diff options
author | Laura Ekstrand <[email protected]> | 2015-01-06 11:39:04 -0800 |
---|---|---|
committer | Laura Ekstrand <[email protected]> | 2015-01-08 11:37:29 -0800 |
commit | 8b5482ec035d0d8ad36b08f33fcd20f15ea39000 (patch) | |
tree | 7f3cd8785d43daa14bbdfce0808896afa4c551ed /src/mesa/main/texgetimage.c | |
parent | a739bdeb1d294041984e05046043097a0d9fa833 (diff) |
main: Added entry point for glGetCompressedTextureImage.
Reviewed-by: Anuj Phogat <[email protected]>
Diffstat (limited to 'src/mesa/main/texgetimage.c')
-rw-r--r-- | src/mesa/main/texgetimage.c | 166 |
1 files changed, 121 insertions, 45 deletions
diff --git a/src/mesa/main/texgetimage.c b/src/mesa/main/texgetimage.c index db4fc01f057..0a84a3985f2 100644 --- a/src/mesa/main/texgetimage.c +++ b/src/mesa/main/texgetimage.c @@ -1129,45 +1129,35 @@ _mesa_GetTextureImage(GLuint texture, GLint level, GLenum format, * \return GL_TRUE if any error, GL_FALSE if no errors. */ static GLboolean -getcompressedteximage_error_check(struct gl_context *ctx, GLenum target, - GLint level, GLsizei clientMemSize, GLvoid *img) +getcompressedteximage_error_check(struct gl_context *ctx, + struct gl_texture_image *texImage, + GLenum target, + GLint level, GLsizei clientMemSize, + GLvoid *img, bool dsa) { - struct gl_texture_object *texObj; - struct gl_texture_image *texImage; + assert(texImage); const GLint maxLevels = _mesa_max_texture_levels(ctx, target); GLuint compressedSize, dimensions; + const char *suffix = dsa ? "ture" : ""; - if (!legal_getteximage_target(ctx, target, false)) { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImage(target=0x%x)", - target); + if (!legal_getteximage_target(ctx, target, dsa)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetCompressedTex%sImage(target=%s)", suffix, + _mesa_lookup_enum_by_nr(target)); return GL_TRUE; } assert(maxLevels != 0); if (level < 0 || level >= maxLevels) { _mesa_error(ctx, GL_INVALID_VALUE, - "glGetCompressedTexImageARB(bad level = %d)", level); - return GL_TRUE; - } - - texObj = _mesa_get_current_tex_object(ctx, target); - if (!texObj) { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB(target)"); - return GL_TRUE; - } - - texImage = _mesa_select_tex_image(texObj, target, level); - - if (!texImage) { - /* probably invalid mipmap level */ - _mesa_error(ctx, GL_INVALID_VALUE, - "glGetCompressedTexImageARB(level)"); + "glGetCompressedTex%sImage(bad level = %d)", suffix, level); return GL_TRUE; } if (!_mesa_is_format_compressed(texImage->TexFormat)) { _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetCompressedTexImageARB(texture is not compressed)"); + "glGetCompressedTex%sImage(texture is not compressed)", + suffix); return GL_TRUE; } @@ -1179,8 +1169,9 @@ getcompressedteximage_error_check(struct gl_context *ctx, GLenum target, /* Check for invalid pixel storage modes */ dimensions = _mesa_get_texture_dimensions(texImage->TexObject->Target); if (!_mesa_compressed_pixel_storage_error_check(ctx, dimensions, - &ctx->Pack, - "glGetCompressedTexImageARB")) { + &ctx->Pack, dsa ? + "glGetCompressedTextureImage": + "glGetCompressedTexImage")) { return GL_TRUE; } @@ -1188,8 +1179,9 @@ getcompressedteximage_error_check(struct gl_context *ctx, GLenum target, /* do bounds checking on writing to client memory */ if (clientMemSize < (GLsizei) compressedSize) { _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetnCompressedTexImageARB(out of bounds access:" - " bufSize (%d) is too small)", clientMemSize); + "%s(out of bounds access: bufSize (%d) is too small)", + dsa ? "glGetCompressedTextureImage" : + "glGetnCompressedTexImageARB", clientMemSize); return GL_TRUE; } } else { @@ -1197,14 +1189,15 @@ getcompressedteximage_error_check(struct gl_context *ctx, GLenum target, if ((const GLubyte *) img + compressedSize > (const GLubyte *) ctx->Pack.BufferObj->Size) { _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetCompressedTexImage(out of bounds PBO access)"); + "glGetCompressedTex%sImage(out of bounds PBO access)", + suffix); return GL_TRUE; } /* make sure PBO is not mapped */ if (_mesa_check_disallowed_mapping(ctx->Pack.BufferObj)) { _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetCompressedTexImage(PBO is mapped)"); + "glGetCompressedTex%sImage(PBO is mapped)", suffix); return GL_TRUE; } } @@ -1212,49 +1205,132 @@ getcompressedteximage_error_check(struct gl_context *ctx, GLenum target, return GL_FALSE; } - -void GLAPIENTRY -_mesa_GetnCompressedTexImageARB(GLenum target, GLint level, GLsizei bufSize, - GLvoid *img) +/** Implements glGetnCompressedTexImageARB, glGetCompressedTexImage, and + * glGetCompressedTextureImage. + * + * texImage must be passed in because glGetCompressedTexImage must handle the + * target GL_TEXTURE_CUBE_MAP. + */ +void +_mesa_get_compressed_texture_image(struct gl_context *ctx, + struct gl_texture_object *texObj, + struct gl_texture_image *texImage, + GLenum target, GLint level, + GLsizei bufSize, GLvoid *pixels, + bool dsa) { - struct gl_texture_object *texObj; - struct gl_texture_image *texImage; - GET_CURRENT_CONTEXT(ctx); + assert(texObj); + assert(texImage); FLUSH_VERTICES(ctx, 0); - if (getcompressedteximage_error_check(ctx, target, level, bufSize, img)) { + if (getcompressedteximage_error_check(ctx, texImage, target, level, + bufSize, pixels, dsa)) { return; } - if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !img) { + if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) { /* not an error, do nothing */ return; } - texObj = _mesa_get_current_tex_object(ctx, target); - texImage = _mesa_select_tex_image(texObj, target, level); - if (_mesa_is_zero_size_texture(texImage)) return; if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) { _mesa_debug(ctx, - "glGetCompressedTexImage(tex %u) format = %s, w=%d, h=%d\n", - texObj->Name, + "glGetCompressedTex%sImage(tex %u) format = %s, w=%d, h=%d\n", + dsa ? "ture" : "", texObj->Name, _mesa_get_format_name(texImage->TexFormat), texImage->Width, texImage->Height); } _mesa_lock_texture(ctx, texObj); { - ctx->Driver.GetCompressedTexImage(ctx, texImage, img); + ctx->Driver.GetCompressedTexImage(ctx, texImage, pixels); } _mesa_unlock_texture(ctx, texObj); } void GLAPIENTRY +_mesa_GetnCompressedTexImageARB(GLenum target, GLint level, GLsizei bufSize, + GLvoid *img) +{ + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GET_CURRENT_CONTEXT(ctx); + + texObj = _mesa_get_current_tex_object(ctx, target); + if (!texObj) + return; + + texImage = _mesa_select_tex_image(texObj, target, level); + if (!texImage) + return; + + _mesa_get_compressed_texture_image(ctx, texObj, texImage, target, level, + bufSize, img, false); +} + +void GLAPIENTRY _mesa_GetCompressedTexImage(GLenum target, GLint level, GLvoid *img) { _mesa_GetnCompressedTexImageARB(target, level, INT_MAX, img); } + +/** + * Get compressed texture image. + * + * \param texture texture name. + * \param level image level. + * \param bufSize size of the pixels data buffer. + * \param pixels returned pixel data. + */ +void GLAPIENTRY +_mesa_GetCompressedTextureImage(GLuint texture, GLint level, + GLsizei bufSize, GLvoid *pixels) +{ + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + int i; + GLint image_stride; + GET_CURRENT_CONTEXT(ctx); + + texObj = _mesa_lookup_texture_err(ctx, texture, + "glGetCompressedTextureImage"); + if (!texObj) + return; + + /* Must handle special case GL_TEXTURE_CUBE_MAP. */ + if (texObj->Target == GL_TEXTURE_CUBE_MAP) { + assert(texObj->NumLayers >= 6); + + /* Copy each face. */ + for (i = 0; i < 6; ++i) { + texImage = texObj->Image[i][level]; + if (!texImage) + return; + + _mesa_get_compressed_texture_image(ctx, texObj, texImage, + texObj->Target, level, + bufSize, pixels, true); + + /* Compressed images don't have a client format */ + image_stride = _mesa_format_image_size(texImage->TexFormat, + texImage->Width, + texImage->Height, 1); + + pixels += image_stride; + bufSize -= image_stride; + } + } + else { + texImage = _mesa_select_tex_image(texObj, texObj->Target, level); + if (!texImage) + return; + + _mesa_get_compressed_texture_image(ctx, texObj, texImage, + texObj->Target, level, bufSize, + pixels, true); + } +} |