//
// Copyright (c) 2013-2014 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// validationES3.cpp: Validation functions for OpenGL ES 3.0 entry point parameters
#include "libGLESv2/validationES3.h"
#include "libGLESv2/validationES.h"
#include "libGLESv2/Context.h"
#include "libGLESv2/Texture.h"
#include "libGLESv2/Framebuffer.h"
#include "libGLESv2/Renderbuffer.h"
#include "libGLESv2/formatutils.h"
#include "libGLESv2/main.h"
#include "libGLESv2/FramebufferAttachment.h"
#include "common/mathutil.h"
namespace gl
{
struct ES3FormatCombination
{
GLenum internalFormat;
GLenum format;
GLenum type;
};
bool operator<(const ES3FormatCombination& a, const ES3FormatCombination& b)
{
return memcmp(&a, &b, sizeof(ES3FormatCombination)) < 0;
}
typedef std::set<ES3FormatCombination> ES3FormatCombinationSet;
static inline void InsertES3FormatCombo(ES3FormatCombinationSet *set, GLenum internalFormat, GLenum format, GLenum type)
{
ES3FormatCombination info;
info.internalFormat = internalFormat;
info.format = format;
info.type = type;
set->insert(info);
}
ES3FormatCombinationSet BuildES3FormatSet()
{
ES3FormatCombinationSet set;
// Format combinations from ES 3.0.1 spec, table 3.2
// | Internal format | Format | Type |
// | | | |
InsertES3FormatCombo(&set, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_RGBA4, GL_RGBA, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_SRGB8_ALPHA8, GL_RGBA, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_RGBA8_SNORM, GL_RGBA, GL_BYTE );
InsertES3FormatCombo(&set, GL_RGBA4, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4 );
InsertES3FormatCombo(&set, GL_RGB10_A2, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV );
InsertES3FormatCombo(&set, GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV );
InsertES3FormatCombo(&set, GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1 );
InsertES3FormatCombo(&set, GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT_OES );
InsertES3FormatCombo(&set, GL_RGBA32F, GL_RGBA, GL_FLOAT );
InsertES3FormatCombo(&set, GL_RGBA16F, GL_RGBA, GL_FLOAT );
InsertES3FormatCombo(&set, GL_RGBA8UI, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_RGBA8I, GL_RGBA_INTEGER, GL_BYTE );
InsertES3FormatCombo(&set, GL_RGBA16UI, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT );
InsertES3FormatCombo(&set, GL_RGBA16I, GL_RGBA_INTEGER, GL_SHORT );
InsertES3FormatCombo(&set, GL_RGBA32UI, GL_RGBA_INTEGER, GL_UNSIGNED_INT );
InsertES3FormatCombo(&set, GL_RGBA32I, GL_RGBA_INTEGER, GL_INT );
InsertES3FormatCombo(&set, GL_RGB10_A2UI, GL_RGBA_INTEGER, GL_UNSIGNED_INT_2_10_10_10_REV );
InsertES3FormatCombo(&set, GL_RGB8, GL_RGB, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_RGB565, GL_RGB, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_SRGB8, GL_RGB, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_RGB8_SNORM, GL_RGB, GL_BYTE );
InsertES3FormatCombo(&set, GL_RGB565, GL_RGB, GL_UNSIGNED_SHORT_5_6_5 );
InsertES3FormatCombo(&set, GL_R11F_G11F_B10F, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV );
InsertES3FormatCombo(&set, GL_RGB9_E5, GL_RGB, GL_UNSIGNED_INT_5_9_9_9_REV );
InsertES3FormatCombo(&set, GL_RGB16F, GL_RGB, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_RGB16F, GL_RGB, GL_HALF_FLOAT_OES );
InsertES3FormatCombo(&set, GL_R11F_G11F_B10F, GL_RGB, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_R11F_G11F_B10F, GL_RGB, GL_HALF_FLOAT_OES );
InsertES3FormatCombo(&set, GL_RGB9_E5, GL_RGB, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_RGB9_E5, GL_RGB, GL_HALF_FLOAT_OES );
InsertES3FormatCombo(&set, GL_RGB32F, GL_RGB, GL_FLOAT );
InsertES3FormatCombo(&set, GL_RGB16F, GL_RGB, GL_FLOAT );
InsertES3FormatCombo(&set, GL_R11F_G11F_B10F, GL_RGB, GL_FLOAT );
InsertES3FormatCombo(&set, GL_RGB9_E5, GL_RGB, GL_FLOAT );
InsertES3FormatCombo(&set, GL_RGB8UI, GL_RGB_INTEGER, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_RGB8I, GL_RGB_INTEGER, GL_BYTE );
InsertES3FormatCombo(&set, GL_RGB16UI, GL_RGB_INTEGER, GL_UNSIGNED_SHORT );
InsertES3FormatCombo(&set, GL_RGB16I, GL_RGB_INTEGER, GL_SHORT );
InsertES3FormatCombo(&set, GL_RGB32UI, GL_RGB_INTEGER, GL_UNSIGNED_INT );
InsertES3FormatCombo(&set, GL_RGB32I, GL_RGB_INTEGER, GL_INT );
InsertES3FormatCombo(&set, GL_RG8, GL_RG, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_RG8_SNORM, GL_RG, GL_BYTE );
InsertES3FormatCombo(&set, GL_RG16F, GL_RG, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_RG16F, GL_RG, GL_HALF_FLOAT_OES );
InsertES3FormatCombo(&set, GL_RG32F, GL_RG, GL_FLOAT );
InsertES3FormatCombo(&set, GL_RG16F, GL_RG, GL_FLOAT );
InsertES3FormatCombo(&set, GL_RG8UI, GL_RG_INTEGER, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_RG8I, GL_RG_INTEGER, GL_BYTE );
InsertES3FormatCombo(&set, GL_RG16UI, GL_RG_INTEGER, GL_UNSIGNED_SHORT );
InsertES3FormatCombo(&set, GL_RG16I, GL_RG_INTEGER, GL_SHORT );
InsertES3FormatCombo(&set, GL_RG32UI, GL_RG_INTEGER, GL_UNSIGNED_INT );
InsertES3FormatCombo(&set, GL_RG32I, GL_RG_INTEGER, GL_INT );
InsertES3FormatCombo(&set, GL_R8, GL_RED, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_R8_SNORM, GL_RED, GL_BYTE );
InsertES3FormatCombo(&set, GL_R16F, GL_RED, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_R16F, GL_RED, GL_HALF_FLOAT_OES );
InsertES3FormatCombo(&set, GL_R32F, GL_RED, GL_FLOAT );
InsertES3FormatCombo(&set, GL_R16F, GL_RED, GL_FLOAT );
InsertES3FormatCombo(&set, GL_R8UI, GL_RED_INTEGER, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_R8I, GL_RED_INTEGER, GL_BYTE );
InsertES3FormatCombo(&set, GL_R16UI, GL_RED_INTEGER, GL_UNSIGNED_SHORT );
InsertES3FormatCombo(&set, GL_R16I, GL_RED_INTEGER, GL_SHORT );
InsertES3FormatCombo(&set, GL_R32UI, GL_RED_INTEGER, GL_UNSIGNED_INT );
InsertES3FormatCombo(&set, GL_R32I, GL_RED_INTEGER, GL_INT );
// Unsized formats
InsertES3FormatCombo(&set, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_RGBA, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4 );
InsertES3FormatCombo(&set, GL_RGBA, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1 );
InsertES3FormatCombo(&set, GL_RGB, GL_RGB, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_RGB, GL_RGB, GL_UNSIGNED_SHORT_5_6_5 );
InsertES3FormatCombo(&set, GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_LUMINANCE, GL_LUMINANCE, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_ALPHA, GL_ALPHA, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_SRGB_ALPHA_EXT, GL_SRGB_ALPHA_EXT, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_SRGB_EXT, GL_SRGB_EXT, GL_UNSIGNED_BYTE );
// Depth stencil formats
InsertES3FormatCombo(&set, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT );
InsertES3FormatCombo(&set, GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT );
InsertES3FormatCombo(&set, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT );
InsertES3FormatCombo(&set, GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT, GL_FLOAT );
InsertES3FormatCombo(&set, GL_DEPTH24_STENCIL8, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8 );
InsertES3FormatCombo(&set, GL_DEPTH32F_STENCIL8, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
// From GL_EXT_sRGB
InsertES3FormatCombo(&set, GL_SRGB8_ALPHA8_EXT, GL_SRGB_ALPHA_EXT, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_SRGB8, GL_SRGB_EXT, GL_UNSIGNED_BYTE );
// From GL_OES_texture_float
InsertES3FormatCombo(&set, GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_FLOAT );
InsertES3FormatCombo(&set, GL_LUMINANCE, GL_LUMINANCE, GL_FLOAT );
InsertES3FormatCombo(&set, GL_ALPHA, GL_ALPHA, GL_FLOAT );
// From GL_OES_texture_half_float
InsertES3FormatCombo(&set, GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT_OES );
InsertES3FormatCombo(&set, GL_LUMINANCE, GL_LUMINANCE, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_LUMINANCE, GL_LUMINANCE, GL_HALF_FLOAT_OES );
InsertES3FormatCombo(&set, GL_ALPHA, GL_ALPHA, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_ALPHA, GL_ALPHA, GL_HALF_FLOAT_OES );
// From GL_EXT_texture_format_BGRA8888
InsertES3FormatCombo(&set, GL_BGRA_EXT, GL_BGRA_EXT, GL_UNSIGNED_BYTE );
// From GL_EXT_texture_storage
// | Internal format | Format | Type |
// | | | |
InsertES3FormatCombo(&set, GL_ALPHA8_EXT, GL_ALPHA, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_LUMINANCE8_EXT, GL_LUMINANCE, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_LUMINANCE8_ALPHA8_EXT, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_ALPHA32F_EXT, GL_ALPHA, GL_FLOAT );
InsertES3FormatCombo(&set, GL_LUMINANCE32F_EXT, GL_LUMINANCE, GL_FLOAT );
InsertES3FormatCombo(&set, GL_LUMINANCE_ALPHA32F_EXT, GL_LUMINANCE_ALPHA, GL_FLOAT );
InsertES3FormatCombo(&set, GL_ALPHA16F_EXT, GL_ALPHA, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_ALPHA16F_EXT, GL_ALPHA, GL_HALF_FLOAT_OES );
InsertES3FormatCombo(&set, GL_LUMINANCE16F_EXT, GL_LUMINANCE, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_LUMINANCE16F_EXT, GL_LUMINANCE, GL_HALF_FLOAT_OES );
InsertES3FormatCombo(&set, GL_LUMINANCE_ALPHA16F_EXT, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT );
InsertES3FormatCombo(&set, GL_LUMINANCE_ALPHA16F_EXT, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT_OES );
// From GL_EXT_texture_storage and GL_EXT_texture_format_BGRA8888
InsertES3FormatCombo(&set, GL_BGRA8_EXT, GL_BGRA_EXT, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_BGRA4_ANGLEX, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT);
InsertES3FormatCombo(&set, GL_BGRA4_ANGLEX, GL_BGRA_EXT, GL_UNSIGNED_BYTE );
InsertES3FormatCombo(&set, GL_BGR5_A1_ANGLEX, GL_BGRA_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT);
InsertES3FormatCombo(&set, GL_BGR5_A1_ANGLEX, GL_BGRA_EXT, GL_UNSIGNED_BYTE );
// From GL_ANGLE_depth_texture
InsertES3FormatCombo(&set, GL_DEPTH_COMPONENT32_OES, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT_24_8_OES );
// Compressed formats
// From ES 3.0.1 spec, table 3.16
// | Internal format | Format | Type |
// | | | |
InsertES3FormatCombo(&set, GL_COMPRESSED_R11_EAC, GL_COMPRESSED_R11_EAC, GL_UNSIGNED_BYTE);
InsertES3FormatCombo(&set, GL_COMPRESSED_R11_EAC, GL_COMPRESSED_R11_EAC, GL_UNSIGNED_BYTE);
InsertES3FormatCombo(&set, GL_COMPRESSED_SIGNED_R11_EAC, GL_COMPRESSED_SIGNED_R11_EAC, GL_UNSIGNED_BYTE);
InsertES3FormatCombo(&set, GL_COMPRESSED_RG11_EAC, GL_COMPRESSED_RG11_EAC, GL_UNSIGNED_BYTE);
InsertES3FormatCombo(&set, GL_COMPRESSED_SIGNED_RG11_EAC, GL_COMPRESSED_SIGNED_RG11_EAC, GL_UNSIGNED_BYTE);
InsertES3FormatCombo(&set, GL_COMPRESSED_RGB8_ETC2, GL_COMPRESSED_RGB8_ETC2, GL_UNSIGNED_BYTE);
InsertES3FormatCombo(&set, GL_COMPRESSED_SRGB8_ETC2, GL_COMPRESSED_SRGB8_ETC2, GL_UNSIGNED_BYTE);
InsertES3FormatCombo(&set, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_UNSIGNED_BYTE);
InsertES3FormatCombo(&set, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_UNSIGNED_BYTE);
InsertES3FormatCombo(&set, GL_COMPRESSED_RGBA8_ETC2_EAC, GL_COMPRESSED_RGBA8_ETC2_EAC, GL_UNSIGNED_BYTE);
InsertES3FormatCombo(&set, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, GL_UNSIGNED_BYTE);
// From GL_EXT_texture_compression_dxt1
InsertES3FormatCombo(&set, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE);
InsertES3FormatCombo(&set, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE);
// From GL_ANGLE_texture_compression_dxt3
InsertES3FormatCombo(&set, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, GL_UNSIGNED_BYTE);
// From GL_ANGLE_texture_compression_dxt5
InsertES3FormatCombo(&set, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, GL_UNSIGNED_BYTE);
return set;
}
static bool ValidateTexImageFormatCombination(gl::Context *context, GLenum internalFormat, GLenum format, GLenum type)
{
// Note: dEQP 2013.4 expects an INVALID_VALUE error for TexImage3D with an invalid
// internal format. (dEQP-GLES3.functional.negative_api.texture.teximage3d)
const gl::InternalFormat &formatInfo = gl::GetInternalFormatInfo(internalFormat);
if (!formatInfo.textureSupport(context->getClientVersion(), context->getExtensions()))
{
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
// The type and format are valid if any supported internal format has that type and format
bool formatSupported = false;
bool typeSupported = false;
static const ES3FormatCombinationSet es3FormatSet = BuildES3FormatSet();
for (ES3FormatCombinationSet::const_iterator i = es3FormatSet.begin(); i != es3FormatSet.end(); i++)
{
if (i->format == format || i->type == type)
{
const gl::InternalFormat &info = gl::GetInternalFormatInfo(i->internalFormat);
bool supported = info.textureSupport(context->getClientVersion(), context->getExtensions());
if (supported && i->type == type)
{
typeSupported = true;
}
if (supported && i->format == format)
{
formatSupported = true;
}
// Early-out if both type and format are supported now
if (typeSupported && formatSupported)
{
break;
}
}
}
if (!typeSupported || !formatSupported)
{
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
// Check if this is a valid format combination to load texture data
ES3FormatCombination searchFormat;
searchFormat.internalFormat = internalFormat;
searchFormat.format = format;
searchFormat.type = type;
if (es3FormatSet.find(searchFormat) == es3FormatSet.end())
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
return true;
}
bool ValidateES3TexImageParameters(Context *context, GLenum target, GLint level, GLenum internalformat, bool isCompressed, bool isSubImage,
GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLenum format, GLenum type, const GLvoid *pixels)
{
if (!ValidTexture2DDestinationTarget(context, target))
{
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
// Validate image size
if (!ValidImageSize(context, target, level, width, height, depth))
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
// Verify zero border
if (border != 0)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
if (xoffset < 0 || yoffset < 0 || zoffset < 0 ||
std::numeric_limits<GLsizei>::max() - xoffset < width ||
std::numeric_limits<GLsizei>::max() - yoffset < height ||
std::numeric_limits<GLsizei>::max() - zoffset < depth)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
const gl::Caps &caps = context->getCaps();
gl::Texture *texture = NULL;
bool textureCompressed = false;
GLenum textureInternalFormat = GL_NONE;
GLint textureLevelWidth = 0;
GLint textureLevelHeight = 0;
GLint textureLevelDepth = 0;
switch (target)
{
case GL_TEXTURE_2D:
{
if (static_cast<GLuint>(width) > (caps.max2DTextureSize >> level) ||
static_cast<GLuint>(height) > (caps.max2DTextureSize >> level))
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
gl::Texture2D *texture2d = context->getTexture2D();
if (texture2d)
{
textureCompressed = texture2d->isCompressed(level);
textureInternalFormat = texture2d->getInternalFormat(level);
textureLevelWidth = texture2d->getWidth(level);
textureLevelHeight = texture2d->getHeight(level);
textureLevelDepth = 1;
texture = texture2d;
}
}
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
{
if (!isSubImage && width != height)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
if (static_cast<GLuint>(width) > (caps.maxCubeMapTextureSize >> level))
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
gl::TextureCubeMap *textureCube = context->getTextureCubeMap();
if (textureCube)
{
textureCompressed = textureCube->isCompressed(target, level);
textureInternalFormat = textureCube->getInternalFormat(target, level);
textureLevelWidth = textureCube->getWidth(target, level);
textureLevelHeight = textureCube->getHeight(target, level);
textureLevelDepth = 1;
texture = textureCube;
}
}
break;
case GL_TEXTURE_3D:
{
if (static_cast<GLuint>(width) > (caps.max3DTextureSize >> level) ||
static_cast<GLuint>(height) > (caps.max3DTextureSize >> level) ||
static_cast<GLuint>(depth) > (caps.max3DTextureSize >> level))
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
gl::Texture3D *texture3d = context->getTexture3D();
if (texture3d)
{
textureCompressed = texture3d->isCompressed(level);
textureInternalFormat = texture3d->getInternalFormat(level);
textureLevelWidth = texture3d->getWidth(level);
textureLevelHeight = texture3d->getHeight(level);
textureLevelDepth = texture3d->getDepth(level);
texture = texture3d;
}
}
break;
case GL_TEXTURE_2D_ARRAY:
{
if (static_cast<GLuint>(width) > (caps.max2DTextureSize >> level) ||
static_cast<GLuint>(height) > (caps.max2DTextureSize >> level) ||
static_cast<GLuint>(depth) > (caps.maxArrayTextureLayers >> level))
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
gl::Texture2DArray *texture2darray = context->getTexture2DArray();
if (texture2darray)
{
textureCompressed = texture2darray->isCompressed(level);
textureInternalFormat = texture2darray->getInternalFormat(level);
textureLevelWidth = texture2darray->getWidth(level);
textureLevelHeight = texture2darray->getHeight(level);
textureLevelDepth = texture2darray->getLayers(level);
texture = texture2darray;
}
}
break;
default:
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
if (!texture)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
if (texture->isImmutable() && !isSubImage)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
// Validate texture formats
GLenum actualInternalFormat = isSubImage ? textureInternalFormat : internalformat;
const gl::InternalFormat &actualFormatInfo = gl::GetInternalFormatInfo(actualInternalFormat);
if (isCompressed)
{
if (!ValidCompressedImageSize(context, actualInternalFormat, width, height))
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
if (!actualFormatInfo.compressed)
{
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
if (target == GL_TEXTURE_3D)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
}
else
{
if (!ValidateTexImageFormatCombination(context, actualInternalFormat, format, type))
{
return false;
}
if (target == GL_TEXTURE_3D && (format == GL_DEPTH_COMPONENT || format == GL_DEPTH_STENCIL))
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
}
// Validate sub image parameters
if (isSubImage)
{
if (isCompressed != textureCompressed)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
if (isCompressed)
{
if ((width % 4 != 0 && width != textureLevelWidth) ||
(height % 4 != 0 && height != textureLevelHeight))
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
}
if (width == 0 || height == 0 || depth == 0)
{
return false;
}
if (xoffset < 0 || yoffset < 0 || zoffset < 0)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
if (std::numeric_limits<GLsizei>::max() - xoffset < width ||
std::numeric_limits<GLsizei>::max() - yoffset < height ||
std::numeric_limits<GLsizei>::max() - zoffset < depth)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
if (xoffset + width > textureLevelWidth ||
yoffset + height > textureLevelHeight ||
zoffset + depth > textureLevelDepth)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
}
// Check for pixel unpack buffer related API errors
gl::Buffer *pixelUnpackBuffer = context->getState().getTargetBuffer(GL_PIXEL_UNPACK_BUFFER);
if (pixelUnpackBuffer != NULL)
{
// ...the data would be unpacked from the buffer object such that the memory reads required
// would exceed the data store size.
size_t widthSize = static_cast<size_t>(width);
size_t heightSize = static_cast<size_t>(height);
size_t depthSize = static_cast<size_t>(depth);
GLenum sizedFormat = GetSizedInternalFormat(actualInternalFormat, type);
size_t pixelBytes = static_cast<size_t>(gl::GetInternalFormatInfo(sizedFormat).pixelBytes);
if (!rx::IsUnsignedMultiplicationSafe(widthSize, heightSize) ||
!rx::IsUnsignedMultiplicationSafe(widthSize * heightSize, depthSize) ||
!rx::IsUnsignedMultiplicationSafe(widthSize * heightSize * depthSize, pixelBytes))
{
// Overflow past the end of the buffer
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
size_t copyBytes = widthSize * heightSize * depthSize * pixelBytes;
size_t offset = reinterpret_cast<size_t>(pixels);
if (!rx::IsUnsignedAdditionSafe(offset, copyBytes) ||
((offset + copyBytes) > static_cast<size_t>(pixelUnpackBuffer->getSize())))
{
// Overflow past the end of the buffer
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
// ...data is not evenly divisible into the number of bytes needed to store in memory a datum
// indicated by type.
size_t dataBytesPerPixel = static_cast<size_t>(gl::GetTypeInfo(type).bytes);
if ((offset % dataBytesPerPixel) != 0)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
// ...the buffer object's data store is currently mapped.
if (pixelUnpackBuffer->isMapped())
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
}
return true;
}
struct EffectiveInternalFormatInfo
{
GLenum mEffectiveFormat;
GLenum mDestFormat;
GLuint mMinRedBits;
GLuint mMaxRedBits;
GLuint mMinGreenBits;
GLuint mMaxGreenBits;
GLuint mMinBlueBits;
GLuint mMaxBlueBits;
GLuint mMinAlphaBits;
GLuint mMaxAlphaBits;
EffectiveInternalFormatInfo(GLenum effectiveFormat, GLenum destFormat, GLuint minRedBits, GLuint maxRedBits,
GLuint minGreenBits, GLuint maxGreenBits, GLuint minBlueBits, GLuint maxBlueBits,
GLuint minAlphaBits, GLuint maxAlphaBits)
: mEffectiveFormat(effectiveFormat), mDestFormat(destFormat), mMinRedBits(minRedBits),
mMaxRedBits(maxRedBits), mMinGreenBits(minGreenBits), mMaxGreenBits(maxGreenBits),
mMinBlueBits(minBlueBits), mMaxBlueBits(maxBlueBits), mMinAlphaBits(minAlphaBits),
mMaxAlphaBits(maxAlphaBits) {};
};
typedef std::vector<EffectiveInternalFormatInfo> EffectiveInternalFormatList;
static EffectiveInternalFormatList BuildSizedEffectiveInternalFormatList()
{
EffectiveInternalFormatList list;
// OpenGL ES 3.0.3 Specification, Table 3.17, pg 141: Effective internal format coresponding to destination internal format and
// linear source buffer component sizes.
// | Source channel min/max sizes |
// Effective Internal Format | N/A | R | G | B | A |
list.push_back(EffectiveInternalFormatInfo(GL_ALPHA8_EXT, GL_NONE, 0, 0, 0, 0, 0, 0, 1, 8));
list.push_back(EffectiveInternalFormatInfo(GL_R8, GL_NONE, 1, 8, 0, 0, 0, 0, 0, 0));
list.push_back(EffectiveInternalFormatInfo(GL_RG8, GL_NONE, 1, 8, 1, 8, 0, 0, 0, 0));
list.push_back(EffectiveInternalFormatInfo(GL_RGB565, GL_NONE, 1, 5, 1, 6, 1, 5, 0, 0));
list.push_back(EffectiveInternalFormatInfo(GL_RGB8, GL_NONE, 6, 8, 7, 8, 6, 8, 0, 0));
list.push_back(EffectiveInternalFormatInfo(GL_RGBA4, GL_NONE, 1, 4, 1, 4, 1, 4, 1, 4));
list.push_back(EffectiveInternalFormatInfo(GL_RGB5_A1, GL_NONE, 5, 5, 5, 5, 5, 5, 1, 1));
list.push_back(EffectiveInternalFormatInfo(GL_RGBA8, GL_NONE, 5, 8, 5, 8, 5, 8, 2, 8));
list.push_back(EffectiveInternalFormatInfo(GL_RGB10_A2, GL_NONE, 9, 10, 9, 10, 9, 10, 2, 2));
return list;
}
static EffectiveInternalFormatList BuildUnsizedEffectiveInternalFormatList()
{
EffectiveInternalFormatList list;
// OpenGL ES 3.0.3 Specification, Table 3.17, pg 141: Effective internal format coresponding to destination internal format and
// linear source buffer component sizes.
// | Source channel min/max sizes |
// Effective Internal Format | Dest Format | R | G | B | A |
list.push_back(EffectiveInternalFormatInfo(GL_ALPHA8_EXT, GL_ALPHA, 0, UINT_MAX, 0, UINT_MAX, 0, UINT_MAX, 1, 8));
list.push_back(EffectiveInternalFormatInfo(GL_LUMINANCE8_EXT, GL_LUMINANCE, 1, 8, 0, UINT_MAX, 0, UINT_MAX, 0, UINT_MAX));
list.push_back(EffectiveInternalFormatInfo(GL_LUMINANCE8_ALPHA8_EXT, GL_LUMINANCE_ALPHA, 1, 8, 0, UINT_MAX, 0, UINT_MAX, 1, 8));
list.push_back(EffectiveInternalFormatInfo(GL_RGB565, GL_RGB, 1, 5, 1, 6, 1, 5, 0, UINT_MAX));
list.push_back(EffectiveInternalFormatInfo(GL_RGB8, GL_RGB, 6, 8, 7, 8, 6, 8, 0, UINT_MAX));
list.push_back(EffectiveInternalFormatInfo(GL_RGBA4, GL_RGBA, 1, 4, 1, 4, 1, 4, 1, 4));
list.push_back(EffectiveInternalFormatInfo(GL_RGB5_A1, GL_RGBA, 5, 5, 5, 5, 5, 5, 1, 1));
list.push_back(EffectiveInternalFormatInfo(GL_RGBA8, GL_RGBA, 5, 8, 5, 8, 5, 8, 5, 8));
return list;
}
static bool GetEffectiveInternalFormat(const InternalFormat &srcFormat, const InternalFormat &destFormat,
GLenum *outEffectiveFormat)
{
const EffectiveInternalFormatList *list = NULL;
GLenum targetFormat = GL_NONE;
if (destFormat.pixelBytes > 0)
{
static const EffectiveInternalFormatList sizedList = BuildSizedEffectiveInternalFormatList();
list = &sizedList;
}
else
{
static const EffectiveInternalFormatList unsizedList = BuildUnsizedEffectiveInternalFormatList();
list = &unsizedList;
targetFormat = destFormat.format;
}
for (size_t curFormat = 0; curFormat < list->size(); ++curFormat)
{
const EffectiveInternalFormatInfo& formatInfo = list->at(curFormat);
if ((formatInfo.mDestFormat == targetFormat) &&
(formatInfo.mMinRedBits <= srcFormat.redBits && formatInfo.mMaxRedBits >= srcFormat.redBits) &&
(formatInfo.mMinGreenBits <= srcFormat.greenBits && formatInfo.mMaxGreenBits >= srcFormat.greenBits) &&
(formatInfo.mMinBlueBits <= srcFormat.blueBits && formatInfo.mMaxBlueBits >= srcFormat.blueBits) &&
(formatInfo.mMinAlphaBits <= srcFormat.alphaBits && formatInfo.mMaxAlphaBits >= srcFormat.alphaBits))
{
*outEffectiveFormat = formatInfo.mEffectiveFormat;
return true;
}
}
return false;
}
struct CopyConversion
{
GLenum mTextureFormat;
GLenum mFramebufferFormat;
CopyConversion(GLenum textureFormat, GLenum framebufferFormat)
: mTextureFormat(textureFormat), mFramebufferFormat(framebufferFormat) { }
bool operator<(const CopyConversion& other) const
{
return memcmp(this, &other, sizeof(CopyConversion)) < 0;
}
};
typedef std::set<CopyConversion> CopyConversionSet;
static CopyConversionSet BuildValidES3CopyTexImageCombinations()
{
CopyConversionSet set;
// From ES 3.0.1 spec, table 3.15
set.insert(CopyConversion(GL_ALPHA, GL_RGBA));
set.insert(CopyConversion(GL_LUMINANCE, GL_RED));
set.insert(CopyConversion(GL_LUMINANCE, GL_RG));
set.insert(CopyConversion(GL_LUMINANCE, GL_RGB));
set.insert(CopyConversion(GL_LUMINANCE, GL_RGBA));
set.insert(CopyConversion(GL_LUMINANCE_ALPHA, GL_RGBA));
set.insert(CopyConversion(GL_RED, GL_RED));
set.insert(CopyConversion(GL_RED, GL_RG));
set.insert(CopyConversion(GL_RED, GL_RGB));
set.insert(CopyConversion(GL_RED, GL_RGBA));
set.insert(CopyConversion(GL_RG, GL_RG));
set.insert(CopyConversion(GL_RG, GL_RGB));
set.insert(CopyConversion(GL_RG, GL_RGBA));
set.insert(CopyConversion(GL_RGB, GL_RGB));
set.insert(CopyConversion(GL_RGB, GL_RGBA));
set.insert(CopyConversion(GL_RGBA, GL_RGBA));
// Necessary for ANGLE back-buffers
set.insert(CopyConversion(GL_ALPHA, GL_BGRA_EXT));
set.insert(CopyConversion(GL_LUMINANCE, GL_BGRA_EXT));
set.insert(CopyConversion(GL_LUMINANCE_ALPHA, GL_BGRA_EXT));
set.insert(CopyConversion(GL_RED, GL_BGRA_EXT));
set.insert(CopyConversion(GL_RG, GL_BGRA_EXT));
set.insert(CopyConversion(GL_RGB, GL_BGRA_EXT));
set.insert(CopyConversion(GL_RGBA, GL_BGRA_EXT));
set.insert(CopyConversion(GL_RED_INTEGER, GL_RED_INTEGER));
set.insert(CopyConversion(GL_RED_INTEGER, GL_RG_INTEGER));
set.insert(CopyConversion(GL_RED_INTEGER, GL_RGB_INTEGER));
set.insert(CopyConversion(GL_RED_INTEGER, GL_RGBA_INTEGER));
set.insert(CopyConversion(GL_RG_INTEGER, GL_RG_INTEGER));
set.insert(CopyConversion(GL_RG_INTEGER, GL_RGB_INTEGER));
set.insert(CopyConversion(GL_RG_INTEGER, GL_RGBA_INTEGER));
set.insert(CopyConversion(GL_RGB_INTEGER, GL_RGB_INTEGER));
set.insert(CopyConversion(GL_RGB_INTEGER, GL_RGBA_INTEGER));
set.insert(CopyConversion(GL_RGBA_INTEGER, GL_RGBA_INTEGER));
return set;
}
static bool IsValidES3CopyTexImageCombination(GLenum textureInternalFormat, GLenum frameBufferInternalFormat, GLuint readBufferHandle)
{
const InternalFormat &textureInternalFormatInfo = GetInternalFormatInfo(textureInternalFormat);
const InternalFormat &framebufferInternalFormatInfo = GetInternalFormatInfo(frameBufferInternalFormat);
static const CopyConversionSet conversionSet = BuildValidES3CopyTexImageCombinations();
if (conversionSet.find(CopyConversion(textureInternalFormatInfo.format, framebufferInternalFormatInfo.format)) != conversionSet.end())
{
// Section 3.8.5 of the GLES 3.0.3 spec states that source and destination formats
// must both be signed, unsigned, or fixed point and both source and destinations
// must be either both SRGB or both not SRGB. EXT_color_buffer_float adds allowed
// conversion between fixed and floating point.
if ((textureInternalFormatInfo.colorEncoding == GL_SRGB) != (framebufferInternalFormatInfo.colorEncoding == GL_SRGB))
{
return false;
}
if (((textureInternalFormatInfo.componentType == GL_INT) != (framebufferInternalFormatInfo.componentType == GL_INT )) ||
((textureInternalFormatInfo.componentType == GL_UNSIGNED_INT) != (framebufferInternalFormatInfo.componentType == GL_UNSIGNED_INT)))
{
return false;
}
if ((textureInternalFormatInfo.componentType == GL_UNSIGNED_NORMALIZED ||
textureInternalFormatInfo.componentType == GL_SIGNED_NORMALIZED ||
textureInternalFormatInfo.componentType == GL_FLOAT) &&
!(framebufferInternalFormatInfo.componentType == GL_UNSIGNED_NORMALIZED ||
framebufferInternalFormatInfo.componentType == GL_SIGNED_NORMALIZED ||
framebufferInternalFormatInfo.componentType == GL_FLOAT))
{
return false;
}
// GLES specification 3.0.3, sec 3.8.5, pg 139-140:
// The effective internal format of the source buffer is determined with the following rules applied in order:
// * If the source buffer is a texture or renderbuffer that was created with a sized internal format then the
// effective internal format is the source buffer's sized internal format.
// * If the source buffer is a texture that was created with an unsized base internal format, then the
// effective internal format is the source image array's effective internal format, as specified by table
// 3.12, which is determined from the <format> and <type> that were used when the source image array was
// specified by TexImage*.
// * Otherwise the effective internal format is determined by the row in table 3.17 or 3.18 where
// Destination Internal Format matches internalformat and where the [source channel sizes] are consistent
// with the values of the source buffer's [channel sizes]. Table 3.17 is used if the
// FRAMEBUFFER_ATTACHMENT_ENCODING is LINEAR and table 3.18 is used if the FRAMEBUFFER_ATTACHMENT_ENCODING
// is SRGB.
const InternalFormat *sourceEffectiveFormat = NULL;
if (readBufferHandle != 0)
{
// Not the default framebuffer, therefore the read buffer must be a user-created texture or renderbuffer
if (framebufferInternalFormatInfo.pixelBytes > 0)
{
sourceEffectiveFormat = &framebufferInternalFormatInfo;
}
else
{
// Renderbuffers cannot be created with an unsized internal format, so this must be an unsized-format
// texture. We can use the same table we use when creating textures to get its effective sized format.
const FormatType &typeInfo = GetFormatTypeInfo(framebufferInternalFormatInfo.format, framebufferInternalFormatInfo.type);
sourceEffectiveFormat = &GetInternalFormatInfo(typeInfo.internalFormat);
}
}
else
{
// The effective internal format must be derived from the source framebuffer's channel sizes.
// This is done in GetEffectiveInternalFormat for linear buffers (table 3.17)
if (framebufferInternalFormatInfo.colorEncoding == GL_LINEAR)
{
GLenum effectiveFormat;
if (GetEffectiveInternalFormat(framebufferInternalFormatInfo, textureInternalFormatInfo, &effectiveFormat))
{
sourceEffectiveFormat = &GetInternalFormatInfo(effectiveFormat);
}
else
{
return false;
}
}
else if (framebufferInternalFormatInfo.colorEncoding == GL_SRGB)
{
// SRGB buffers can only be copied to sized format destinations according to table 3.18
if ((textureInternalFormatInfo.pixelBytes > 0) &&
(framebufferInternalFormatInfo.redBits >= 1 && framebufferInternalFormatInfo.redBits <= 8) &&
(framebufferInternalFormatInfo.greenBits >= 1 && framebufferInternalFormatInfo.greenBits <= 8) &&
(framebufferInternalFormatInfo.blueBits >= 1 && framebufferInternalFormatInfo.blueBits <= 8) &&
(framebufferInternalFormatInfo.alphaBits >= 1 && framebufferInternalFormatInfo.alphaBits <= 8))
{
sourceEffectiveFormat = &GetInternalFormatInfo(GL_SRGB8_ALPHA8);
}
else
{
return false;
}
}
else
{
UNREACHABLE();
return false;
}
}
if (textureInternalFormatInfo.pixelBytes > 0)
{
// Section 3.8.5 of the GLES 3.0.3 spec, pg 139, requires that, if the destination format is sized,
// component sizes of the source and destination formats must exactly match
if (textureInternalFormatInfo.redBits != sourceEffectiveFormat->redBits ||
textureInternalFormatInfo.greenBits != sourceEffectiveFormat->greenBits ||
textureInternalFormatInfo.blueBits != sourceEffectiveFormat->blueBits ||
textureInternalFormatInfo.alphaBits != sourceEffectiveFormat->alphaBits)
{
return false;
}
}
return true; // A conversion function exists, and no rule in the specification has precluded conversion
// between these formats.
}
return false;
}
bool ValidateES3CopyTexImageParameters(Context *context, GLenum target, GLint level, GLenum internalformat,
bool isSubImage, GLint xoffset, GLint yoffset, GLint zoffset,
GLint x, GLint y, GLsizei width, GLsizei height, GLint border)
{
GLenum textureInternalFormat;
if (!ValidateCopyTexImageParametersBase(context, target, level, internalformat, isSubImage,
xoffset, yoffset, zoffset, x, y, width, height,
border, &textureInternalFormat))
{
return false;
}
gl::Framebuffer *framebuffer = context->getState().getReadFramebuffer();
if (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE)
{
context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION));
return false;
}
if (context->getState().getReadFramebuffer()->id() != 0 && framebuffer->getSamples() != 0)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
gl::FramebufferAttachment *source = framebuffer->getReadColorbuffer();
GLenum colorbufferInternalFormat = source->getInternalFormat();
if (isSubImage)
{
if (!IsValidES3CopyTexImageCombination(textureInternalFormat, colorbufferInternalFormat,
context->getState().getReadFramebuffer()->id()))
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
}
else
{
if (!gl::IsValidES3CopyTexImageCombination(internalformat, colorbufferInternalFormat,
context->getState().getReadFramebuffer()->id()))
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
}
// If width or height is zero, it is a no-op. Return false without setting an error.
return (width > 0 && height > 0);
}
bool ValidateES3TexStorageParameters(Context *context, GLenum target, GLsizei levels, GLenum internalformat,
GLsizei width, GLsizei height, GLsizei depth)
{
if (width < 1 || height < 1 || depth < 1 || levels < 1)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
if (levels > gl::log2(std::max(std::max(width, height), depth)) + 1)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
const gl::Caps &caps = context->getCaps();
gl::Texture *texture = NULL;
switch (target)
{
case GL_TEXTURE_2D:
{
texture = context->getTexture2D();
if (static_cast<GLuint>(width) > caps.max2DTextureSize ||
static_cast<GLuint>(height) > caps.max2DTextureSize)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
}
break;
case GL_TEXTURE_CUBE_MAP:
{
texture = context->getTextureCubeMap();
if (width != height)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
if (static_cast<GLuint>(width) > caps.maxCubeMapTextureSize)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
}
break;
case GL_TEXTURE_3D:
{
texture = context->getTexture3D();
if (static_cast<GLuint>(width) > caps.max3DTextureSize ||
static_cast<GLuint>(height) > caps.max3DTextureSize ||
static_cast<GLuint>(depth) > caps.max3DTextureSize)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
}
break;
case GL_TEXTURE_2D_ARRAY:
{
texture = context->getTexture2DArray();
if (static_cast<GLuint>(width) > caps.max2DTextureSize ||
static_cast<GLuint>(height) > caps.max2DTextureSize ||
static_cast<GLuint>(depth) > caps.maxArrayTextureLayers)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
}
break;
default:
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
if (!texture || texture->id() == 0)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
if (texture->isImmutable())
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
const gl::InternalFormat &formatInfo = gl::GetInternalFormatInfo(internalformat);
if (!formatInfo.textureSupport(context->getClientVersion(), context->getExtensions()))
{
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
if (formatInfo.pixelBytes == 0)
{
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
return true;
}
bool ValidateFramebufferTextureLayer(Context *context, GLenum target, GLenum attachment,
GLuint texture, GLint level, GLint layer)
{
if (context->getClientVersion() < 3)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
if (layer < 0)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
if (!ValidateFramebufferTextureBase(context, target, attachment, texture, level))
{
return false;
}
const gl::Caps &caps = context->getCaps();
if (texture != 0)
{
gl::Texture *tex = context->getTexture(texture);
ASSERT(tex);
switch (tex->getTarget())
{
case GL_TEXTURE_2D_ARRAY:
{
if (level > gl::log2(caps.max2DTextureSize))
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
if (static_cast<GLuint>(layer) >= caps.maxArrayTextureLayers)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
gl::Texture2DArray *texArray = static_cast<gl::Texture2DArray *>(tex);
if (texArray->isCompressed(level))
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
}
break;
case GL_TEXTURE_3D:
{
if (level > gl::log2(caps.max3DTextureSize))
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
if (static_cast<GLuint>(layer) >= caps.max3DTextureSize)
{
context->recordError(Error(GL_INVALID_VALUE));
return false;
}
gl::Texture3D *tex3d = static_cast<gl::Texture3D *>(tex);
if (tex3d->isCompressed(level))
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
}
break;
default:
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
}
return true;
}
bool ValidES3ReadFormatType(Context *context, GLenum internalFormat, GLenum format, GLenum type)
{
const gl::InternalFormat &internalFormatInfo = gl::GetInternalFormatInfo(internalFormat);
switch (format)
{
case GL_RGBA:
switch (type)
{
case GL_UNSIGNED_BYTE:
break;
case GL_UNSIGNED_INT_2_10_10_10_REV:
if (internalFormat != GL_RGB10_A2)
{
return false;
}
break;
case GL_FLOAT:
if (internalFormatInfo.componentType != GL_FLOAT)
{
return false;
}
break;
default:
return false;
}
break;
case GL_RGBA_INTEGER:
switch (type)
{
case GL_INT:
if (internalFormatInfo.componentType != GL_INT)
{
return false;
}
break;
case GL_UNSIGNED_INT:
if (internalFormatInfo.componentType != GL_UNSIGNED_INT)
{
return false;
}
break;
default:
return false;
}
break;
case GL_BGRA_EXT:
switch (type)
{
case GL_UNSIGNED_BYTE:
case GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT:
case GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT:
break;
default:
return false;
}
break;
case GL_RG_EXT:
case GL_RED_EXT:
if (!context->getExtensions().textureRG)
{
return false;
}
switch (type)
{
case GL_UNSIGNED_BYTE:
break;
default:
return false;
}
break;
default:
return false;
}
return true;
}
bool ValidateInvalidateFramebufferParameters(Context *context, GLenum target, GLsizei numAttachments,
const GLenum* attachments)
{
bool defaultFramebuffer = false;
switch (target)
{
case GL_DRAW_FRAMEBUFFER:
case GL_FRAMEBUFFER:
defaultFramebuffer = context->getState().getDrawFramebuffer()->id() == 0;
break;
case GL_READ_FRAMEBUFFER:
defaultFramebuffer = context->getState().getReadFramebuffer()->id() == 0;
break;
default:
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
for (int i = 0; i < numAttachments; ++i)
{
if (attachments[i] >= GL_COLOR_ATTACHMENT0 && attachments[i] <= GL_COLOR_ATTACHMENT15)
{
if (defaultFramebuffer)
{
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
if (attachments[i] >= GL_COLOR_ATTACHMENT0 + context->getCaps().maxColorAttachments)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
}
else
{
switch (attachments[i])
{
case GL_DEPTH_ATTACHMENT:
case GL_STENCIL_ATTACHMENT:
case GL_DEPTH_STENCIL_ATTACHMENT:
if (defaultFramebuffer)
{
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
break;
case GL_COLOR:
case GL_DEPTH:
case GL_STENCIL:
if (!defaultFramebuffer)
{
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
break;
default:
context->recordError(Error(GL_INVALID_ENUM));
return false;
}
}
}
return true;
}
bool ValidateClearBuffer(Context *context)
{
if (context->getClientVersion() < 3)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
const gl::Framebuffer *fbo = context->getState().getDrawFramebuffer();
if (!fbo || fbo->completeness() != GL_FRAMEBUFFER_COMPLETE)
{
context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION));
return false;
}
return true;
}
bool ValidateGetUniformuiv(Context *context, GLuint program, GLint location, GLuint* params)
{
if (context->getClientVersion() < 3)
{
context->recordError(Error(GL_INVALID_OPERATION));
return false;
}
return ValidateGetUniformBase(context, program, location);
}
}