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230 lines
9.3 KiB
230 lines
9.3 KiB
/* |
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This file is part of Magnum. |
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Copyright © 2010, 2011, 2012, 2013, 2014, 2015 |
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Vladimír Vondruš <mosra@centrum.cz> |
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Permission is hereby granted, free of charge, to any person obtaining a |
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copy of this software and associated documentation files (the "Software"), |
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to deal in the Software without restriction, including without limitation |
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the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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and/or sell copies of the Software, and to permit persons to whom the |
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Software is furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included |
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in all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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DEALINGS IN THE SOFTWARE. |
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*/ |
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#include "Magnum/Context.h" |
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#include <algorithm> |
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#include "Magnum/Extensions.h" |
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#include "Magnum/Math/Range.h" |
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namespace Magnum { |
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namespace { |
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std::vector<std::string> KnownWorkarounds{ |
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#ifndef MAGNUM_TARGET_GLES |
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/* Creating core context with specific version on AMD and NV |
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proprietary drivers causes the context to be forced to given |
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version instead of selecting latest available version */ |
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"amd-nv-no-forward-compatible-core-context", |
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#ifdef CORRADE_TARGET_WINDOWS |
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/* On Windows Intel drivers ARB_shading_language_420pack is exposed in |
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GLSL even though the extension (e.g. binding keyword) is not |
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supported */ |
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"intel-windows-glsl-exposes-unsupported-shading-language-420pack", |
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#endif |
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/* Layout qualifier causes compiler error with GLSL 1.20 on Mesa, GLSL |
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1.30 on NVidia and 1.40 on Mac OS X. Everything is fine when using |
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newer GLSL version. */ |
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"no-layout-qualifiers-on-old-glsl", |
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/* NVidia drivers (358.16) report compressed block size from internal |
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format query in bits instead of bytes */ |
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"nv-compressed-block-size-in-bits", |
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/* NVidia drivers (358.16) report different compressed image size for |
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cubemaps based on whether the texture is immutable or not and not |
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based on whether I'm querying all faces (ARB_DSA) or a single face |
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(non-DSA, EXT_DSA) */ |
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"nv-cubemap-inconsistent-compressed-image-size", |
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/* NVidia drivers (358.16) return only the first slice of compressed |
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cube map image when querying all six slice using ARB_DSA API */ |
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"nv-cubemap-broken-full-compressed-image-query", |
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#endif |
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#ifdef CORRADE_TARGET_NACL |
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/* NaCl advertises some additional extensions but the GLESv2 library |
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does not have any entrypoints for them and there is no GetProcAddress |
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equivalent, thus marking them as unsupported. */ |
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"nacl-missing-extension-entrypoints" |
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#endif |
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}; |
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} |
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namespace Implementation { |
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/* Used in Shader.cpp (duh) */ |
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bool isShaderCompilationLogEmpty(const std::string&); |
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bool isShaderCompilationLogEmpty(const std::string& result) { |
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#if defined(CORRADE_TARGET_WINDOWS) && !defined(MAGNUM_TARGET_GLES) |
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/* Intel Windows drivers are too chatty */ |
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if((Context::current().detectedDriver() & Context::DetectedDriver::IntelWindows) && result == "No errors.\n") |
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return true; |
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#else |
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static_cast<void>(result); |
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#endif |
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return false; |
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} |
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/* Used in AbstractShaderProgram.cpp (duh) */ |
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bool isProgramLinkLogEmpty(const std::string&); |
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bool isProgramLinkLogEmpty(const std::string& result) { |
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#if defined(CORRADE_TARGET_WINDOWS) && !defined(MAGNUM_TARGET_GLES) |
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/* Intel Windows drivers are too chatty */ |
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if((Context::current().detectedDriver() & Context::DetectedDriver::IntelWindows) && result == "No errors.\n") |
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return true; |
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#else |
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static_cast<void>(result); |
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#endif |
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return false; |
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} |
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} |
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auto Context::detectedDriver() -> DetectedDrivers { |
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if(_detectedDrivers) return *_detectedDrivers; |
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_detectedDrivers = DetectedDrivers{}; |
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const std::string vendor = vendorString(); |
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/* Apple has its own drivers */ |
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#ifndef CORRADE_TARGET_APPLE |
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#ifndef MAGNUM_TARGET_GLES |
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/* AMD binary desktop drivers */ |
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if(vendor.find("ATI Technologies Inc.") != std::string::npos) |
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return *_detectedDrivers |= DetectedDriver::AMD; |
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#ifdef CORRADE_TARGET_WINDOWS |
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/* Intel Windows drivers */ |
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if(vendor.find("Intel") != std::string::npos) |
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return *_detectedDrivers |= DetectedDriver::IntelWindows; |
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#endif |
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#endif |
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#ifndef MAGNUM_TARGET_WEBGL |
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if(vendor.find("NVIDIA Corporation") != std::string::npos) |
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return *_detectedDrivers |= DetectedDriver::NVidia; |
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#endif |
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#endif |
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/** @todo there is also D3D9/D3D11 distinction on webglreport.com, is it useful? */ |
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#ifdef MAGNUM_TARGET_GLES |
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/* OpenGL ES implementation using ANGLE. Taken from these sources: |
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http://stackoverflow.com/a/20149090 |
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http://webglreport.com |
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*/ |
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{ |
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Range1Di range; |
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glGetIntegerv(GL_ALIASED_LINE_WIDTH_RANGE, range.data()); |
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if(range.min() == 1 && range.max() == 1 && vendor != "Internet Explorer") |
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return *_detectedDrivers |= DetectedDriver::ProbablyAngle; |
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} |
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#endif |
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return *_detectedDrivers; |
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} |
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void Context::disableDriverWorkaround(const std::string& workaround) { |
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/* Ignore unknown workarounds */ |
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if(std::find(KnownWorkarounds.begin(), KnownWorkarounds.end(), workaround) == KnownWorkarounds.end()) { |
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Warning() << "Unknown workaround" << workaround; |
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return; |
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} |
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_driverWorkarounds.emplace_back(workaround, true); |
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} |
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bool Context::isDriverWorkaroundDisabled(const std::string& workaround) { |
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CORRADE_INTERNAL_ASSERT(std::find(KnownWorkarounds.begin(), KnownWorkarounds.end(), workaround) != KnownWorkarounds.end()); |
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/* If the workaround was already asked for or disabled, return its state, |
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otherwise add it to the list as used one */ |
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for(const auto& i: _driverWorkarounds) |
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if(i.first == workaround) return i.second; |
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_driverWorkarounds.emplace_back(workaround, false); |
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return false; |
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} |
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void Context::setupDriverWorkarounds() { |
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#define _setRequiredVersion(extension, version) \ |
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if(_extensionRequiredVersion[Extensions::extension::Index] < Version::version) \ |
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_extensionRequiredVersion[Extensions::extension::Index] = Version::version |
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#ifndef MAGNUM_TARGET_GLES |
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#ifdef CORRADE_TARGET_WINDOWS |
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if((detectedDriver() & DetectedDriver::IntelWindows) && !isExtensionSupported<Extensions::GL::ARB::shading_language_420pack>() && !isDriverWorkaroundDisabled("intel-windows-glsl-exposes-unsupported-shading-language-420pack")) |
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_setRequiredVersion(GL::ARB::shading_language_420pack, None); |
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#endif |
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if(!isDriverWorkaroundDisabled("no-layout-qualifiers-on-old-glsl")) { |
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_setRequiredVersion(GL::ARB::explicit_attrib_location, GL320); |
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_setRequiredVersion(GL::ARB::explicit_uniform_location, GL320); |
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_setRequiredVersion(GL::ARB::shading_language_420pack, GL320); |
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} |
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#endif |
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#ifdef CORRADE_TARGET_NACL |
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if(!isDriverWorkaroundDisabled("nacl-missing-extension-entrypoints")) { |
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_setRequiredVersion(GL::EXT::multi_draw_arrays, None); |
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_setRequiredVersion(GL::EXT::debug_label, None); |
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_setRequiredVersion(GL::EXT::debug_marker, None); |
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_setRequiredVersion(GL::EXT::disjoint_timer_query, None); |
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_setRequiredVersion(GL::EXT::separate_shader_objects, None); |
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_setRequiredVersion(GL::EXT::multisampled_render_to_texture, None); |
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_setRequiredVersion(GL::EXT::robustness, None); |
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_setRequiredVersion(GL::KHR::debug, None); |
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_setRequiredVersion(GL::NV::read_buffer_front, None); |
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_setRequiredVersion(GL::OES::mapbuffer, None); |
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_setRequiredVersion(GL::ANGLE::framebuffer_blit, None); |
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_setRequiredVersion(GL::ANGLE::framebuffer_multisample, None); |
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_setRequiredVersion(GL::ANGLE::instanced_arrays, None); |
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_setRequiredVersion(GL::APPLE::framebuffer_multisample, None); |
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_setRequiredVersion(GL::EXT::discard_framebuffer, None); |
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_setRequiredVersion(GL::EXT::blend_minmax, None); |
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_setRequiredVersion(GL::EXT::texture_storage, None); |
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_setRequiredVersion(GL::EXT::map_buffer_range, None); |
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_setRequiredVersion(GL::EXT::instanced_arrays, None); |
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_setRequiredVersion(GL::EXT::draw_instanced, None); |
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_setRequiredVersion(GL::NV::draw_buffers, None); |
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_setRequiredVersion(GL::NV::fbo_color_attachments, None); // ?? |
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_setRequiredVersion(GL::NV::read_buffer, None); |
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_setRequiredVersion(GL::NV::draw_instanced, None); |
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_setRequiredVersion(GL::NV::framebuffer_blit, None); |
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_setRequiredVersion(GL::NV::framebuffer_multisample, None); |
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_setRequiredVersion(GL::NV::instanced_arrays, None); |
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_setRequiredVersion(GL::OES::texture_3D, None); |
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_setRequiredVersion(GL::OES::vertex_array_object, None); |
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} |
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#endif |
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#undef _setRequiredVersion |
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} |
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}
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