From 63396ce4c0fe067f69d1b53d0408627a421c4678 Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Sun, 10 Jun 2012 19:06:23 -0700 Subject: [PATCH] mesa: Add explicit target checking to Get[Compressed]TexImage(). Previously, they relied on _mesa_max_texture_levels() for texture target error checking. This was somewhat dodgy, as _mesa_max_texture_levels() is called in seven diferent places, not all of which necessarily accept the same list of targets. I copied the list of legal targets from _mesa_max_texture_levels() but removed the proxy targets, as both functions explicitly rejected those targets. This changes the order in which we check errors, which could change whether we return INVALID_VALUE or INVALID_ENUM. However, it shouldn't change the list of accepted targets. Signed-off-by: Kenneth Graunke Reviewed-by: Ian Romanick --- src/mesa/main/texgetimage.c | 45 ++++++++++++++++++++++++++++--------- 1 file changed, 35 insertions(+), 10 deletions(-) diff --git a/src/mesa/main/texgetimage.c b/src/mesa/main/texgetimage.c index 4cd87c6451e..ee43d0d89b2 100644 --- a/src/mesa/main/texgetimage.c +++ b/src/mesa/main/texgetimage.c @@ -642,6 +642,36 @@ _mesa_get_compressed_teximage(struct gl_context *ctx, } +/** + * Validate the texture target enum supplied to glTexImage or + * glCompressedTexImage. + */ +static GLboolean +legal_getteximage_target(struct gl_context *ctx, GLenum target) +{ + switch (target) { + case GL_TEXTURE_1D: + case GL_TEXTURE_2D: + case GL_TEXTURE_3D: + return GL_TRUE; + case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: + return ctx->Extensions.ARB_texture_cube_map; + case GL_TEXTURE_RECTANGLE_NV: + return ctx->Extensions.NV_texture_rectangle; + case GL_TEXTURE_1D_ARRAY_EXT: + case GL_TEXTURE_2D_ARRAY_EXT: + return (ctx->Extensions.MESA_texture_array || + ctx->Extensions.EXT_texture_array); + default: + return GL_FALSE; + } +} + /** * Do error checking for a glGetTexImage() call. @@ -658,11 +688,12 @@ getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level, const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2; GLenum baseFormat, err; - if (maxLevels == 0) { + 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)" ); return GL_TRUE; @@ -676,7 +707,7 @@ getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level, texObj = _mesa_get_current_tex_object(ctx, target); - if (!texObj || _mesa_is_proxy_texture(target)) { + if (!texObj) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target)"); return GL_TRUE; } @@ -820,25 +851,19 @@ getcompressedteximage_error_check(struct gl_context *ctx, GLenum target, const GLint maxLevels = _mesa_max_texture_levels(ctx, target); GLuint compressedSize; - if (maxLevels == 0) { + if (!legal_getteximage_target(ctx, target)) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImage(target=0x%x)", 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; } - if (_mesa_is_proxy_texture(target)) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetCompressedTexImageARB(bad target = %s)", - _mesa_lookup_enum_by_nr(target)); - return GL_TRUE; - } - texObj = _mesa_get_current_tex_object(ctx, target); if (!texObj) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetCompressedTexImageARB(target)"); -- 2.30.2