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VideoBackends: add support to allow rendering to multiple output textures

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This commit is contained in:
iwubcode
2023-05-28 20:59:02 -05:00
parent 252d3f353a
commit 834f8f7b5c
43 changed files with 713 additions and 327 deletions
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36
Source/Core/VideoBackends/OGL/OGLTexture.cpp
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@ -543,11 +543,13 @@ void OGLStagingTexture::Unmap()
}
OGLFramebuffer::OGLFramebuffer(AbstractTexture* color_attachment, AbstractTexture* depth_attachment,
std::vector<AbstractTexture*> additional_color_attachments,
AbstractTextureFormat color_format,
AbstractTextureFormat depth_format, u32 width, u32 height,
u32 layers, u32 samples, GLuint fbo)
: AbstractFramebuffer(color_attachment, depth_attachment, color_format, depth_format, width,
height, layers, samples),
: AbstractFramebuffer(color_attachment, depth_attachment,
std::move(additional_color_attachments), color_format, depth_format,
width, height, layers, samples),
m_fbo(fbo)
{
}
@ -557,10 +559,11 @@ OGLFramebuffer::~OGLFramebuffer()
glDeleteFramebuffers(1, &m_fbo);
}
std::unique_ptr<OGLFramebuffer> OGLFramebuffer::Create(OGLTexture* color_attachment,
OGLTexture* depth_attachment)
std::unique_ptr<OGLFramebuffer>
OGLFramebuffer::Create(OGLTexture* color_attachment, OGLTexture* depth_attachment,
std::vector<AbstractTexture*> additional_color_attachments)
{
if (!ValidateConfig(color_attachment, depth_attachment))
if (!ValidateConfig(color_attachment, depth_attachment, additional_color_attachments))
return nullptr;
const AbstractTextureFormat color_format =
@ -577,6 +580,7 @@ std::unique_ptr<OGLFramebuffer> OGLFramebuffer::Create(OGLTexture* color_attachm
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
std::vector<GLenum> buffers;
if (color_attachment)
{
if (color_attachment->GetConfig().layers > 1)
@ -589,6 +593,7 @@ std::unique_ptr<OGLFramebuffer> OGLFramebuffer::Create(OGLTexture* color_attachm
glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
color_attachment->GetGLTextureId(), 0, 0);
}
buffers.push_back(GL_COLOR_ATTACHMENT0);
}
if (depth_attachment)
@ -607,10 +612,29 @@ std::unique_ptr<OGLFramebuffer> OGLFramebuffer::Create(OGLTexture* color_attachm
}
}
for (std::size_t i = 0; i < additional_color_attachments.size(); i++)
{
const auto attachment_enum = static_cast<GLenum>(GL_COLOR_ATTACHMENT0 + i + 1);
OGLTexture* attachment = static_cast<OGLTexture*>(additional_color_attachments[i]);
if (attachment->GetConfig().layers > 1)
{
glFramebufferTexture(GL_FRAMEBUFFER, attachment_enum, attachment->GetGLTextureId(), 0);
}
else
{
glFramebufferTextureLayer(GL_FRAMEBUFFER, attachment_enum, attachment->GetGLTextureId(), 0,
0);
}
buffers.push_back(attachment_enum);
}
glDrawBuffers(static_cast<GLsizei>(buffers.size()), buffers.data());
DEBUG_ASSERT(glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE);
GetOGLGfx()->RestoreFramebufferBinding();
return std::make_unique<OGLFramebuffer>(color_attachment, depth_attachment, color_format,
return std::make_unique<OGLFramebuffer>(color_attachment, depth_attachment,
std::move(additional_color_attachments), color_format,
depth_format, width, height, layers, samples, fbo);
}