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322 lines
13 KiB
322 lines
13 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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2020, 2021, 2022, 2023, 2024, 2025, 2026 |
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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 "TextureImage.h" |
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#include "Magnum/Image.h" |
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#if defined(MAGNUM_BUILD_DEPRECATED) && !defined(MAGNUM_TARGET_GLES2) |
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#include "Magnum/GL/BufferImage.h" |
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#endif |
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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/Framebuffer.h" |
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#include "Magnum/GL/Texture.h" |
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#ifndef MAGNUM_TARGET_GLES2 |
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#include "Magnum/GL/TextureArray.h" |
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#endif |
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#if defined(MAGNUM_TARGET_GLES) && !defined(MAGNUM_TARGET_GLES2) |
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#include <Corrade/Containers/Iterable.h> |
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#include <Corrade/Containers/Reference.h> |
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#include <Corrade/Containers/StringView.h> |
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#include <Corrade/Utility/Resource.h> |
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#include "Magnum/GL/AbstractShaderProgram.h" |
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#include "Magnum/GL/Mesh.h" |
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#include "Magnum/GL/PixelFormat.h" |
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#include "Magnum/GL/Shader.h" |
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#include "Magnum/GL/TextureFormat.h" |
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#include "Magnum/GL/Version.h" |
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#ifdef MAGNUM_BUILD_STATIC |
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static void importDebugToolsResources() { |
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CORRADE_RESOURCE_INITIALIZE(MagnumDebugTools_RESOURCES) |
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} |
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#endif |
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#endif |
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namespace Magnum { namespace DebugTools { |
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#if defined(MAGNUM_TARGET_GLES) && !defined(MAGNUM_TARGET_GLES2) |
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using namespace Containers::Literals; |
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namespace { |
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class FloatReinterpretShader: public GL::AbstractShaderProgram { |
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public: |
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explicit FloatReinterpretShader(); |
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FloatReinterpretShader& setTexture(GL::Texture2D& texture, Int level) { |
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texture.bind(0); |
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setUniform(_levelUniform, level); |
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return *this; |
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} |
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private: |
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Int _levelUniform; |
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}; |
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FloatReinterpretShader::FloatReinterpretShader() { |
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#ifdef MAGNUM_BUILD_STATIC |
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importDebugToolsResources(); |
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#endif |
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Utility::Resource rs{"MagnumDebugTools"}; |
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GL::Shader vert{GL::Version::GLES300, GL::Shader::Type::Vertex}; |
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GL::Shader frag{GL::Version::GLES300, GL::Shader::Type::Fragment}; |
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if(!GL::Context::current().isExtensionSupported<GL::Extensions::MAGNUM::shader_vertex_id>()) |
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vert.addSource("#define DISABLE_GL_MAGNUM_shader_vertex_id\n"_s); |
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vert.addSource(rs.getString("TextureImage.vert"_s)); |
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frag.addSource(rs.getString("TextureImage.frag"_s)); |
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CORRADE_INTERNAL_ASSERT_OUTPUT(vert.compile() && frag.compile()); |
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attachShaders({vert, frag}); |
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if(!GL::Context::current().isExtensionSupported<GL::Extensions::MAGNUM::shader_vertex_id>()) { |
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bindAttributeLocation(0, "position"_s); |
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} |
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CORRADE_INTERNAL_ASSERT_OUTPUT(link()); |
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_levelUniform = uniformLocation("level"_s); |
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setUniform(uniformLocation("textureData"_s), 0); |
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} |
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} |
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#endif |
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void textureSubImage(GL::Texture2D& texture, const Int level, const Range2Di& range, Image2D& image) { |
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#ifndef MAGNUM_TARGET_GLES |
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if(GL::Context::current().isExtensionSupported<GL::Extensions::ARB::get_texture_sub_image>()) { |
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texture.subImage(level, range, image); |
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return; |
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} |
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#endif |
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/* While I cannot reproduce this on any drivers I tried, not even on WebGL, |
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the ES3.0 and 3.1 spec says that Float isn't guaranteed to be supported, |
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only UnsignedByte and Int or UnsignedInt. I could probably do some |
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comparison against fb.implementationColorReadFormat() but this is more |
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straightforward. |
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ES3.2 says Float is supported. What still isn't guaranteed to be |
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supported are one-, two- and three-component formats, but so far I |
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didn't have a problem with these anywhere. |
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Half floats aren't guaranteed to be supported either, but given that I |
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cannot reproduce this issue anywhere anymore, I don't think I should |
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waste time implementing a half-float variant. */ |
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/** @todo or just remove this altogether? */ |
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#if defined(MAGNUM_TARGET_GLES) && !defined(MAGNUM_TARGET_GLES2) |
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GL::PixelType type = GL::pixelType(image.format(), image.formatExtra()); |
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if(type == GL::PixelType::Float |
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#ifndef MAGNUM_TARGET_WEBGL |
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&& !GL::Context::current().isVersionSupported(GL::Version::GLES320) |
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#endif |
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) { |
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GL::TextureFormat textureFormat; |
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GL::PixelFormat reinterpretFormat; |
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GL::PixelFormat format = GL::pixelFormat(image.format()); |
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switch(format) { |
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case GL::PixelFormat::Red: |
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textureFormat = GL::TextureFormat::R32UI; |
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reinterpretFormat = GL::PixelFormat::RedInteger; |
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break; |
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case GL::PixelFormat::RG: |
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textureFormat = GL::TextureFormat::RG32UI; |
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reinterpretFormat = GL::PixelFormat::RGInteger; |
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break; |
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case GL::PixelFormat::RGB: |
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textureFormat = GL::TextureFormat::RGB32UI; |
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reinterpretFormat = GL::PixelFormat::RGBInteger; |
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break; |
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case GL::PixelFormat::RGBA: |
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textureFormat = GL::TextureFormat::RGBA32UI; |
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reinterpretFormat = GL::PixelFormat::RGBAInteger; |
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break; |
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default: |
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CORRADE_ASSERT_UNREACHABLE("DebugTools::textureSubImage(): unsupported pixel format" << format, ); |
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} |
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GL::Texture2D output; |
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output.setStorage(1, textureFormat, range.max()); |
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GL::Framebuffer fb{range}; |
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fb.attachTexture(GL::Framebuffer::ColorAttachment{0}, output, 0) |
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.bind(); |
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CORRADE_INTERNAL_ASSERT(fb.checkStatus(GL::FramebufferTarget::Draw) == GL::Framebuffer::Status::Complete); |
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CORRADE_INTERNAL_ASSERT(fb.checkStatus(GL::FramebufferTarget::Read) == GL::Framebuffer::Status::Complete); |
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FloatReinterpretShader shader; |
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shader.setTexture(texture, level); |
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GL::Mesh mesh; |
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mesh.setCount(3); |
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if(!GL::Context::current().isExtensionSupported<GL::Extensions::MAGNUM::shader_vertex_id>()) { |
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constexpr Vector2 triangle[]{ |
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{-1.0f, 1.0f}, |
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{-1.0f, -3.0f}, |
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{ 3.0f, 1.0f} |
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}; |
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GL::Buffer buffer{GL::Buffer::TargetHint::Array}; |
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buffer.setData(triangle, GL::BufferUsage::StaticDraw); |
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mesh.addVertexBuffer(Utility::move(buffer), 0, GL::Attribute<0, Vector2>{}); |
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} |
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shader.draw(mesh); |
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/* release() needs to be called after querying the size to avoid zeroing it out */ |
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const Vector2i imageSize = image.size(); |
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Image2D temp{image.storage(), reinterpretFormat, GL::PixelType::UnsignedInt, imageSize, image.release()}; |
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fb.read(range, temp); |
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image = Image2D{image.storage(), image.format(), image.formatExtra(), image.pixelSize(), range.size(), temp.release()}; |
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return; |
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} |
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#endif |
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GL::Framebuffer fb{range}; |
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fb.attachTexture(GL::Framebuffer::ColorAttachment{0}, texture, level); |
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CORRADE_ASSERT(fb.checkStatus(GL::FramebufferTarget::Read) == GL::Framebuffer::Status::Complete, |
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"DebugTools::textureSubImage(): texture format not framebuffer-readable:" << fb.checkStatus(GL::FramebufferTarget::Read), ); |
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fb.read(range, image); |
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} |
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Image2D textureSubImage(GL::Texture2D& texture, const Int level, const Range2Di& range, Image2D&& image) { |
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textureSubImage(texture, level, range, image); |
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return Utility::move(image); |
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} |
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#if defined(MAGNUM_BUILD_DEPRECATED) && !defined(MAGNUM_TARGET_GLES2) |
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void textureSubImage(GL::Texture2D& texture, const Int level, const Range2Di& range, GL::BufferImage2D& image, const GL::BufferUsage usage) { |
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#ifndef MAGNUM_TARGET_GLES |
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if(GL::Context::current().isExtensionSupported<GL::Extensions::ARB::get_texture_sub_image>()) { |
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texture.subImage(level, range, image, usage); |
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return; |
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} |
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#endif |
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GL::Framebuffer fb{range}; |
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fb.attachTexture(GL::Framebuffer::ColorAttachment{0}, texture, level); |
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CORRADE_ASSERT(fb.checkStatus(GL::FramebufferTarget::Read) == GL::Framebuffer::Status::Complete, |
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"DebugTools::textureSubImage(): texture format not framebuffer-readable:" << fb.checkStatus(GL::FramebufferTarget::Read), ); |
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fb.read(range, image, usage); |
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} |
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GL::BufferImage2D textureSubImage(GL::Texture2D& texture, const Int level, const Range2Di& range, GL::BufferImage2D&& image, const GL::BufferUsage usage) { |
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CORRADE_IGNORE_DEPRECATED_PUSH |
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textureSubImage(texture, level, range, image, usage); |
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CORRADE_IGNORE_DEPRECATED_POP |
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return Utility::move(image); |
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} |
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#endif |
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#ifndef MAGNUM_TARGET_GLES2 |
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void textureSubImage(GL::Texture2DArray& texture, const Int level, const Int layer, const Range2Di& range, Image2D& image) { |
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#ifndef MAGNUM_TARGET_GLES |
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if(GL::Context::current().isExtensionSupported<GL::Extensions::ARB::get_texture_sub_image>()) { |
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/* Make a temporary Image3D out of the input Image2D, read the pixels |
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into it, and then move its ownership back to the Image2D */ |
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/** @todo have this on the Image APIs itself, in particular a |
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rvalue-only ability to "updimension", and similarly a rvalue-only |
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dimension slice */ |
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Vector2i size = image.size(); |
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Containers::Array<char> data = image.release(); |
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Image3D image3{image.storage(), image.format(), image.formatExtra(), image.pixelSize(), {size, 1}, Utility::move(data)}; |
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texture.subImage(level, {{range.min(), layer}, {range.max(), layer + 1}}, image3); |
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Vector3i size3 = image3.size(); |
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Containers::Array<char> data3 = image3.release(); |
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image = Image2D{image3.storage(), image3.format(), image3.formatExtra(), image3.pixelSize(), size3.xy(), Utility::move(data3)}; |
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return; |
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} |
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#endif |
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GL::Framebuffer fb{range}; |
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fb.attachTextureLayer(GL::Framebuffer::ColorAttachment{0}, texture, level, layer); |
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CORRADE_ASSERT(fb.checkStatus(GL::FramebufferTarget::Read) == GL::Framebuffer::Status::Complete, |
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"DebugTools::textureSubImage(): texture format not framebuffer-readable:" << fb.checkStatus(GL::FramebufferTarget::Read), ); |
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fb.read(range, image); |
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} |
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Image2D textureSubImage(GL::Texture2DArray& texture, const Int level, const Int layer, const Range2Di& range, Image2D&& image) { |
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textureSubImage(texture, level, layer, range, image); |
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return Utility::move(image); |
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} |
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#endif |
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void textureSubImage(GL::CubeMapTexture& texture, const GL::CubeMapCoordinate coordinate, const Int level, const Range2Di& range, Image2D& image) { |
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/* Compared to textureSubImage(GL::CubeMapTexture&, ..., Image3D&), here's |
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no ARB_get_texture_sub_image code path because it only works with 3D |
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images */ |
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/** @todo implement a Image3D variant with this extension used once |
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convenient Image slicing and direct allocation is done */ |
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GL::Framebuffer fb{range}; |
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fb.attachCubeMapTexture(GL::Framebuffer::ColorAttachment{0}, texture, coordinate, level); |
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/* Compared to textureSubImage(GL::Texture2D&), here's no specialized code |
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path for float formats, as it's impossible to sample it in a shader with |
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2D coordinates. It's also questionable if that's still needed. */ |
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/** @todo or just remove this altogether? */ |
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CORRADE_ASSERT(fb.checkStatus(GL::FramebufferTarget::Read) == GL::Framebuffer::Status::Complete, |
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"DebugTools::textureSubImage(): texture format not framebuffer-readable:" << fb.checkStatus(GL::FramebufferTarget::Read), ); |
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fb.read(range, image); |
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} |
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Image2D textureSubImage(GL::CubeMapTexture& texture, const GL::CubeMapCoordinate coordinate, const Int level, const Range2Di& range, Image2D&& image) { |
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textureSubImage(texture, coordinate, level, range, image); |
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return Utility::move(image); |
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} |
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#if defined(MAGNUM_BUILD_DEPRECATED) && !defined(MAGNUM_TARGET_GLES2) |
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void textureSubImage(GL::CubeMapTexture& texture, const GL::CubeMapCoordinate coordinate, const Int level, const Range2Di& range, GL::BufferImage2D& image, const GL::BufferUsage usage) { |
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GL::Framebuffer fb{range}; |
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fb.attachCubeMapTexture(GL::Framebuffer::ColorAttachment{0}, texture, coordinate, level); |
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CORRADE_ASSERT(fb.checkStatus(GL::FramebufferTarget::Read) == GL::Framebuffer::Status::Complete, |
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"DebugTools::textureSubImage(): texture format not framebuffer-readable:" << fb.checkStatus(GL::FramebufferTarget::Read), ); |
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fb.read(range, image, usage); |
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} |
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GL::BufferImage2D textureSubImage(GL::CubeMapTexture& texture, const GL::CubeMapCoordinate coordinate, const Int level, const Range2Di& range, GL::BufferImage2D&& image, const GL::BufferUsage usage) { |
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CORRADE_IGNORE_DEPRECATED_PUSH |
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textureSubImage(texture, coordinate, level, range, image, usage); |
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CORRADE_IGNORE_DEPRECATED_POP |
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return Utility::move(image); |
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} |
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#endif |
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}}
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