static GLenum
_mesa_generic_type_for_internal_format(GLenum internalFormat)
{
if (_mesa_is_enum_format_unsigned_int(internalFormat))
return GL_UNSIGNED_BYTE;
else if (_mesa_is_enum_format_signed_int(internalFormat))
return GL_BYTE;
else
return GL_FLOAT;
}
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_FLOAT && data_type == GL_FLOAT)
return GL_NO_ERROR; /* EXT_color_buffer_float */
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;
}
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;
GLboolean is_float_depth = (internalFormat == GL_DEPTH_COMPONENT32F) ||
(internalFormat == GL_DEPTH32F_STENCIL8);
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_FLOAT && data_type == GL_FLOAT)
return GL_NO_ERROR; /* EXT_color_buffer_float */
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;
case GL_DEPTH_STENCIL:
switch (type) {
case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
if (is_float_depth)
return GL_NO_ERROR;
break;
case GL_UNSIGNED_INT_24_8:
if (!is_float_depth)
return GL_NO_ERROR;
break;
default:
return GL_INVALID_ENUM;
}
break;
case GL_DEPTH_COMPONENT:
switch (type) {
case GL_FLOAT:
if (is_float_depth)
return GL_NO_ERROR;
break;
case GL_UNSIGNED_SHORT:
case GL_UNSIGNED_INT:
case GL_UNSIGNED_INT_24_8:
if (!is_float_depth)
return GL_NO_ERROR;
break;
default:
return GL_INVALID_ENUM;
}
break;
case GL_STENCIL_INDEX:
switch (type) {
case GL_UNSIGNED_BYTE:
return GL_NO_ERROR;
default:
return GL_INVALID_ENUM;
}
break;
}
return GL_INVALID_OPERATION;
}
