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#include "GLFramebuffer.hpp"
#include "../OpenGL.hpp"
#include "../Renderer.hpp"
#include "macros.hpp"
#include "../Framebuffer.hpp"
#include <hyprgraphics/egl/Egl.hpp>
using namespace Hyprgraphics::Egl;
using namespace Render::GL;
CGLFramebuffer::CGLFramebuffer() : IFramebuffer() {}
CGLFramebuffer::CGLFramebuffer(const std::string& name) : IFramebuffer(name) {}
bool CGLFramebuffer::internalAlloc(int w, int h, uint32_t drmFormat) {
g_pHyprOpenGL->makeEGLCurrent();
if (!m_tex) {
m_tex = g_pHyprRenderer->createTexture();
m_tex->allocate({w, h});
m_tex->bind();
m_tex->setTexParameter(GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
m_tex->setTexParameter(GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
m_tex->setTexParameter(GL_TEXTURE_MAG_FILTER, GL_LINEAR);
m_tex->setTexParameter(GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
if (!m_fbAllocated) {
glGenFramebuffers(1, &m_fb);
m_fbAllocated = true;
}
const auto format = getPixelFormatFromDRM(drmFormat);
m_tex->bind();
glTexImage2D(GL_TEXTURE_2D, 0, format->glInternalFormat ? format->glInternalFormat : format->glFormat, w, h, 0, format->glFormat, format->glType, nullptr);
glBindFramebuffer(GL_FRAMEBUFFER, m_fb);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_tex->m_texID, 0);
if (m_mirrorTex) {
const auto format = getPixelFormatFromDRM(m_mirrorTex->m_drmFormat);
m_mirrorTex->bind();
glTexImage2D(GL_TEXTURE_2D, 0, format->glInternalFormat ? format->glInternalFormat : format->glFormat, w, h, 0, format->glFormat, format->glType, nullptr);
glBindFramebuffer(GL_FRAMEBUFFER, m_fb);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, m_mirrorTex->m_texID, 0);
} else
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, 0, 0);
if (m_stencilTex && m_stencilTex->ok()) {
m_stencilTex->bind();
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, w, h, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, nullptr);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, m_stencilTex->m_texID, 0);
glDisable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
}
auto status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
RASSERT((status == GL_FRAMEBUFFER_COMPLETE), "Framebuffer incomplete, couldn't create! (FB status: {}, GL Error: 0x{:x})", status, sc<int>(glGetError()));
if (m_stencilTex && m_stencilTex->ok())
m_stencilTex->unbind();
Log::logger->log(Log::DEBUG, "Framebuffer \"{}\" created, status {}", m_name, status);
glBindTexture(GL_TEXTURE_2D, 0);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
return true;
}
void CGLFramebuffer::addStencil(SP<ITexture> tex) {
if (m_stencilTex == tex)
return;
RASSERT(!m_fbAllocated, "Should add stencil tex prior to FB allocation")
m_stencilTex = tex;
}
void CGLFramebuffer::bind() {
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fb);
if (g_pHyprOpenGL) {
const auto& size = g_pHyprRenderer->m_renderData.pMonitor ? g_pHyprRenderer->m_renderData.pMonitor->m_pixelSize : m_size;
g_pHyprOpenGL->setViewport(0, 0, size.x, size.y);
} else
glViewport(0, 0, m_size.x, m_size.y);
}
void CGLFramebuffer::unbind() {
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
}
void CGLFramebuffer::release() {
if (m_fbAllocated) {
glBindFramebuffer(GL_FRAMEBUFFER, m_fb);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0);
if (m_mirrorTex)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, 0, 0);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glDeleteFramebuffers(1, &m_fb);
m_fbAllocated = false;
m_fb = 0;
}
if (m_tex)
m_tex.reset();
m_size = Vector2D();
}
bool CGLFramebuffer::readPixels(CHLBufferReference buffer, uint32_t offsetX, uint32_t offsetY, uint32_t width, uint32_t height) {
auto shm = buffer->shm();
auto [pixelData, fmt, bufLen] = buffer->beginDataPtr(0); // no need for end, cuz it's shm
const auto PFORMAT = getPixelFormatFromDRM(shm.format);
if (!PFORMAT) {
LOGM(Log::ERR, "Can't copy: failed to find a pixel format");
return false;
}
g_pHyprOpenGL->makeEGLCurrent();
glBindFramebuffer(GL_READ_FRAMEBUFFER, getFBID());
bind();
glPixelStorei(GL_PACK_ALIGNMENT, 1);
uint32_t packStride = minStride(PFORMAT, m_size.x);
int glFormat = PFORMAT->glFormat;
if (glFormat == GL_RGBA)
glFormat = GL_BGRA_EXT;
if (glFormat != GL_BGRA_EXT && glFormat != GL_RGB) {
if (PFORMAT->swizzle.has_value()) {
if (PFORMAT->swizzle == SWIZZLE_RGBA)
glFormat = GL_RGBA;
else if (PFORMAT->swizzle == SWIZZLE_BGRA)
glFormat = GL_BGRA_EXT;
else {
LOGM(Log::ERR, "Copied frame via shm might be broken or color flipped");
glFormat = GL_RGBA;
}
}
}
// This could be optimized by using a pixel buffer object to make this async,
// but really clients should just use a dma buffer anyways.
if (packStride == sc<uint32_t>(shm.stride)) {
glReadPixels(offsetX, offsetY, width > 0 ? width : m_size.x, height > 0 ? height : m_size.y, glFormat, PFORMAT->glType, pixelData);
} else {
const auto h = height > 0 ? height : m_size.y;
for (size_t i = 0; i < h; ++i) {
uint32_t y = i;
glReadPixels(offsetX, offsetY + y, width > 0 ? width : m_size.x, 1, glFormat, PFORMAT->glType, pixelData + i * shm.stride);
}
}
unbind();
glPixelStorei(GL_PACK_ALIGNMENT, 4);
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
return true;
}
CGLFramebuffer::~CGLFramebuffer() {
release();
}
GLuint CGLFramebuffer::getFBID() {
return m_fbAllocated ? m_fb : 0;
}
void CGLFramebuffer::invalidate(const std::vector<GLenum>& attachments) {
if (!isAllocated())
return;
glInvalidateFramebuffer(GL_FRAMEBUFFER, attachments.size(), attachments.data());
}
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