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180 lines
7.5 KiB
180 lines
7.5 KiB
/* |
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This file is part of Magnum. |
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Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 |
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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 "MeshVisualizer.h" |
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#include <Corrade/Containers/EnumSet.hpp> |
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#include <Corrade/Containers/Optional.h> |
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#include <Corrade/Containers/Reference.h> |
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#include <Corrade/Utility/Resource.h> |
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#include "Magnum/GL/Context.h" |
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#include "Magnum/GL/Extensions.h" |
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#include "Magnum/GL/Shader.h" |
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#include "Magnum/Shaders/Implementation/CreateCompatibilityShader.h" |
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namespace Magnum { namespace Shaders { |
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MeshVisualizer::MeshVisualizer(const Flags flags): _flags{flags} { |
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#ifndef MAGNUM_TARGET_GLES2 |
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if(flags & Flag::Wireframe && !(flags & Flag::NoGeometryShader)) { |
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#ifndef MAGNUM_TARGET_GLES |
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MAGNUM_ASSERT_GL_VERSION_SUPPORTED(GL::Version::GL320); |
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MAGNUM_ASSERT_GL_EXTENSION_SUPPORTED(GL::Extensions::ARB::geometry_shader4); |
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#elif !defined(MAGNUM_TARGET_WEBGL) |
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MAGNUM_ASSERT_GL_EXTENSION_SUPPORTED(GL::Extensions::EXT::geometry_shader); |
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#endif |
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} |
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#else |
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if(_flags & Flag::Wireframe) |
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MAGNUM_ASSERT_GL_EXTENSION_SUPPORTED(GL::Extensions::OES::standard_derivatives); |
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#endif |
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#ifdef MAGNUM_BUILD_STATIC |
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/* Import resources on static build, if not already */ |
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if(!Utility::Resource::hasGroup("MagnumShaders")) |
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importShaderResources(); |
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#endif |
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Utility::Resource rs("MagnumShaders"); |
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#ifndef MAGNUM_TARGET_GLES |
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const GL::Version version = GL::Context::current().supportedVersion({GL::Version::GL320, GL::Version::GL310, GL::Version::GL300, GL::Version::GL210}); |
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CORRADE_INTERNAL_ASSERT(!flags || flags & Flag::NoGeometryShader || version >= GL::Version::GL320); |
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#elif !defined(MAGNUM_TARGET_WEBGL) |
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const GL::Version version = GL::Context::current().supportedVersion({GL::Version::GLES310, GL::Version::GLES300, GL::Version::GLES200}); |
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CORRADE_INTERNAL_ASSERT(!flags || flags & Flag::NoGeometryShader || version >= GL::Version::GLES310); |
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#else |
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const GL::Version version = GL::Context::current().supportedVersion({GL::Version::GLES300, GL::Version::GLES200}); |
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#endif |
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GL::Shader vert = Implementation::createCompatibilityShader(rs, version, GL::Shader::Type::Vertex); |
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GL::Shader frag = Implementation::createCompatibilityShader(rs, version, GL::Shader::Type::Fragment); |
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vert.addSource(flags & Flag::Wireframe ? "#define WIREFRAME_RENDERING\n" : "") |
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.addSource(flags & Flag::NoGeometryShader ? "#define NO_GEOMETRY_SHADER\n" : "") |
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#ifdef MAGNUM_TARGET_WEBGL |
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.addSource("#define SUBSCRIPTING_WORKAROUND\n") |
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#elif defined(MAGNUM_TARGET_GLES2) |
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.addSource(GL::Context::current().detectedDriver() & GL::Context::DetectedDriver::Angle ? |
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"#define SUBSCRIPTING_WORKAROUND\n" : "") |
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#endif |
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.addSource(rs.get("generic.glsl")) |
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.addSource(rs.get("MeshVisualizer.vert")); |
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frag.addSource(flags & Flag::Wireframe ? "#define WIREFRAME_RENDERING\n" : "") |
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.addSource(flags & Flag::NoGeometryShader ? "#define NO_GEOMETRY_SHADER\n" : "") |
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.addSource(rs.get("generic.glsl")) |
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.addSource(rs.get("MeshVisualizer.frag")); |
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#if !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL) |
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Containers::Optional<GL::Shader> geom; |
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if(flags & Flag::Wireframe && !(flags & Flag::NoGeometryShader)) { |
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geom = Implementation::createCompatibilityShader(rs, version, GL::Shader::Type::Geometry); |
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geom->addSource(rs.get("MeshVisualizer.geom")); |
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} |
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#endif |
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#if !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL) |
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if(geom) CORRADE_INTERNAL_ASSERT_OUTPUT(GL::Shader::compile({vert, *geom, frag})); |
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else |
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#endif |
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CORRADE_INTERNAL_ASSERT_OUTPUT(GL::Shader::compile({vert, frag})); |
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attachShaders({vert, frag}); |
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#if !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL) |
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if(geom) attachShader(*geom); |
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#endif |
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/* ES3 has this done in the shader directly */ |
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#if !defined(MAGNUM_TARGET_GLES) || defined(MAGNUM_TARGET_GLES2) |
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#ifndef MAGNUM_TARGET_GLES |
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if(!GL::Context::current().isExtensionSupported<GL::Extensions::ARB::explicit_attrib_location>(version)) |
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#endif |
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{ |
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bindAttributeLocation(Position::Location, "position"); |
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#if !defined(MAGNUM_TARGET_GLES) || defined(MAGNUM_TARGET_GLES2) |
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#ifndef MAGNUM_TARGET_GLES |
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if(!GL::Context::current().isVersionSupported(GL::Version::GL310)) |
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#endif |
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{ |
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bindAttributeLocation(VertexIndex::Location, "vertexIndex"); |
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} |
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#endif |
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} |
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#endif |
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CORRADE_INTERNAL_ASSERT_OUTPUT(link()); |
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#ifndef MAGNUM_TARGET_GLES |
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if(!GL::Context::current().isExtensionSupported<GL::Extensions::ARB::explicit_uniform_location>(version)) |
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#endif |
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{ |
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_transformationProjectionMatrixUniform = uniformLocation("transformationProjectionMatrix"); |
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_colorUniform = uniformLocation("color"); |
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if(flags & Flag::Wireframe) { |
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_wireframeColorUniform = uniformLocation("wireframeColor"); |
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_wireframeWidthUniform = uniformLocation("wireframeWidth"); |
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_smoothnessUniform = uniformLocation("smoothness"); |
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if(!(flags & Flag::NoGeometryShader)) |
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_viewportSizeUniform = uniformLocation("viewportSize"); |
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} |
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} |
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/* Set defaults in OpenGL ES (for desktop they are set in shader code itself) */ |
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#ifdef MAGNUM_TARGET_GLES |
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setTransformationProjectionMatrix({}); |
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setColor(Color3(1.0f)); |
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if(_flags & Flag::Wireframe) { |
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/* Viewport size is zero by default */ |
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setWireframeColor(Color3{0.0f}); |
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setWireframeWidth(1.0f); |
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setSmoothness(2.0f); |
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} |
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#endif |
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} |
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Debug& operator<<(Debug& debug, const MeshVisualizer::Flag value) { |
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switch(value) { |
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/* LCOV_EXCL_START */ |
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#define _c(v) case MeshVisualizer::Flag::v: return debug << "Shaders::MeshVisualizer::Flag::" #v; |
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_c(NoGeometryShader) |
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_c(Wireframe) |
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#undef _c |
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/* LCOV_EXCL_STOP */ |
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} |
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return debug << "Shaders::MeshVisualizer::Flag(" << Debug::nospace << reinterpret_cast<void*>(UnsignedByte(value)) << Debug::nospace << ")"; |
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} |
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Debug& operator<<(Debug& debug, const MeshVisualizer::Flags value) { |
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return Containers::enumSetDebugOutput(debug, value, "Shaders::MeshVisualizer::Flags{}", { |
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MeshVisualizer::Flag::Wireframe, |
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/* Wireframe contains this on ES2 so it's not reported there */ |
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MeshVisualizer::Flag::NoGeometryShader |
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}); |
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} |
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}}
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