diff options
| -rw-r--r-- | src/mesa/main/readpix.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/mesa/main/readpix.c b/src/mesa/main/readpix.c index 5b80e9a8ba1..d9c840e6197 100644 --- a/src/mesa/main/readpix.c +++ b/src/mesa/main/readpix.c @@ -674,12 +674,59 @@ _mesa_readpixels(struct gl_context *ctx, } +static GLenum +read_pixels_es3_error_check(GLenum format, GLenum type, + const struct gl_renderbuffer *rb) +{ + const GLenum internalFormat = rb->InternalFormat; + const GLenum data_type = _mesa_get_format_datatype(rb->Format); + GLboolean is_unsigned_int = GL_FALSE; + GLboolean is_signed_int = GL_FALSE; + + if (!_mesa_is_color_format(internalFormat)) { + return GL_INVALID_OPERATION; + } + + is_unsigned_int = _mesa_is_enum_format_unsigned_int(internalFormat); + if (!is_unsigned_int) { + is_signed_int = _mesa_is_enum_format_signed_int(internalFormat); + } + + switch (format) { + case GL_RGBA: + if (type == GL_UNSIGNED_BYTE && data_type == GL_UNSIGNED_NORMALIZED) + return GL_NO_ERROR; + if (internalFormat == GL_RGB10_A2 && + type == GL_UNSIGNED_INT_2_10_10_10_REV) + return GL_NO_ERROR; + if (internalFormat == GL_RGB10_A2UI && type == GL_UNSIGNED_BYTE) + return GL_NO_ERROR; + break; + case GL_BGRA: + /* GL_EXT_read_format_bgra */ + if (type == GL_UNSIGNED_BYTE || + type == GL_UNSIGNED_SHORT_4_4_4_4_REV || + type == GL_UNSIGNED_SHORT_1_5_5_5_REV) + return GL_NO_ERROR; + break; + case GL_RGBA_INTEGER: + if ((is_signed_int && type == GL_INT) || + (is_unsigned_int && type == GL_UNSIGNED_INT)) + return GL_NO_ERROR; + break; + } + + return GL_INVALID_OPERATION; +} + + void GLAPIENTRY _mesa_ReadnPixelsARB( GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei bufSize, GLvoid *pixels ) { GLenum err = GL_NO_ERROR; + struct gl_renderbuffer *rb; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); @@ -699,6 +746,13 @@ _mesa_ReadnPixelsARB( GLint x, GLint y, GLsizei width, GLsizei height, return; } + rb = _mesa_get_read_renderbuffer_for_format(ctx, format); + if (rb == NULL) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glReadPixels(read buffer)"); + return; + } + /* OpenGL ES 1.x and OpenGL ES 2.0 impose additional restrictions on the * combinations of format and type that can be used. * @@ -715,6 +769,8 @@ _mesa_ReadnPixelsARB( GLint x, GLint y, GLsizei width, GLsizei height, err = GL_INVALID_OPERATION; } } + } else { + err = read_pixels_es3_error_check(format, type, rb); } if (err == GL_NO_ERROR && (format == GL_DEPTH_COMPONENT |