blob: 284f61d775af9d98d59c7623950719426dc6dcb0 [file] [log] [blame]
//
// Copyright (c) 2002-2010 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.
//
// Config.cpp: Implements the egl::Config class, describing the format, type
// and size for an egl::Surface. Implements EGLConfig and related functionality.
// [EGL 1.4] section 3.4 page 15.
#include "libEGL/Config.h"
#include <algorithm>
#include <vector>
#include "common/debug.h"
using namespace std;
namespace egl
{
Config::Config(D3DDISPLAYMODE displayMode, EGLint minInterval, EGLint maxInterval, D3DFORMAT renderTargetFormat, D3DFORMAT depthStencilFormat, EGLint multiSample)
: mDisplayMode(displayMode), mRenderTargetFormat(renderTargetFormat), mDepthStencilFormat(depthStencilFormat), mMultiSample(multiSample)
{
set(displayMode, minInterval, maxInterval, renderTargetFormat, depthStencilFormat, multiSample);
}
void Config::setDefaults()
{
mBufferSize = 0;
mRedSize = 0;
mGreenSize = 0;
mBlueSize = 0;
mLuminanceSize = 0;
mAlphaSize = 0;
mAlphaMaskSize = 0;
mBindToTextureRGB = EGL_DONT_CARE;
mBindToTextureRGBA = EGL_DONT_CARE;
mColorBufferType = EGL_RGB_BUFFER;
mConfigCaveat = EGL_DONT_CARE;
mConfigID = EGL_DONT_CARE;
mConformant = 0;
mDepthSize = 0;
mLevel = 0;
mMatchNativePixmap = EGL_NONE;
mMaxPBufferWidth = 0;
mMaxPBufferHeight = 0;
mMaxPBufferPixels = 0;
mMaxSwapInterval = EGL_DONT_CARE;
mMinSwapInterval = EGL_DONT_CARE;
mNativeRenderable = EGL_DONT_CARE;
mNativeVisualID = 0;
mNativeVisualType = EGL_DONT_CARE;
mRenderableType = EGL_OPENGL_ES_BIT;
mSampleBuffers = 0;
mSamples = 0;
mStencilSize = 0;
mSurfaceType = EGL_WINDOW_BIT;
mTransparentType = EGL_NONE;
mTransparentRedValue = EGL_DONT_CARE;
mTransparentGreenValue = EGL_DONT_CARE;
mTransparentBlueValue = EGL_DONT_CARE;
}
void Config::set(D3DDISPLAYMODE displayMode, EGLint minInterval, EGLint maxInterval, D3DFORMAT renderTargetFormat, D3DFORMAT depthStencilFormat, EGLint multiSample)
{
switch (renderTargetFormat)
{
case D3DFMT_A1R5G5B5:
mBufferSize = 16;
mRedSize = 5;
mGreenSize = 5;
mBlueSize = 5;
mAlphaSize = 1;
break;
case D3DFMT_A2R10G10B10:
mBufferSize = 32;
mRedSize = 10;
mGreenSize = 10;
mBlueSize = 10;
mAlphaSize = 2;
break;
case D3DFMT_A8R8G8B8:
mBufferSize = 32;
mRedSize = 8;
mGreenSize = 8;
mBlueSize = 8;
mAlphaSize = 8;
break;
case D3DFMT_R5G6B5:
mBufferSize = 16;
mRedSize = 5;
mGreenSize = 6;
mBlueSize = 5;
mAlphaSize = 0;
break;
case D3DFMT_X8R8G8B8:
mBufferSize = 32;
mRedSize = 8;
mGreenSize = 8;
mBlueSize = 8;
mAlphaSize = 0;
break;
default:
UNREACHABLE(); // Other formats should not be valid
}
mLuminanceSize = 0;
mAlphaMaskSize = 0;
mBindToTextureRGB = EGL_FALSE;
mBindToTextureRGBA = EGL_FALSE;
mColorBufferType = EGL_RGB_BUFFER;
mConfigCaveat = (displayMode.Format == renderTargetFormat) ? EGL_NONE : EGL_SLOW_CONFIG;
mConfigID = 0;
mConformant = EGL_OPENGL_ES2_BIT;
switch (depthStencilFormat)
{
// case D3DFMT_D16_LOCKABLE:
// mDepthSize = 16;
// mStencilSize = 0;
// break;
case D3DFMT_D32:
mDepthSize = 32;
mStencilSize = 0;
break;
case D3DFMT_D15S1:
mDepthSize = 15;
mStencilSize = 1;
break;
case D3DFMT_D24S8:
mDepthSize = 24;
mStencilSize = 8;
break;
case D3DFMT_D24X8:
mDepthSize = 24;
mStencilSize = 0;
break;
case D3DFMT_D24X4S4:
mDepthSize = 24;
mStencilSize = 4;
break;
case D3DFMT_D16:
mDepthSize = 16;
mStencilSize = 0;
break;
// case D3DFMT_D32F_LOCKABLE:
// mDepthSize = 32;
// mStencilSize = 0;
// break;
// case D3DFMT_D24FS8:
// mDepthSize = 24;
// mStencilSize = 8;
// break;
default:
UNREACHABLE();
}
mLevel = 0;
mMatchNativePixmap = EGL_NONE;
mMaxPBufferWidth = 0;
mMaxPBufferHeight = 0;
mMaxPBufferPixels = 0;
mMaxSwapInterval = maxInterval;
mMinSwapInterval = minInterval;
mNativeRenderable = EGL_FALSE;
mNativeVisualID = 0;
mNativeVisualType = 0;
mRenderableType = EGL_OPENGL_ES2_BIT;
mSampleBuffers = multiSample ? 1 : 0;
mSamples = multiSample;
mSurfaceType = EGL_PBUFFER_BIT | EGL_WINDOW_BIT | EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
mTransparentType = EGL_NONE;
mTransparentRedValue = 0;
mTransparentGreenValue = 0;
mTransparentBlueValue = 0;
}
EGLConfig Config::getHandle() const
{
return (EGLConfig)(size_t)mConfigID;
}
SortConfig::SortConfig(const EGLint *attribList)
: mWantRed(false), mWantGreen(false), mWantBlue(false), mWantAlpha(false), mWantLuminance(false)
{
scanForWantedComponents(attribList);
}
void SortConfig::scanForWantedComponents(const EGLint *attribList)
{
// [EGL] section 3.4.1 page 24
// Sorting rule #3: by larger total number of color bits, not considering
// components that are 0 or don't-care.
for (const EGLint *attr = attribList; attr[0] != EGL_NONE; attr += 2)
{
if (attr[1] != 0 && attr[1] != EGL_DONT_CARE)
{
switch (attr[0])
{
case EGL_RED_SIZE: mWantRed = true; break;
case EGL_GREEN_SIZE: mWantGreen = true; break;
case EGL_BLUE_SIZE: mWantBlue = true; break;
case EGL_ALPHA_SIZE: mWantAlpha = true; break;
case EGL_LUMINANCE_SIZE: mWantLuminance = true; break;
}
}
}
}
EGLint SortConfig::wantedComponentsSize(const Config &config) const
{
EGLint total = 0;
if (mWantRed) total += config.mRedSize;
if (mWantGreen) total += config.mGreenSize;
if (mWantBlue) total += config.mBlueSize;
if (mWantAlpha) total += config.mAlphaSize;
if (mWantLuminance) total += config.mLuminanceSize;
return total;
}
bool SortConfig::operator()(const Config *x, const Config *y) const
{
return (*this)(*x, *y);
}
bool SortConfig::operator()(const Config &x, const Config &y) const
{
#define SORT(attribute) \
if (x.attribute != y.attribute) \
{ \
return x.attribute < y.attribute; \
}
META_ASSERT(EGL_NONE < EGL_SLOW_CONFIG && EGL_SLOW_CONFIG < EGL_NON_CONFORMANT_CONFIG);
SORT(mConfigCaveat);
META_ASSERT(EGL_RGB_BUFFER < EGL_LUMINANCE_BUFFER);
SORT(mColorBufferType);
// By larger total number of color bits, only considering those that are requested to be > 0.
EGLint xComponentsSize = wantedComponentsSize(x);
EGLint yComponentsSize = wantedComponentsSize(y);
if (xComponentsSize != yComponentsSize)
{
return xComponentsSize > yComponentsSize;
}
SORT(mBufferSize);
SORT(mSampleBuffers);
SORT(mSamples);
SORT(mDepthSize);
SORT(mStencilSize);
SORT(mAlphaMaskSize);
SORT(mNativeVisualType);
SORT(mConfigID);
#undef SORT
return false;
}
// We'd like to use SortConfig to also eliminate duplicate configs.
// This works as long as we never have two configs with different per-RGB-component layouts,
// but the same total.
// 5551 and 565 are different because R+G+B is different.
// 5551 and 555 are different because bufferSize is different.
const EGLint ConfigSet::mSortAttribs[] =
{
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_LUMINANCE_SIZE, 1,
// BUT NOT ALPHA
EGL_NONE
};
ConfigSet::ConfigSet()
: mSet(SortConfig(mSortAttribs))
{
}
void ConfigSet::add(D3DDISPLAYMODE displayMode, EGLint minSwapInterval, EGLint maxSwapInterval, D3DFORMAT renderTargetFormat, D3DFORMAT depthStencilFormat, EGLint multiSample)
{
Config config(displayMode, minSwapInterval, maxSwapInterval, renderTargetFormat, depthStencilFormat, multiSample);
mSet.insert(config);
}
size_t ConfigSet::size() const
{
return mSet.size();
}
bool ConfigSet::getConfigs(EGLConfig *configs, const EGLint *attribList, EGLint configSize, EGLint *numConfig)
{
vector<const Config*> passed;
passed.reserve(mSet.size());
for (Iterator config = mSet.begin(); config != mSet.end(); config++)
{
bool match = true;
const EGLint *attribute = attribList;
while (attribute[0] != EGL_NONE)
{
switch (attribute[0])
{
case EGL_BUFFER_SIZE: match = config->mBufferSize >= attribute[1]; break;
case EGL_ALPHA_SIZE: match = config->mAlphaSize >= attribute[1]; break;
case EGL_BLUE_SIZE: match = config->mBlueSize >= attribute[1]; break;
case EGL_GREEN_SIZE: match = config->mGreenSize >= attribute[1]; break;
case EGL_RED_SIZE: match = config->mRedSize >= attribute[1]; break;
case EGL_DEPTH_SIZE: match = config->mDepthSize >= attribute[1]; break;
case EGL_STENCIL_SIZE: match = config->mStencilSize >= attribute[1]; break;
case EGL_CONFIG_CAVEAT: match = config->mConfigCaveat == attribute[1]; break;
case EGL_CONFIG_ID: match = config->mConfigID == attribute[1]; break;
case EGL_LEVEL: match = config->mLevel >= attribute[1]; break;
case EGL_NATIVE_RENDERABLE: match = config->mNativeRenderable == attribute[1]; break;
case EGL_NATIVE_VISUAL_TYPE: match = config->mNativeVisualType == attribute[1]; break;
case EGL_SAMPLES: match = config->mSamples >= attribute[1]; break;
case EGL_SAMPLE_BUFFERS: match = config->mSampleBuffers >= attribute[1]; break;
case EGL_SURFACE_TYPE: match = (config->mSurfaceType & attribute[1]) == attribute[1]; break;
case EGL_TRANSPARENT_TYPE: match = config->mTransparentType == attribute[1]; break;
case EGL_TRANSPARENT_BLUE_VALUE: match = config->mTransparentBlueValue == attribute[1]; break;
case EGL_TRANSPARENT_GREEN_VALUE: match = config->mTransparentGreenValue == attribute[1]; break;
case EGL_TRANSPARENT_RED_VALUE: match = config->mTransparentRedValue == attribute[1]; break;
case EGL_BIND_TO_TEXTURE_RGB: match = config->mBindToTextureRGB == attribute[1]; break;
case EGL_BIND_TO_TEXTURE_RGBA: match = config->mBindToTextureRGBA == attribute[1]; break;
case EGL_MIN_SWAP_INTERVAL: match = config->mMinSwapInterval == attribute[1]; break;
case EGL_MAX_SWAP_INTERVAL: match = config->mMaxSwapInterval == attribute[1]; break;
case EGL_LUMINANCE_SIZE: match = config->mLuminanceSize >= attribute[1]; break;
case EGL_ALPHA_MASK_SIZE: match = config->mAlphaMaskSize >= attribute[1]; break;
case EGL_COLOR_BUFFER_TYPE: match = config->mColorBufferType == attribute[1]; break;
case EGL_RENDERABLE_TYPE: match = (config->mRenderableType & attribute[1]) == attribute[1]; break;
case EGL_MATCH_NATIVE_PIXMAP: match = false; UNIMPLEMENTED(); break;
case EGL_CONFORMANT: match = (config->mConformant & attribute[1]) == attribute[1]; break;
default:
return false;
}
if (!match)
{
break;
}
attribute += 2;
}
if (match)
{
passed.push_back(&*config);
}
}
if (configs)
{
sort(passed.begin(), passed.end(), SortConfig(attribList));
EGLint index;
for (index = 0; index < configSize && index < static_cast<EGLint>(passed.size()); index++)
{
configs[index] = passed[index]->getHandle();
}
*numConfig = index;
}
else
{
*numConfig = passed.size();
}
return true;
}
const egl::Config *ConfigSet::get(EGLConfig configHandle)
{
for (Iterator config = mSet.begin(); config != mSet.end(); config++)
{
if (config->getHandle() == configHandle)
{
return &(*config);
}
}
return NULL;
}
}