diff options
Diffstat (limited to 'src/mesa/main/teximage.c')
| -rw-r--r-- | src/mesa/main/teximage.c | 65 |
1 files changed, 32 insertions, 33 deletions
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c index 1838e41e486..4c48370d9de 100644 --- a/src/mesa/main/teximage.c +++ b/src/mesa/main/teximage.c @@ -2042,30 +2042,20 @@ copytexture_error_check( GLcontext *ctx, GLuint dimensions, /** * Test glCopyTexSubImage[12]D() parameters for errors. + * Note that this is the first part of error checking. + * See also copytexsubimage_error_check2() below for the second part. * * \param ctx GL context. * \param dimensions texture image dimensions (must be 1, 2 or 3). * \param target texture target given by the user. * \param level image level given by the user. - * \param xoffset sub-image x offset given by the user. - * \param yoffset sub-image y offset given by the user. - * \param zoffset sub-image z offset given by the user. - * \param width image width given by the user. - * \param height image height given by the user. * * \return GL_TRUE if an error was detected, or GL_FALSE if no errors. - * - * Verifies each of the parameters against the constants specified in - * __GLcontextRec::Const and the supported extensions, and according to the - * OpenGL specification. */ static GLboolean -copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions, - GLenum target, GLint level, - GLint xoffset, GLint yoffset, GLint zoffset, - GLsizei width, GLsizei height) +copytexsubimage_error_check1( GLcontext *ctx, GLuint dimensions, + GLenum target, GLint level) { - /* Check target */ /* Check that the source buffer is complete */ if (ctx->ReadBuffer->Name) { _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer); @@ -2076,6 +2066,7 @@ copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions, } } + /* Check target */ if (dimensions == 1) { if (target != GL_TEXTURE_1D) { _mesa_error( ctx, GL_INVALID_ENUM, "glCopyTexSubImage1D(target)" ); @@ -2123,21 +2114,18 @@ copytexsubimage_error_check( GLcontext *ctx, GLuint dimensions, return GL_TRUE; } - /* Check size */ - if (width < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, - "glCopyTexSubImage%dD(width=%d)", dimensions, width); - return GL_TRUE; - } - if (dimensions > 1 && height < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, - "glCopyTexSubImage%dD(height=%d)", dimensions, height); - return GL_TRUE; - } - return GL_FALSE; } + +/** + * Second part of error checking for glCopyTexSubImage[12]D(). + * \param xoffset sub-image x offset given by the user. + * \param yoffset sub-image y offset given by the user. + * \param zoffset sub-image z offset given by the user. + * \param width image width given by the user. + * \param height image height given by the user. + */ static GLboolean copytexsubimage_error_check2( GLcontext *ctx, GLuint dimensions, GLenum target, GLint level, @@ -2145,6 +2133,7 @@ copytexsubimage_error_check2( GLcontext *ctx, GLuint dimensions, GLsizei width, GLsizei height, const struct gl_texture_image *teximage ) { + /* check that dest tex image exists */ if (!teximage) { _mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage%dD(undefined texture level: %d)", @@ -2152,6 +2141,19 @@ copytexsubimage_error_check2( GLcontext *ctx, GLuint dimensions, return GL_TRUE; } + /* Check size */ + if (width < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(width=%d)", dimensions, width); + return GL_TRUE; + } + if (dimensions > 1 && height < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glCopyTexSubImage%dD(height=%d)", dimensions, height); + return GL_TRUE; + } + + /* check x/y offsets */ if (xoffset < -((GLint)teximage->Border)) { _mesa_error(ctx, GL_INVALID_VALUE, "glCopyTexSubImage%dD(xoffset=%d)", dimensions, xoffset); @@ -2176,6 +2178,7 @@ copytexsubimage_error_check2( GLcontext *ctx, GLuint dimensions, } } + /* check z offset */ if (dimensions > 2) { if (zoffset < -((GLint)teximage->Border)) { _mesa_error(ctx, GL_INVALID_VALUE, @@ -3050,13 +3053,11 @@ _mesa_CopyTexSubImage1D( GLenum target, GLint level, _mesa_update_state(ctx); #if FEATURE_convolve - /* XXX should test internal format */ _mesa_adjust_image_for_convolution(ctx, 1, &postConvWidth, NULL); #endif - if (copytexsubimage_error_check(ctx, 1, target, level, - xoffset, 0, 0, postConvWidth, 1)) + if (copytexsubimage_error_check1(ctx, 1, target, level)) return; texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; @@ -3110,8 +3111,7 @@ _mesa_CopyTexSubImage2D( GLenum target, GLint level, _mesa_adjust_image_for_convolution(ctx, 2, &postConvWidth, &postConvHeight); #endif - if (copytexsubimage_error_check(ctx, 2, target, level, xoffset, yoffset, 0, - postConvWidth, postConvHeight)) + if (copytexsubimage_error_check1(ctx, 2, target, level)) return; texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; @@ -3164,8 +3164,7 @@ _mesa_CopyTexSubImage3D( GLenum target, GLint level, _mesa_adjust_image_for_convolution(ctx, 2, &postConvWidth, &postConvHeight); #endif - if (copytexsubimage_error_check(ctx, 3, target, level, xoffset, yoffset, - zoffset, postConvWidth, postConvHeight)) + if (copytexsubimage_error_check1(ctx, 3, target, level)) return; texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; |