[Mesa-dev] [PATCH 05/11] mesa: implement _mesa_GetTextureSubImage()
Ilia Mirkin
imirkin at alum.mit.edu
Wed Jul 1 22:01:27 PDT 2015
Brian, what happened to this series? Was there some conflict with DSA
and so you held off?
On Sat, Dec 13, 2014 at 9:42 AM, Brian Paul <brianp at vmware.com> wrote:
> One of the two new functions in GL_ARB_get_texture_sub_image.
> ---
> src/mesa/main/texgetimage.c | 305 ++++++++++++++++++++++++++++++++++++++------
> src/mesa/main/texgetimage.h | 8 ++
> 2 files changed, 277 insertions(+), 36 deletions(-)
>
> diff --git a/src/mesa/main/texgetimage.c b/src/mesa/main/texgetimage.c
> index 71c25bb..e1f238b 100644
> --- a/src/mesa/main/texgetimage.c
> +++ b/src/mesa/main/texgetimage.c
> @@ -44,6 +44,7 @@
> #include "texcompress.h"
> #include "texgetimage.h"
> #include "teximage.h"
> +#include "texobj.h"
> #include "texstore.h"
>
>
> @@ -803,41 +804,36 @@ legal_getteximage_target(struct gl_context *ctx, GLenum target)
>
>
> /**
> - * Do error checking for a glGetTexImage() call.
> + * Do error checking for a glGetTexImage() or glGetTextureSubImage() call.
> * \return GL_TRUE if any error, GL_FALSE if no errors.
> */
> static GLboolean
> -getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level,
> +getteximage_error_check(struct gl_context *ctx,
> + struct gl_texture_object *texObj, GLint level,
> GLenum format, GLenum type, GLsizei clientMemSize,
> - GLvoid *pixels )
> + GLvoid *pixels, const char *caller)
> {
> - struct gl_texture_object *texObj;
> + GLenum target = texObj->Target;
> struct gl_texture_image *texImage;
> const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
> - const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2;
> GLenum baseFormat, err;
>
> - if (!legal_getteximage_target(ctx, target)) {
> - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target=0x%x)", target);
> - return GL_TRUE;
> - }
> -
> assert(maxLevels != 0);
> if (level < 0 || level >= maxLevels) {
> - _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexImage(level)" );
> + _mesa_error(ctx, GL_INVALID_VALUE, "%s(level)", caller);
> return GL_TRUE;
> }
>
> err = _mesa_error_check_format_and_type(ctx, format, type);
> if (err != GL_NO_ERROR) {
> - _mesa_error(ctx, err, "glGetTexImage(format/type)");
> + _mesa_error(ctx, err, "%s(format/type)", caller);
> return GL_TRUE;
> }
>
> texObj = _mesa_get_current_tex_object(ctx, target);
>
> if (!texObj) {
> - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target)");
> + _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", caller);
> return GL_TRUE;
> }
>
> @@ -854,64 +850,79 @@ getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level,
> */
> if (_mesa_is_color_format(format)
> && !_mesa_is_color_format(baseFormat)) {
> - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
> + _mesa_error(ctx, GL_INVALID_OPERATION, "%s(format mismatch)", caller);
> return GL_TRUE;
> }
> else if (_mesa_is_depth_format(format)
> && !_mesa_is_depth_format(baseFormat)
> && !_mesa_is_depthstencil_format(baseFormat)) {
> - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
> + _mesa_error(ctx, GL_INVALID_OPERATION, "%s(format mismatch)", caller);
> return GL_TRUE;
> }
> else if (_mesa_is_stencil_format(format)
> && !ctx->Extensions.ARB_texture_stencil8) {
> - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format=GL_STENCIL_INDEX)");
> + _mesa_error(ctx, GL_INVALID_ENUM, "%s(format=GL_STENCIL_INDEX)", caller);
> return GL_TRUE;
> }
> else if (_mesa_is_ycbcr_format(format)
> && !_mesa_is_ycbcr_format(baseFormat)) {
> - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
> + _mesa_error(ctx, GL_INVALID_OPERATION, "%s(format mismatch)", caller);
> return GL_TRUE;
> }
> else if (_mesa_is_depthstencil_format(format)
> && !_mesa_is_depthstencil_format(baseFormat)) {
> - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
> + _mesa_error(ctx, GL_INVALID_OPERATION, "%s(format mismatch)", caller);
> return GL_TRUE;
> }
> else if (_mesa_is_enum_format_integer(format) !=
> _mesa_is_format_integer(texImage->TexFormat)) {
> - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(format mismatch)");
> + _mesa_error(ctx, GL_INVALID_OPERATION, "%s(format mismatch)", caller);
> return GL_TRUE;
> }
>
> - if (!_mesa_validate_pbo_access(dimensions, &ctx->Pack, texImage->Width,
> - texImage->Height, texImage->Depth,
> - format, type, clientMemSize, pixels)) {
> + return GL_FALSE;
> +}
> +
> +
> +/**
> + * Do error checking related to the PBO and image size.
> + */
> +static bool
> +pbo_error_check(struct gl_context *ctx, GLenum target,
> + GLenum format, GLenum type,
> + GLsizei width, GLsizei height, GLsizei depth,
> + GLsizei bufferSize, void *pixels,
> + const char *caller)
> +{
> + const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2;
> +
> + if (!_mesa_validate_pbo_access(dimensions, &ctx->Pack,
> + width, height, depth,
> + format, type, bufferSize, pixels)) {
> if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
> _mesa_error(ctx, GL_INVALID_OPERATION,
> - "glGetTexImage(out of bounds PBO access)");
> + "%s(out of bounds PBO access)", caller);
> } else {
> _mesa_error(ctx, GL_INVALID_OPERATION,
> - "glGetnTexImageARB(out of bounds access:"
> - " bufSize (%d) is too small)", clientMemSize);
> + "%s(out of bounds access: bufSize (%d) is too small)",
> + caller, bufferSize);
> }
> - return GL_TRUE;
> + return true;
> }
>
> if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
> /* PBO should not be mapped */
> if (_mesa_check_disallowed_mapping(ctx->Pack.BufferObj)) {
> _mesa_error(ctx, GL_INVALID_OPERATION,
> - "glGetTexImage(PBO is mapped)");
> - return GL_TRUE;
> + "%s(PBO is mapped)", caller);
> + return true;
> }
> }
>
> - return GL_FALSE;
> + return false;
> }
>
>
> -
> /**
> * Get texture image. Called by glGetTexImage.
> *
> @@ -932,21 +943,36 @@ _mesa_GetnTexImageARB( GLenum target, GLint level, GLenum format,
>
> FLUSH_VERTICES(ctx, 0);
>
> - if (getteximage_error_check(ctx, target, level, format, type,
> - bufSize, pixels)) {
> + if (!legal_getteximage_target(ctx, target)) {
> + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target=0x%x)", target);
> return;
> }
>
> - if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) {
> - /* not an error, do nothing */
> + texObj = _mesa_get_current_tex_object(ctx, target);
> +
> + if (getteximage_error_check(ctx, texObj, level, format, type,
> + bufSize, pixels, "glGet[n]TexImage")) {
> return;
> }
>
> - texObj = _mesa_get_current_tex_object(ctx, target);
> texImage = _mesa_select_tex_image(ctx, texObj, target, level);
> + if (!texImage) {
> + return; /* no texture image */
> + }
>
> - if (_mesa_is_zero_size_texture(texImage))
> + if (pbo_error_check(ctx, target, format, type,
> + texImage->Width, texImage->Height, texImage->Depth,
> + bufSize, pixels, "glGet[n]TexImage")) {
> return;
> + }
> +
> + if (_mesa_is_zero_size_texture(texImage)) {
> + return; /* nothing to get */
> + }
> +
> + if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) {
> + return; /* not an error, do nothing */
> + }
>
> if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) {
> _mesa_debug(ctx, "glGetTexImage(tex %u) format = %s, w=%d, h=%d,"
> @@ -1110,3 +1136,210 @@ _mesa_GetCompressedTexImage(GLenum target, GLint level, GLvoid *img)
> {
> _mesa_GetnCompressedTexImageARB(target, level, INT_MAX, img);
> }
> +
> +
> +
> +/**
> + * Error-check the offset and size arguments to
> + * glGet[Compressed]TextureSubImage().
> + * \return true if error, false if no error.
> + */
> +static bool
> +dimensions_error_check(struct gl_context *ctx,
> + struct gl_texture_image *texImage,
> + GLint xoffset, GLint yoffset, GLint zoffset,
> + GLsizei width, GLsizei height, GLsizei depth)
> +{
> + const GLenum target = texImage->TexObject->Target;
> +
> + switch (target) {
> + case GL_TEXTURE_1D:
> + if (yoffset != 0) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(1D, yoffset = %d)\n", yoffset);
> + return true;
> + }
> + if (height != 1) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(1D, height = %d)\n", height);
> + return true;
> + }
> + /* fall-through */
> + case GL_TEXTURE_1D_ARRAY:
> + case GL_TEXTURE_2D:
> + case GL_TEXTURE_RECTANGLE:
> + if (zoffset != 0) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(zoffset = %d)\n", zoffset);
> + return true;
> + }
> + if (depth != 1) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(depth = %d)\n", depth);
> + return true;
> + }
> + break;
> + default:
> + ; /* nothing */
> + }
> +
> + if (xoffset < 0) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(xoffset = %d)\n", xoffset);
> + return true;
> + }
> +
> + if (yoffset < 0) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(yoffset = %d)\n", yoffset);
> + return true;
> + }
> +
> + if (zoffset < 0) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(zoffset = %d)\n", zoffset);
> + return true;
> + }
> +
> + if (xoffset + width > texImage->Width) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(xoffset %d + width %d > %u)\n",
> + xoffset, width, texImage->Width);
> + return true;
> + }
> +
> + if (yoffset + height > texImage->Height) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(yoffset %d + height %d > %u)\n",
> + yoffset, height, texImage->Height);
> + return true;
> + }
> +
> + if (zoffset + depth > texImage->Depth) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(zoffset %d + depth %d > %u)\n",
> + zoffset, depth, texImage->Depth);
> + return true;
> + }
> +
> + /* Extra checks for compressed textures */
> + {
> + GLuint bw, bh;
> + _mesa_get_format_block_size(texImage->TexFormat, &bw, &bh);
> + if (bw > 1 || bh > 1) {
> + /* offset must be multiple of block size */
> + if (xoffset % bw != 0) {
> + _mesa_error(ctx, GL_INVALID_OPERATION,
> + "glGetTextureSubImage(xoffset = %d)", xoffset);
> + return true;
> + }
> + if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
> + if (yoffset % bw != 0) {
> + _mesa_error(ctx, GL_INVALID_OPERATION,
> + "glGetTextureSubImage(yoffset = %d)", yoffset);
> + return true;
> + }
> + }
> +
> + /* The size must be a multiple of bw x bh, or we must be using a
> + * offset+size that exactly hits the edge of the image.
> + */
> + if ((width % bw != 0) &&
> + (xoffset + width != (GLint) texImage->Width)) {
> + _mesa_error(ctx, GL_INVALID_OPERATION,
> + "glGetTextureSubImage(width = %d)", width);
> + return true;
> + }
> +
> + if ((height % bh != 0) &&
> + (yoffset + height != (GLint) texImage->Height)) {
> + _mesa_error(ctx, GL_INVALID_OPERATION,
> + "glGetTextureSubImage(height = %d)", height);
> + return true;
> + }
> + }
> + }
> +
> + if (width == 0 || height == 0 || depth == 0) {
> + /* Not an error, but nothing to do. Return 'true' so that the
> + * caller simply returns.
> + */
> + return true;
> + }
> +
> + return false;
> +}
> +
> +
> +
> +void GLAPIENTRY
> +_mesa_GetTextureSubImage(GLuint texture, GLint level,
> + GLint xoffset, GLint yoffset, GLint zoffset,
> + GLsizei width, GLsizei height, GLsizei depth,
> + GLenum format, GLenum type, GLsizei bufSize,
> + void *pixels)
> +{
> + struct gl_texture_object *texObj;
> + struct gl_texture_image *texImage;
> + GLenum target;
> +
> + GET_CURRENT_CONTEXT(ctx);
> +
> + texObj = _mesa_lookup_texture(ctx, texture);
> + if (!texObj) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(invalid texture ID %u\n", texture);
> + return;
> + }
> +
> + /* common error checking */
> + if (getteximage_error_check(ctx, texObj, level, format, type, bufSize,
> + pixels, "glGetTextureSubImage")) {
> + return;
> + }
> +
> + target = texObj->Target;
> + if (target == GL_TEXTURE_CUBE_MAP) {
> + /* convert z to face/target */
> + if (zoffset >= 6) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(cube, zoffset = %d\n", zoffset);
> + return;
> + }
> + if (depth != 1) {
> + _mesa_error(ctx, GL_INVALID_VALUE,
> + "glGetTextureSubImage(cube, depth = %d\n", depth);
> + return;
> + }
> + target = GL_TEXTURE_CUBE_MAP_POSITIVE_X + zoffset;
> + }
> +
> + texImage = _mesa_select_tex_image(ctx, texObj, target, level);
> +
> + /* check dimensions */
> + if (dimensions_error_check(ctx, texImage, xoffset, yoffset, zoffset,
> + width, height, depth)) {
> + return;
> + }
> +
> + if (pbo_error_check(ctx, target, format, type,
> + width, height, depth,
> + bufSize, pixels, "glGetTextureSubImage")) {
> + return;
> + }
> +
> + if (_mesa_is_zero_size_texture(texImage)) {
> + return; /* nothing to get */
> + }
> +
> + if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && pixels == NULL) {
> + return; /* not an error, do nothing */
> + }
> +
> + _mesa_lock_texture(ctx, texObj);
> + {
> + ctx->Driver.GetTexSubImage(ctx, xoffset, yoffset, zoffset, width, height,
> + depth, format, type, pixels, texImage);
> + }
> + _mesa_unlock_texture(ctx, texObj);
> +}
> diff --git a/src/mesa/main/texgetimage.h b/src/mesa/main/texgetimage.h
> index c9af5b9..40f152c 100644
> --- a/src/mesa/main/texgetimage.h
> +++ b/src/mesa/main/texgetimage.h
> @@ -65,4 +65,12 @@ extern void GLAPIENTRY
> _mesa_GetnCompressedTexImageARB(GLenum target, GLint level, GLsizei bufSize,
> GLvoid *img);
>
> +extern void GLAPIENTRY
> +_mesa_GetTextureSubImage(GLuint texture, GLint level,
> + GLint xoffset, GLint yoffset, GLint zoffset,
> + GLsizei width, GLsizei height, GLsizei depth,
> + GLenum format, GLenum type, GLsizei bufSize,
> + void *pixels);
> +
> +
> #endif /* TEXGETIMAGE_H */
> --
> 1.9.1
>
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