "fbobject.h"
-#include "framebuffer.h"
-#include "buffers.h"
-#include "state.h"
-#include "mtypes.h"
-#include "meta.h"
-
-/**
- * Create a texture image that wraps a renderbuffer.
- */
-static struct gl_texture_image *
-wrap_renderbuffer(struct gl_context *ctx, struct gl_renderbuffer *rb)
-{
-   GLenum texTarget;
-   struct gl_texture_object *texObj;
-   struct gl_texture_image *texImage;
-
-   if (rb->NumSamples > 1)
-      texTarget = GL_TEXTURE_2D_MULTISAMPLE;
-   else
-      texTarget = GL_TEXTURE_2D;
-
-   /* Texture ID is not significant since it never goes into the hash table */
-   texObj = ctx->Driver.NewTextureObject(ctx, 0, texTarget);
-   assert(texObj);
-   if (!texObj)
-      return NULL;
-
-   texImage = _mesa_get_tex_image(ctx, texObj, texTarget, 0);
-   assert(texImage);
-   if (!texImage)
-      return NULL;
-
-   if (!ctx->Driver.BindRenderbufferTexImage(ctx, rb, texImage)) {
-      _mesa_problem(ctx, "Failed to create texture from renderbuffer");
-      return NULL;
-   }
-
-   if (ctx->Driver.FinishRenderTexture && !rb->NeedsFinishRenderTexture) {
-      rb->NeedsFinishRenderTexture = true;
-      ctx->Driver.FinishRenderTexture(ctx, rb);
-   }
-
-   return texImage;
-}
-
-
-/* This function makes a texture view without bothering with all of the API
- * checks.  Most of them are the same for CopyTexSubImage so checking would
- * be redundant.  The one major difference is that we don't check for
- * whether the texture is immutable or not.  However, since the view will
- * be created and then immediately destroyed, this should not be a problem.
- */
-static bool
-make_view(struct gl_context *ctx, struct gl_texture_image *tex_image,
-          struct gl_texture_image **view_tex_image, GLuint *view_tex_name,
-          GLenum internal_format)
-{
-   struct gl_texture_object *tex_obj = tex_image->TexObject;
-   struct gl_texture_object *view_tex_obj;
-   mesa_format tex_format;
-
-   /* Set up the new texture object */
-   _mesa_GenTextures(1, view_tex_name);
-   view_tex_obj = _mesa_lookup_texture(ctx, *view_tex_name);
-   if (!view_tex_obj)
-      return false;
-
-   tex_format = _mesa_choose_texture_format(ctx, view_tex_obj, tex_obj->Target,
-                                           0, internal_format,
-                                           GL_NONE, GL_NONE);
-
-   if (!ctx->Driver.TestProxyTexImage(ctx, tex_obj->Target, 1, 0, tex_format,
-                                      1, tex_image->Width, tex_image->Height,
-                                      tex_image->Depth)) {
-      _mesa_DeleteTextures(1, view_tex_name);
-      *view_tex_name = 0;
-      return false;
-   }
-
-   assert(tex_obj->Target != 0);
-   assert(tex_obj->TargetIndex < NUM_TEXTURE_TARGETS);
-
-   view_tex_obj->Target = tex_obj->Target;
-   view_tex_obj->TargetIndex = tex_obj->TargetIndex;
-
-   *view_tex_image = _mesa_get_tex_image(ctx, view_tex_obj, tex_obj->Target, 0);
-
-   if (!*view_tex_image) {
-      _mesa_DeleteTextures(1, view_tex_name);
-      *view_tex_name = 0;
-      return false;
-   }
-
-   _mesa_init_teximage_fields(ctx, *view_tex_image,
-                              tex_image->Width, tex_image->Height,
-                              tex_image->Depth,
-                              0, internal_format, tex_format);
-
-   view_tex_obj->MinLevel = tex_image->Level;
-   view_tex_obj->NumLevels = 1;
-   view_tex_obj->MinLayer = tex_obj->MinLayer;
-   view_tex_obj->NumLayers = tex_obj->NumLayers;
-   view_tex_obj->Immutable = tex_obj->Immutable;
-   view_tex_obj->ImmutableLevels = tex_obj->ImmutableLevels;
-
-   if (ctx->Driver.TextureView != NULL &&
-       !ctx->Driver.TextureView(ctx, view_tex_obj, tex_obj)) {
-      _mesa_DeleteTextures(1, view_tex_name);
-      *view_tex_name = 0;
-      return false; /* driver recorded error */
-   }
-
-   return true;
-}
-
-/** A partial implementation of glCopyImageSubData
- *
- * This is a partial implementation of glCopyImageSubData that works only
- * if both textures are uncompressed and the destination texture is
- * renderable.  It uses a slight abuse of a texture view (see make_view) to
- * turn the source texture into the destination texture type and then uses
- * _mesa_meta_BlitFramebuffers to do the copy.
- */
-bool
-_mesa_meta_CopyImageSubData_uncompressed(struct gl_context *ctx,
-                                         struct gl_texture_image *src_tex_image,
-                                         struct gl_renderbuffer *src_renderbuffer,
-                                         int src_x, int src_y, int src_z,
-                                         struct gl_texture_image *dst_tex_image,
-                                         struct gl_renderbuffer *dst_renderbuffer,
-                                         int dst_x, int dst_y, int dst_z,
-                                         int src_width, int src_height)
-{
-   mesa_format src_format, dst_format;
-   GLint src_internal_format, dst_internal_format;
-   GLuint src_view_texture = 0;
-   struct gl_texture_image *src_view_tex_image;
-   struct gl_framebuffer *readFb;
-   struct gl_framebuffer *drawFb = NULL;
-   bool success = false;
-   GLbitfield mask;
-   GLenum status, attachment;
-
-   if (src_renderbuffer) {
-      src_format = src_renderbuffer->Format;
-      src_internal_format = src_renderbuffer->InternalFormat;
-   } else {
-      assert(src_tex_image);
-      src_format = src_tex_image->TexFormat;
-      src_internal_format = src_tex_image->InternalFormat;
-   }
-
-   if (dst_renderbuffer) {
-      dst_format = dst_renderbuffer->Format;
-      dst_internal_format = dst_renderbuffer->InternalFormat;
-   } else {
-      assert(dst_tex_image);
-      dst_format = dst_tex_image->TexFormat;
-      dst_internal_format = dst_tex_image->InternalFormat;
-   }
-
-   if (_mesa_is_format_compressed(src_format))
-      return false;
-
-   if (_mesa_is_format_compressed(dst_format))
-      return false;
-
-   if (src_internal_format == dst_internal_format) {
-      src_view_tex_image = src_tex_image;
-   } else {
-      if (src_renderbuffer) {
-         assert(src_tex_image == NULL);
-         src_tex_image = wrap_renderbuffer(ctx, src_renderbuffer);
-      }
-      if (!make_view(ctx, src_tex_image, &src_view_tex_image, &src_view_texture,
-                     dst_internal_format))
-         goto cleanup;
-   }
-
-   /* We really only need to stash the bound framebuffers and scissor. */
-   _mesa_meta_begin(ctx, MESA_META_SCISSOR);
-
-   readFb = ctx->Driver.NewFramebuffer(ctx, 0xDEADBEEF);
-   if (readFb == NULL)
-      goto meta_end;
-
-   drawFb = ctx->Driver.NewFramebuffer(ctx, 0xDEADBEEF);
-   if (drawFb == NULL)
-      goto meta_end;
-
-   _mesa_bind_framebuffers(ctx, drawFb, readFb);
-
-   switch (_mesa_get_format_base_format(src_format)) {
-   case GL_DEPTH_COMPONENT:
-      attachment = GL_DEPTH_ATTACHMENT;
-      mask = GL_DEPTH_BUFFER_BIT;
-      break;
-   case GL_DEPTH_STENCIL:
-      attachment = GL_DEPTH_STENCIL_ATTACHMENT;
-      mask = GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT;
-      break;
-   case GL_STENCIL_INDEX:
-      attachment = GL_STENCIL_ATTACHMENT;
-      mask = GL_STENCIL_BUFFER_BIT;
-      break;
-   default:
-      attachment = GL_COLOR_ATTACHMENT0;
-      mask = GL_COLOR_BUFFER_BIT;
-      _mesa_DrawBuffer(GL_COLOR_ATTACHMENT0);
-      _mesa_ReadBuffer(GL_COLOR_ATTACHMENT0);
-   }
-
-   if (src_view_tex_image) {
-      /* Prefer the tex image because, even if we have a renderbuffer, we may
-       * have had to wrap it in a texture view.
-       */
-      _mesa_meta_framebuffer_texture_image(ctx, ctx->ReadBuffer, attachment,
-                                           src_view_tex_image, src_z);
-   } else {
-      _mesa_framebuffer_renderbuffer(ctx, ctx->ReadBuffer, attachment,
-                                     src_renderbuffer);
-   }
-
-   status = _mesa_check_framebuffer_status(ctx, ctx->ReadBuffer);
-   if (status != GL_FRAMEBUFFER_COMPLETE)
-      goto meta_end;
-
-   if (dst_renderbuffer) {
-      _mesa_framebuffer_renderbuffer(ctx, ctx->DrawBuffer, attachment,
-                                     dst_renderbuffer);
-   } else {
-      _mesa_meta_framebuffer_texture_image(ctx, ctx->DrawBuffer, attachment,
-                                           dst_tex_image, dst_z);
-   }
-
-   status = _mesa_check_framebuffer_status(ctx, ctx->DrawBuffer);
-   if (status != GL_FRAMEBUFFER_COMPLETE)
-      goto meta_end;
-
-   /* Explicitly disable sRGB encoding */
-   ctx->DrawBuffer->Visual.sRGBCapable = false;
-
-   /* Since we've bound a new draw framebuffer, we need to update its
-    * derived state -- _Xmin, etc -- for BlitFramebuffer's clipping to
-    * be correct.
-    */
-   _mesa_update_state(ctx);
-
-   /* We skip the core BlitFramebuffer checks for format consistency.
-    * We have already created views to ensure that the texture formats
-    * match.
-    */
-   ctx->Driver.BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
-                               src_x, src_y,
-                               src_x + src_width, src_y + src_height,
-                               dst_x, dst_y,
-                               dst_x + src_width, dst_y + src_height,
-                               mask, GL_NEAREST);
-
-   success = true;
-
-meta_end:
-   _mesa_reference_framebuffer(&readFb, NULL);
-   _mesa_reference_framebuffer(&drawFb, NULL);
-   _mesa_meta_end(ctx);
-
-cleanup:
-   _mesa_DeleteTextures(1, &src_view_texture);
-
-   /* If we got a renderbuffer source, delete the temporary texture */
-   if (src_renderbuffer && src_tex_image)
-      ctx->Driver.DeleteTexture(ctx, src_tex_image->TexObject);
-
-   return success;
-}
diff --git a/src/mesa/drivers/dri/i965/intel_copy_image.c b/src/mesa/drivers/dri/i965/intel_copy_image.c
index 56eaed6270f..85585c7b79e 100644
--- a/src/mesa/drivers/dri/i965/intel_copy_image.c
+++ b/src/mesa/drivers/dri/i965/intel_copy_image.c
@@ -183,16 +183,6 @@ intel_copy_image_sub_data(struct gl_context *ctx,
    struct intel_mipmap_tree *src_mt, *dst_mt;
    unsigned src_level, dst_level;
 
-   if (brw->gen < 6 &&
-       _mesa_meta_CopyImageSubData_uncompressed(ctx,
-                                                src_image, src_renderbuffer,
-                                                src_x, src_y, src_z,
-                                                dst_image, dst_renderbuffer,
-                                                dst_x, dst_y, dst_z,
-                                                src_width, src_height)) {
-      return;
-   }
-
    if (src_image) {
       src_mt = intel_texture_image(src_image)->mt;
       src_level = src_image->Level + src_image->TexObject->MinLevel;