[Mesa-dev] [PATCH rework] mesa: rework Driver.CopyImageSubData() and related code
Jason Ekstrand
jason at jlekstrand.net
Thu Aug 27 23:43:55 PDT 2015
On Thu, Aug 27, 2015 at 11:42 PM, Jason Ekstrand <jason at jlekstrand.net> wrote:
> From: Brian Paul <brianp at vmware.com>
>
> Previously, core Mesa's _mesa_CopyImageSubData() created temporary textures
> to wrap renderbuffer sources/destinations. This caused a bit of a mess in
> the Mesa/gallium state tracker because we had to basically undo that
> wrapping.
>
> Instead, change ctx->Driver.CopyImageSubData() to take both gl_renderbuffer
> and gl_texture_image src/dst pointers (one being null, the other non-null)
> so the driver can handle renderbuffer vs. texture as needed.
>
> For the i965 driver, we basically moved the code that wrapped textures
> around renderbuffers from copyimage.c down into the driver. So that
> approach is still used there as before.
>
> The old code in copyimage.c also made some questionable calls to
> _mesa_BindTexture(), etc. which weren't undone at the end.
>
> v2 (Jason Ekstrand): Rework the intel bits
> ---
>
> TBH, I haven't actually reviewed the rest of the patch yet but I figured
> I'd save Brian the time of guess-and-check implementing it on Intel. I
> completely reworked the intel bits so we now use the tex/rb directly and
> pun the renderbuffer wrapping all the way down to the meta layer where it
> belongs.
I ran a few quick piglit tests on my Broadwell and it seems to work.
I also sent it off to our CI system and I'll have those results in the
morning.
> src/mesa/drivers/common/meta.h | 2 +
> src/mesa/drivers/common/meta_copy_image.c | 103 ++++++++-
> src/mesa/drivers/dri/i965/intel_copy_image.c | 80 +++++--
> src/mesa/main/copyimage.c | 301 +++++++++++++++------------
> src/mesa/main/dd.h | 15 +-
> 5 files changed, 335 insertions(+), 166 deletions(-)
>
> diff --git a/src/mesa/drivers/common/meta.h b/src/mesa/drivers/common/meta.h
> index fe43915..23fa209 100644
> --- a/src/mesa/drivers/common/meta.h
> +++ b/src/mesa/drivers/common/meta.h
> @@ -494,8 +494,10 @@ _mesa_meta_and_swrast_BlitFramebuffer(struct gl_context *ctx,
> 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);
>
> diff --git a/src/mesa/drivers/common/meta_copy_image.c b/src/mesa/drivers/common/meta_copy_image.c
> index 149ed18..33490ee 100644
> --- a/src/mesa/drivers/common/meta_copy_image.c
> +++ b/src/mesa/drivers/common/meta_copy_image.c
> @@ -35,6 +35,46 @@
> #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
> @@ -112,11 +152,15 @@ make_view(struct gl_context *ctx, struct gl_texture_image *tex_image,
> 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;
> GLuint fbos[2];
> @@ -124,15 +168,37 @@ _mesa_meta_CopyImageSubData_uncompressed(struct gl_context *ctx,
> GLbitfield mask;
> GLenum status, attachment;
>
> - if (_mesa_is_format_compressed(dst_tex_image->TexFormat))
> + 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(src_tex_image->TexFormat))
> + if (_mesa_is_format_compressed(dst_format))
> return false;
>
> - if (src_tex_image->InternalFormat == dst_tex_image->InternalFormat) {
> + 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_tex_image->InternalFormat))
> goto cleanup;
> @@ -145,7 +211,7 @@ _mesa_meta_CopyImageSubData_uncompressed(struct gl_context *ctx,
> _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER, fbos[0]);
> _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, fbos[1]);
>
> - switch (_mesa_get_format_base_format(src_tex_image->TexFormat)) {
> + switch (_mesa_get_format_base_format(src_format)) {
> case GL_DEPTH_COMPONENT:
> attachment = GL_DEPTH_ATTACHMENT;
> mask = GL_DEPTH_BUFFER_BIT;
> @@ -165,15 +231,32 @@ _mesa_meta_CopyImageSubData_uncompressed(struct gl_context *ctx,
> _mesa_ReadBuffer(GL_COLOR_ATTACHMENT0);
> }
>
> - _mesa_meta_bind_fbo_image(GL_READ_FRAMEBUFFER, attachment,
> - src_view_tex_image, src_z);
> + if (src_view_tex_image) {
> + /* Prever the tex image because, even if we have a renderbuffer, we may
> + * have had to wrap it in a texture view.
> + */
> + _mesa_meta_bind_fbo_image(GL_READ_FRAMEBUFFER, attachment,
> + src_view_tex_image, src_z);
> + } else {
> + _mesa_FramebufferRenderbuffer(GL_READ_FRAMEBUFFER,
> + attachment,
> + GL_RENDERBUFFER,
> + src_renderbuffer->Name);
> + }
>
> status = _mesa_CheckFramebufferStatus(GL_READ_FRAMEBUFFER);
> if (status != GL_FRAMEBUFFER_COMPLETE)
> goto meta_end;
>
> - _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, attachment,
> - dst_tex_image, dst_z);
> + if (dst_renderbuffer) {
> + _mesa_FramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER,
> + attachment,
> + GL_RENDERBUFFER,
> + dst_renderbuffer->Name);
> + } else {
> + _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, attachment,
> + dst_tex_image, dst_z);
> + }
>
> status = _mesa_CheckFramebufferStatus(GL_DRAW_FRAMEBUFFER);
> if (status != GL_FRAMEBUFFER_COMPLETE)
> @@ -205,5 +288,9 @@ meta_end:
> 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 ac2738f..d57651c 100644
> --- a/src/mesa/drivers/dri/i965/intel_copy_image.c
> +++ b/src/mesa/drivers/dri/i965/intel_copy_image.c
> @@ -25,10 +25,12 @@
> * Jason Ekstrand <jason.ekstrand at intel.com>
> */
>
> +#include "intel_fbo.h"
> #include "intel_tex.h"
> #include "intel_blit.h"
> #include "intel_mipmap_tree.h"
> #include "main/formats.h"
> +#include "main/teximage.h"
> #include "drivers/common/meta.h"
>
> static bool
> @@ -196,54 +198,86 @@ copy_image_with_memcpy(struct brw_context *brw,
> }
> }
>
> +
> static void
> intel_copy_image_sub_data(struct gl_context *ctx,
> struct gl_texture_image *src_image,
> + struct gl_renderbuffer *src_renderbuffer,
> int src_x, int src_y, int src_z,
> struct gl_texture_image *dst_image,
> + struct gl_renderbuffer *dst_renderbuffer,
> int dst_x, int dst_y, int dst_z,
> int src_width, int src_height)
> {
> struct brw_context *brw = brw_context(ctx);
> - struct intel_texture_image *intel_src_image = intel_texture_image(src_image);
> - struct intel_texture_image *intel_dst_image = intel_texture_image(dst_image);
> + struct intel_mipmap_tree *src_mt, *dst_mt;
> + unsigned src_level, dst_level;
>
> if (_mesa_meta_CopyImageSubData_uncompressed(ctx,
> - src_image, src_x, src_y, src_z,
> - dst_image, dst_x, dst_y, dst_z,
> + 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 (intel_src_image->mt->num_samples > 0 ||
> - intel_dst_image->mt->num_samples > 0) {
> + if (src_image) {
> + src_mt = intel_texture_image(src_image)->mt;
> + } else {
> + assert(src_renderbuffer);
> + src_mt = intel_renderbuffer(src_renderbuffer)->mt;
> + src_image = src_renderbuffer->TexImage;
> + }
> +
> + if (dst_image) {
> + dst_mt = intel_texture_image(dst_image)->mt;
> + } else {
> + assert(dst_renderbuffer);
> + dst_mt = intel_renderbuffer(dst_renderbuffer)->mt;
> + src_image = src_renderbuffer->TexImage;
> + }
> +
> + if (src_mt->num_samples > 0 || dst_mt->num_samples > 0) {
> _mesa_problem(ctx, "Failed to copy multisampled texture with meta path\n");
> return;
> }
>
> - /* Cube maps actually have different images per face */
> - if (src_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
> - src_z = src_image->Face;
> - if (dst_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
> - dst_z = dst_image->Face;
> + if (src_image) {
> + src_level = src_image->Level + src_image->TexObject->MinLevel;
> +
> + /* Cube maps actually have different images per face */
> + if (src_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
> + src_z = src_image->Face;
> + } else {
> + src_level = 0;
> + }
> +
> + if (dst_image) {
> + dst_level = dst_image->Level + dst_image->TexObject->MinLevel;
> +
> + /* Cube maps actually have different images per face */
> + if (dst_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
> + dst_z = dst_image->Face;
> + } else {
> + dst_level = 0;
> + }
>
> /* We are now going to try and copy the texture using the blitter. If
> * that fails, we will fall back mapping the texture and using memcpy.
> * In either case, we need to do a full resolve.
> */
> - intel_miptree_all_slices_resolve_hiz(brw, intel_src_image->mt);
> - intel_miptree_all_slices_resolve_depth(brw, intel_src_image->mt);
> - intel_miptree_resolve_color(brw, intel_src_image->mt);
> + intel_miptree_all_slices_resolve_hiz(brw, src_mt);
> + intel_miptree_all_slices_resolve_depth(brw, src_mt);
> + intel_miptree_resolve_color(brw, src_mt);
>
> - intel_miptree_all_slices_resolve_hiz(brw, intel_dst_image->mt);
> - intel_miptree_all_slices_resolve_depth(brw, intel_dst_image->mt);
> - intel_miptree_resolve_color(brw, intel_dst_image->mt);
> + intel_miptree_all_slices_resolve_hiz(brw, dst_mt);
> + intel_miptree_all_slices_resolve_depth(brw, dst_mt);
> + intel_miptree_resolve_color(brw, dst_mt);
>
> - unsigned src_level = src_image->Level + src_image->TexObject->MinLevel;
> - unsigned dst_level = dst_image->Level + dst_image->TexObject->MinLevel;
> - if (copy_image_with_blitter(brw, intel_src_image->mt, src_level,
> + if (copy_image_with_blitter(brw, src_mt, src_level,
> src_x, src_y, src_z,
> - intel_dst_image->mt, dst_level,
> + dst_mt, dst_level,
> dst_x, dst_y, dst_z,
> src_width, src_height))
> return;
> @@ -251,9 +285,9 @@ intel_copy_image_sub_data(struct gl_context *ctx,
> /* This is a worst-case scenario software fallback that maps the two
> * textures and does a memcpy between them.
> */
> - copy_image_with_memcpy(brw, intel_src_image->mt, src_level,
> + copy_image_with_memcpy(brw, src_mt, src_level,
> src_x, src_y, src_z,
> - intel_dst_image->mt, dst_level,
> + dst_mt, dst_level,
> dst_x, dst_y, dst_z,
> src_width, src_height);
> }
> diff --git a/src/mesa/main/copyimage.c b/src/mesa/main/copyimage.c
> index 05bc50d..f02e842 100644
> --- a/src/mesa/main/copyimage.c
> +++ b/src/mesa/main/copyimage.c
> @@ -41,22 +41,27 @@ enum mesa_block_class {
> };
>
> /**
> - * Prepare the source or destination resource, including:
> - * - Error checking
> - * - Creating texture wrappers for renderbuffers
> + * Prepare the source or destination resource. This involves error
> + * checking and returning the relevant gl_texture_image or gl_renderbuffer.
> + * Note that one of the resulting tex_image or renderbuffer pointers will be
> + * NULL and the other will be non-null.
> + *
> * \param name the texture or renderbuffer name
> - * \param target GL_TEXTURE target or GL_RENDERBUFFER. For the later, will
> - * be changed to a compatible GL_TEXTURE target.
> + * \param target One of GL_TEXTURE_x target or GL_RENDERBUFFER
> * \param level mipmap level
> - * \param tex_obj returns a pointer to a texture object
> + * \param z src or dest Z
> + * \param depth number of slices/faces/layers to copy
> * \param tex_image returns a pointer to a texture image
> - * \param tmp_tex returns temporary texture object name
> + * \param renderbuffer returns a pointer to a renderbuffer
> * \return true if success, false if error
> */
> static bool
> -prepare_target(struct gl_context *ctx, GLuint name, GLenum *target, int level,
> - struct gl_texture_object **tex_obj,
> - struct gl_texture_image **tex_image, GLuint *tmp_tex,
> +prepare_target(struct gl_context *ctx, GLuint name, GLenum target,
> + int level, int z, int depth,
> + struct gl_texture_image **tex_image,
> + struct gl_renderbuffer **renderbuffer,
> + mesa_format *format,
> + GLenum *internalFormat,
> const char *dbg_prefix)
> {
> if (name == 0) {
> @@ -72,7 +77,7 @@ prepare_target(struct gl_context *ctx, GLuint name, GLenum *target, int level,
> * - is TEXTURE_BUFFER, or
> * - is one of the cubemap face selectors described in table 3.17,
> */
> - switch (*target) {
> + switch (target) {
> case GL_RENDERBUFFER:
> /* Not a texture target, but valid */
> case GL_TEXTURE_1D:
> @@ -93,12 +98,13 @@ prepare_target(struct gl_context *ctx, GLuint name, GLenum *target, int level,
> default:
> _mesa_error(ctx, GL_INVALID_ENUM,
> "glCopyImageSubData(%sTarget = %s)", dbg_prefix,
> - _mesa_enum_to_string(*target));
> + _mesa_enum_to_string(target));
> return false;
> }
>
> - if (*target == GL_RENDERBUFFER) {
> + if (target == GL_RENDERBUFFER) {
> struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, name);
> +
> if (!rb) {
> _mesa_error(ctx, GL_INVALID_VALUE,
> "glCopyImageSubData(%sName = %u)", dbg_prefix, name);
> @@ -117,49 +123,38 @@ prepare_target(struct gl_context *ctx, GLuint name, GLenum *target, int level,
> return false;
> }
>
> - if (rb->NumSamples > 1)
> - *target = GL_TEXTURE_2D_MULTISAMPLE;
> - else
> - *target = GL_TEXTURE_2D;
> -
> - *tmp_tex = 0;
> - _mesa_GenTextures(1, tmp_tex);
> - if (*tmp_tex == 0)
> - return false; /* Error already set by GenTextures */
> -
> - _mesa_BindTexture(*target, *tmp_tex);
> - *tex_obj = _mesa_lookup_texture(ctx, *tmp_tex);
> - *tex_image = _mesa_get_tex_image(ctx, *tex_obj, *target, 0);
> -
> - if (!ctx->Driver.BindRenderbufferTexImage(ctx, rb, *tex_image)) {
> - _mesa_problem(ctx, "Failed to create texture from renderbuffer");
> - return false;
> - }
> -
> - if (ctx->Driver.FinishRenderTexture && !rb->NeedsFinishRenderTexture) {
> - rb->NeedsFinishRenderTexture = true;
> - ctx->Driver.FinishRenderTexture(ctx, rb);
> - }
> + *renderbuffer = rb;
> + *format = rb->Format;
> + *internalFormat = rb->InternalFormat;
> + *tex_image = NULL;
> } else {
> - *tex_obj = _mesa_lookup_texture(ctx, name);
> - if (!*tex_obj) {
> + struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, name);
> +
> + if (!texObj) {
> _mesa_error(ctx, GL_INVALID_VALUE,
> "glCopyImageSubData(%sName = %u)", dbg_prefix, name);
> return false;
> }
>
> - _mesa_test_texobj_completeness(ctx, *tex_obj);
> - if (!(*tex_obj)->_BaseComplete ||
> - (level != 0 && !(*tex_obj)->_MipmapComplete)) {
> + _mesa_test_texobj_completeness(ctx, texObj);
> + if (!texObj->_BaseComplete ||
> + (level != 0 && !texObj->_MipmapComplete)) {
> _mesa_error(ctx, GL_INVALID_OPERATION,
> "glCopyImageSubData(%sName incomplete)", dbg_prefix);
> return false;
> }
>
> - if ((*tex_obj)->Target != *target) {
> - _mesa_error(ctx, GL_INVALID_ENUM,
> + /* Note that target will not be a cube face name */
> + if (texObj->Target != target) {
> + /*
> + * From GL_ARB_copy_image specification:
> + * "INVALID_VALUE is generated if either <srcName> or <dstName> does
> + * not correspond to a valid renderbuffer or texture object according
> + * to the corresponding target parameter."
> + */
> + _mesa_error(ctx, GL_INVALID_VALUE,
> "glCopyImageSubData(%sTarget = %s)", dbg_prefix,
> - _mesa_enum_to_string(*target));
> + _mesa_enum_to_string(target));
> return false;
> }
>
> @@ -169,12 +164,36 @@ prepare_target(struct gl_context *ctx, GLuint name, GLenum *target, int level,
> return false;
> }
>
> - *tex_image = _mesa_select_tex_image(*tex_obj, *target, level);
> + if (target == GL_TEXTURE_CUBE_MAP) {
> + int i;
> +
> + assert(z < MAX_FACES); /* should have been caught earlier */
> +
> + /* make sure all the cube faces are present */
> + for (i = 0; i < depth; i++) {
> + if (!texObj->Image[z+i][level]) {
> + /* missing cube face */
> + _mesa_error(ctx, GL_INVALID_OPERATION,
> + "glCopyImageSubData(missing cube face)");
> + return false;
> + }
> + }
> +
> + *tex_image = texObj->Image[z][level];
> + }
> + else {
> + *tex_image = _mesa_select_tex_image(texObj, target, level);
> + }
> +
> if (!*tex_image) {
> _mesa_error(ctx, GL_INVALID_VALUE,
> "glCopyImageSubData(%sLevel = %u)", dbg_prefix, level);
> return false;
> }
> +
> + *renderbuffer = NULL;
> + *format = (*tex_image)->TexFormat;
> + *internalFormat = (*tex_image)->InternalFormat;
> }
>
> return true;
> @@ -188,10 +207,14 @@ prepare_target(struct gl_context *ctx, GLuint name, GLenum *target, int level,
> */
> static bool
> check_region_bounds(struct gl_context *ctx,
> + GLenum target,
> const struct gl_texture_image *tex_image,
> + const struct gl_renderbuffer *renderbuffer,
> int x, int y, int z, int width, int height, int depth,
> const char *dbg_prefix)
> {
> + int surfWidth, surfHeight, surfDepth;
> +
> if (width < 0 || height < 0 || depth < 0) {
> _mesa_error(ctx, GL_INVALID_VALUE,
> "glCopyImageSubData(%sWidth, %sHeight, or %sDepth is negative)",
> @@ -207,7 +230,14 @@ check_region_bounds(struct gl_context *ctx,
> }
>
> /* Check X direction */
> - if (x + width > tex_image->Width) {
> + if (target == GL_RENDERBUFFER) {
> + surfWidth = renderbuffer->Width;
> + }
> + else {
> + surfWidth = tex_image->Width;
> + }
> +
> + if (x + width > surfWidth) {
> _mesa_error(ctx, GL_INVALID_VALUE,
> "glCopyImageSubData(%sX or %sWidth exceeds image bounds)",
> dbg_prefix, dbg_prefix);
> @@ -215,66 +245,49 @@ check_region_bounds(struct gl_context *ctx,
> }
>
> /* Check Y direction */
> - switch (tex_image->TexObject->Target) {
> + switch (target) {
> + case GL_RENDERBUFFER:
> + surfHeight = renderbuffer->Height;
> + break;
> case GL_TEXTURE_1D:
> case GL_TEXTURE_1D_ARRAY:
> - if (y != 0 || height != 1) {
> - _mesa_error(ctx, GL_INVALID_VALUE,
> - "glCopyImageSubData(%sY or %sHeight exceeds image bounds)",
> - dbg_prefix, dbg_prefix);
> - return false;
> - }
> + surfHeight = 1;
> break;
> default:
> - if (y + height > tex_image->Height) {
> - _mesa_error(ctx, GL_INVALID_VALUE,
> - "glCopyImageSubData(%sY or %sHeight exceeds image bounds)",
> - dbg_prefix, dbg_prefix);
> - return false;
> - }
> - break;
> + surfHeight = tex_image->Height;
> + }
> +
> + if (y + height > surfHeight) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glCopyImageSubData(%sY or %sHeight exceeds image bounds)",
> + dbg_prefix, dbg_prefix);
> + return false;
> }
>
> /* Check Z direction */
> - switch (tex_image->TexObject->Target) {
> + switch (target) {
> + case GL_RENDERBUFFER:
> case GL_TEXTURE_1D:
> case GL_TEXTURE_2D:
> case GL_TEXTURE_2D_MULTISAMPLE:
> case GL_TEXTURE_RECTANGLE:
> - if (z != 0 || depth != 1) {
> - _mesa_error(ctx, GL_INVALID_VALUE,
> - "glCopyImageSubData(%sZ or %sDepth exceeds image bounds)",
> - dbg_prefix, dbg_prefix);
> - return false;
> - }
> + surfDepth = 1;
> break;
> case GL_TEXTURE_CUBE_MAP:
> - if (z < 0 || z + depth > 6) {
> - _mesa_error(ctx, GL_INVALID_VALUE,
> - "glCopyImageSubData(%sZ or %sDepth exceeds image bounds)",
> - dbg_prefix, dbg_prefix);
> - return false;
> - }
> + surfDepth = 6;
> break;
> case GL_TEXTURE_1D_ARRAY:
> - if (z < 0 || z + depth > tex_image->Height) {
> - _mesa_error(ctx, GL_INVALID_VALUE,
> - "glCopyImageSubData(%sZ or %sDepth exceeds image bounds)",
> - dbg_prefix, dbg_prefix);
> - return false;
> - }
> - break;
> - case GL_TEXTURE_CUBE_MAP_ARRAY:
> - case GL_TEXTURE_2D_ARRAY:
> - case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
> - case GL_TEXTURE_3D:
> - if (z < 0 || z + depth > tex_image->Depth) {
> - _mesa_error(ctx, GL_INVALID_VALUE,
> - "glCopyImageSubData(%sZ or %sDepth exceeds image bounds)",
> - dbg_prefix, dbg_prefix);
> - return false;
> - }
> + surfDepth = tex_image->Height;
> break;
> + default:
> + surfDepth = tex_image->Depth;
> + }
> +
> + if (z < 0 || z + depth > surfDepth) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glCopyImageSubData(%sZ or %sDepth exceeds image bounds)",
> + dbg_prefix, dbg_prefix);
> + return false;
> }
>
> return true;
> @@ -406,10 +419,12 @@ _mesa_CopyImageSubData(GLuint srcName, GLenum srcTarget, GLint srcLevel,
> GLsizei srcWidth, GLsizei srcHeight, GLsizei srcDepth)
> {
> GET_CURRENT_CONTEXT(ctx);
> - GLuint tmpTexNames[2] = { 0, 0 };
> - struct gl_texture_object *srcTexObj, *dstTexObj;
> struct gl_texture_image *srcTexImage, *dstTexImage;
> + struct gl_renderbuffer *srcRenderbuffer, *dstRenderbuffer;
> + mesa_format srcFormat, dstFormat;
> + GLenum srcIntFormat, dstIntFormat;
> GLuint src_bw, src_bh, dst_bw, dst_bh;
> + int dstWidth, dstHeight, dstDepth;
> int i;
>
> if (MESA_VERBOSE & VERBOSE_API)
> @@ -420,7 +435,7 @@ _mesa_CopyImageSubData(GLuint srcName, GLenum srcTarget, GLint srcLevel,
> srcX, srcY, srcZ,
> dstName, _mesa_enum_to_string(dstTarget), dstLevel,
> dstX, dstY, dstZ,
> - srcWidth, srcHeight, srcWidth);
> + srcWidth, srcHeight, srcDepth);
>
> if (!ctx->Extensions.ARB_copy_image) {
> _mesa_error(ctx, GL_INVALID_OPERATION,
> @@ -428,67 +443,93 @@ _mesa_CopyImageSubData(GLuint srcName, GLenum srcTarget, GLint srcLevel,
> return;
> }
>
> - if (!prepare_target(ctx, srcName, &srcTarget, srcLevel,
> - &srcTexObj, &srcTexImage, &tmpTexNames[0], "src"))
> - goto cleanup;
> + if (!prepare_target(ctx, srcName, srcTarget, srcLevel, srcZ, srcDepth,
> + &srcTexImage, &srcRenderbuffer, &srcFormat,
> + &srcIntFormat, "src"))
> + return;
>
> - if (!prepare_target(ctx, dstName, &dstTarget, dstLevel,
> - &dstTexObj, &dstTexImage, &tmpTexNames[1], "dst"))
> - goto cleanup;
> + if (!prepare_target(ctx, dstName, dstTarget, dstLevel, dstZ, srcDepth,
> + &dstTexImage, &dstRenderbuffer, &dstFormat,
> + &dstIntFormat, "dst"))
> + return;
>
> - _mesa_get_format_block_size(srcTexImage->TexFormat, &src_bw, &src_bh);
> + _mesa_get_format_block_size(srcFormat, &src_bw, &src_bh);
> if ((srcX % src_bw != 0) || (srcY % src_bh != 0) ||
> (srcWidth % src_bw != 0) || (srcHeight % src_bh != 0)) {
> _mesa_error(ctx, GL_INVALID_VALUE,
> "glCopyImageSubData(unaligned src rectangle)");
> - goto cleanup;
> + return;
> }
>
> - _mesa_get_format_block_size(dstTexImage->TexFormat, &dst_bw, &dst_bh);
> + _mesa_get_format_block_size(dstFormat, &dst_bw, &dst_bh);
> if ((dstX % dst_bw != 0) || (dstY % dst_bh != 0)) {
> _mesa_error(ctx, GL_INVALID_VALUE,
> "glCopyImageSubData(unaligned dst rectangle)");
> - goto cleanup;
> + return;
> }
>
> - if (!check_region_bounds(ctx, srcTexImage, srcX, srcY, srcZ,
> - srcWidth, srcHeight, srcDepth, "src"))
> - goto cleanup;
> + /* From the GL_ARB_copy_image spec:
> + *
> + * "The dimensions are always specified in texels, even for compressed
> + * texture formats. But it should be noted that if only one of the
> + * source and destination textures is compressed then the number of
> + * texels touched in the compressed image will be a factor of the
> + * block size larger than in the uncompressed image."
> + *
> + * So, if copying from compressed to uncompressed, the dest region is
> + * shrunk by the src block size factor. If copying from uncompressed
> + * to compressed, the dest region is grown by the dest block size factor.
> + * Note that we're passed the _source_ width, height, depth and those
> + * dimensions are never changed.
> + */
> + dstWidth = srcWidth * dst_bw / src_bw;
> + dstHeight = srcHeight * dst_bh / src_bh;
> + dstDepth = srcDepth;
> +
> + if (!check_region_bounds(ctx, srcTarget, srcTexImage, srcRenderbuffer,
> + srcX, srcY, srcZ, srcWidth, srcHeight, srcDepth,
> + "src"))
> + return;
>
> - if (!check_region_bounds(ctx, dstTexImage, dstX, dstY, dstZ,
> - (srcWidth / src_bw) * dst_bw,
> - (srcHeight / src_bh) * dst_bh, srcDepth, "dst"))
> - goto cleanup;
> + if (!check_region_bounds(ctx, dstTarget, dstTexImage, dstRenderbuffer,
> + dstX, dstY, dstZ, dstWidth, dstHeight, dstDepth,
> + "dst"))
> + return;
>
> - if (!copy_format_compatible(ctx, srcTexImage->InternalFormat,
> - dstTexImage->InternalFormat)) {
> + if (!copy_format_compatible(ctx, srcIntFormat, dstIntFormat)) {
> _mesa_error(ctx, GL_INVALID_OPERATION,
> "glCopyImageSubData(internalFormat mismatch)");
> - goto cleanup;
> + return;
> }
>
> + /* loop over 2D slices/faces/layers */
> for (i = 0; i < srcDepth; ++i) {
> - int srcNewZ, dstNewZ;
> -
> - if (srcTexObj->Target == GL_TEXTURE_CUBE_MAP) {
> - srcTexImage = srcTexObj->Image[i + srcZ][srcLevel];
> - srcNewZ = 0;
> - } else {
> - srcNewZ = srcZ + i;
> + int newSrcZ = srcZ + i;
> + int newDstZ = dstZ + i;
> +
> + if (srcTexImage &&
> + srcTexImage->TexObject->Target == GL_TEXTURE_CUBE_MAP) {
> + /* need to update srcTexImage pointer for the cube face */
> + assert(srcZ + i < MAX_FACES);
> + srcTexImage = srcTexImage->TexObject->Image[srcZ + i][srcLevel];
> + assert(srcTexImage);
> + newSrcZ = 0;
> }
>
> - if (dstTexObj->Target == GL_TEXTURE_CUBE_MAP) {
> - dstTexImage = dstTexObj->Image[i + dstZ][dstLevel];
> - dstNewZ = 0;
> - } else {
> - dstNewZ = dstZ + i;
> + if (dstTexImage &&
> + dstTexImage->TexObject->Target == GL_TEXTURE_CUBE_MAP) {
> + /* need to update dstTexImage pointer for the cube face */
> + assert(dstZ + i < MAX_FACES);
> + dstTexImage = dstTexImage->TexObject->Image[dstZ + i][dstLevel];
> + assert(dstTexImage);
> + newDstZ = 0;
> }
>
> - ctx->Driver.CopyImageSubData(ctx, srcTexImage, srcX, srcY, srcNewZ,
> - dstTexImage, dstX, dstY, dstNewZ,
> + ctx->Driver.CopyImageSubData(ctx,
> + srcTexImage, srcRenderbuffer,
> + srcX, srcY, newSrcZ,
> + dstTexImage, dstRenderbuffer,
> + dstX, dstY, newDstZ,
> srcWidth, srcHeight);
> }
> -
> -cleanup:
> - _mesa_DeleteTextures(2, tmpTexNames);
> }
> diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
> index 87eb63e..2c746fc 100644
> --- a/src/mesa/main/dd.h
> +++ b/src/mesa/main/dd.h
> @@ -269,20 +269,25 @@ struct dd_function_table {
> struct gl_renderbuffer *rb,
> GLint x, GLint y,
> GLsizei width, GLsizei height);
> -
> /**
> * Called by glCopyImageSubData().
> *
> - * This function should copy one 2-D slice from srcTexImage to
> - * dstTexImage. If one of the textures is 3-D or is a 1-D or 2-D array
> + * This function should copy one 2-D slice from src_teximage or
> + * src_renderbuffer to dst_teximage or dst_renderbuffer. Either the
> + * teximage or renderbuffer pointer will be non-null to indicate which
> + * is the real src/dst.
> + *
> + * If one of the textures is 3-D or is a 1-D or 2-D array
> * texture, this function will be called multiple times: once for each
> * slice. If one of the textures is a cube map, this function will be
> * called once for each face to be copied.
> */
> void (*CopyImageSubData)(struct gl_context *ctx,
> - struct gl_texture_image *src_image,
> + struct gl_texture_image *src_teximage,
> + struct gl_renderbuffer *src_renderbuffer,
> int src_x, int src_y, int src_z,
> - struct gl_texture_image *dstTexImage,
> + struct gl_texture_image *dst_teximage,
> + struct gl_renderbuffer *dst_renderbuffer,
> int dst_x, int dst_y, int dst_z,
> int src_width, int src_height);
>
> --
> 2.5.0.400.gff86faf
>
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