2 * Copyright (c) 2021 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include <dali/internal/render/renderers/render-frame-buffer.h>
21 #include <dali/internal/render/renderers/render-texture.h>
31 const GLenum COLOR_ATTACHMENTS[] =
44 FrameBuffer::FrameBuffer(uint32_t width, uint32_t height, Mask attachments)
47 mDepthBuffer(attachments & Dali::FrameBuffer::Attachment::DEPTH),
48 mStencilBuffer(attachments & Dali::FrameBuffer::Attachment::STENCIL),
51 mColorAttachmentCount(0u)
55 FrameBuffer::~FrameBuffer() = default;
57 void FrameBuffer::Destroy(Context& context)
61 context.DeleteFramebuffers(1, &mId);
65 void FrameBuffer::GlContextDestroyed()
70 void FrameBuffer::Initialize(Context& context)
72 context.GenFramebuffers(1, &mId);
73 context.BindFramebuffer(GL_FRAMEBUFFER, mId);
77 // Create a depth render target.
78 context.GenRenderbuffers(1, &mDepthBuffer);
79 context.BindRenderbuffer(GL_RENDERBUFFER, mDepthBuffer);
80 context.RenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, mWidth, mHeight);
81 context.FramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, mDepthBuffer);
86 // Create a stencil render target.
87 context.GenRenderbuffers(1, &mStencilBuffer);
88 context.BindRenderbuffer(GL_RENDERBUFFER, mStencilBuffer);
89 context.RenderbufferStorage(GL_RENDERBUFFER, GL_STENCIL_INDEX8, mWidth, mHeight);
90 context.FramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, mStencilBuffer);
93 context.BindFramebuffer(GL_FRAMEBUFFER, 0);
96 void FrameBuffer::AttachColorTexture(Context& context, Render::Texture* texture, uint32_t mipmapLevel, uint32_t layer)
98 context.BindFramebuffer(GL_FRAMEBUFFER, mId);
100 const GLuint textureId = texture->GetId();
101 mTextureId[mColorAttachmentCount] = textureId;
103 // Create a color attachment.
104 const GLenum iAttachment = COLOR_ATTACHMENTS[mColorAttachmentCount];
105 if(texture->GetType() == TextureType::TEXTURE_2D)
107 context.FramebufferTexture2D(GL_FRAMEBUFFER, iAttachment, texture->GetTarget(), textureId, mipmapLevel);
111 context.FramebufferTexture2D(GL_FRAMEBUFFER, iAttachment, GL_TEXTURE_CUBE_MAP_POSITIVE_X + layer, textureId, mipmapLevel);
114 ++mColorAttachmentCount;
115 context.DrawBuffers(mColorAttachmentCount, COLOR_ATTACHMENTS);
116 DALI_ASSERT_DEBUG(context.CheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE);
118 context.BindFramebuffer(GL_FRAMEBUFFER, 0);
121 void FrameBuffer::AttachDepthTexture(Context& context, Render::Texture* texture, uint32_t mipmapLevel)
123 context.BindFramebuffer(GL_FRAMEBUFFER, mId);
125 // Create a depth attachment.
126 if(texture->GetType() == TextureType::TEXTURE_2D)
128 context.FramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, texture->GetId(), mipmapLevel);
131 context.BindFramebuffer(GL_FRAMEBUFFER, 0);
134 void FrameBuffer::AttachDepthStencilTexture(Context& context, Render::Texture* texture, uint32_t mipmapLevel)
136 context.BindFramebuffer(GL_FRAMEBUFFER, mId);
138 // Create a depth/stencil attachment.
139 if(texture->GetType() == TextureType::TEXTURE_2D)
141 context.FramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, texture->GetId(), mipmapLevel);
144 context.BindFramebuffer(GL_FRAMEBUFFER, 0);
147 void FrameBuffer::Bind(Context& context)
149 context.BindFramebuffer(GL_FRAMEBUFFER, mId);
152 uint32_t FrameBuffer::GetWidth() const
157 uint32_t FrameBuffer::GetHeight() const
162 } // namespace Render
164 } // namespace Internal