| /* |
| * Copyright (C) 2022 Metrological Group B.V. |
| * Copyright (C) 2022 Igalia S.L. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "TextureMapperPlatformLayerDmabuf.h" |
| |
| #if USE(ANGLE) && USE(NICOSIA) |
| |
| #include "GLContextEGL.h" |
| |
| #if USE(LIBEPOXY) |
| #include "EpoxyEGL.h" |
| #else |
| #include <EGL/egl.h> |
| #include <EGL/eglext.h> |
| #endif |
| |
| #include <unistd.h> |
| |
| namespace WebCore { |
| |
| static constexpr uint32_t createFourCC(char a, char b, char c, char d) |
| { |
| return uint32_t(a) | (uint32_t(b) << 8) | (uint32_t(c) << 16) | (uint32_t(d) << 24); |
| } |
| |
| static GLint fourCCToGLFormat(uint32_t format) |
| { |
| ASSERT((format == createFourCC('X', 'R', '2', '4')) || (format == createFourCC('A', 'R', '2', '4'))); |
| return (format == createFourCC('A', 'R', '2', '4')) ? GL_RGBA : GL_RGB; |
| } |
| |
| static bool formatHasAlpha(uint32_t format) |
| { |
| ASSERT((format == createFourCC('X', 'R', '2', '4')) || (format == createFourCC('A', 'R', '2', '4'))); |
| return (format == createFourCC('A', 'R', '2', '4')) ? true : false; |
| } |
| |
| TextureMapperPlatformLayerDmabuf::TextureMapperPlatformLayerDmabuf(const IntSize& size, uint32_t format, uint32_t stride, int fd) |
| : TextureMapperPlatformLayerBuffer({ RGBTexture { 0 } }, size, TextureMapperGL::ShouldFlipTexture | (formatHasAlpha(format) ? TextureMapperGL::ShouldBlend : 0), fourCCToGLFormat(format)) |
| , m_format(format) |
| , m_stride(stride) |
| , m_fd(dup(fd)) |
| { |
| } |
| |
| TextureMapperPlatformLayerDmabuf::~TextureMapperPlatformLayerDmabuf() |
| { |
| ASSERT(std::holds_alternative<RGBTexture>(m_variant)); |
| auto& texture = std::get<RGBTexture>(m_variant); |
| if (texture.id) |
| glDeleteTextures(1, &texture.id); |
| close(m_fd); |
| } |
| |
| void TextureMapperPlatformLayerDmabuf::validateTexture() |
| { |
| ASSERT(std::holds_alternative<RGBTexture>(m_variant)); |
| auto& texture = std::get<RGBTexture>(m_variant); |
| if (texture.id) |
| return; |
| |
| auto* context = GLContext::current(); |
| ASSERT(context->isEGLContext()); |
| |
| context->makeContextCurrent(); |
| |
| auto size = TextureMapperPlatformLayerBuffer::size(); |
| Vector<EGLAttrib> imageAttributes { |
| EGL_WIDTH, size.width(), |
| EGL_HEIGHT, size.height(), |
| EGL_LINUX_DRM_FOURCC_EXT, static_cast<EGLAttrib>(m_format), |
| EGL_DMA_BUF_PLANE0_FD_EXT, m_fd, |
| EGL_DMA_BUF_PLANE0_PITCH_EXT, static_cast<EGLAttrib>(m_stride), |
| EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0, |
| EGL_NONE |
| }; |
| auto image = downcast<GLContextEGL>(*context).createImage(EGL_LINUX_DMA_BUF_EXT, (EGLClientBuffer)nullptr, imageAttributes); |
| if (!image) |
| return; |
| |
| glGenTextures(1, &texture.id); |
| glBindTexture(GL_TEXTURE_2D, texture.id); |
| glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
| |
| RELEASE_ASSERT(downcast<GLContextEGL>(*context).destroyImage(image)); |
| } |
| |
| void TextureMapperPlatformLayerDmabuf::paintToTextureMapper(TextureMapper& textureMapper, const FloatRect& targetRect, const TransformationMatrix& modelViewMatrix, float opacity) |
| { |
| validateTexture(); |
| TextureMapperPlatformLayerBuffer::paintToTextureMapper(textureMapper, targetRect, modelViewMatrix, opacity); |
| } |
| |
| std::unique_ptr<TextureMapperPlatformLayerBuffer> TextureMapperPlatformLayerDmabuf::clone() |
| { |
| validateTexture(); |
| return TextureMapperPlatformLayerBuffer::clone(); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // USE(ANGLE) && USE(NICOSIA) |