Rendering now to a HyprFramebuffer

src/render/Framebuffer.cpp

@@ -20,7 +20,7 @@ bool CFramebuffer::alloc(int w, int h) {
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
     }
 
-    if (firstAlloc)
+    if (firstAlloc || m_Size != Vector2D(w, h))
     {
         glBindTexture(GL_TEXTURE_2D, m_cTex.m_iTexID);
         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);

src/render/OpenGL.cpp

@@ -108,10 +108,32 @@ void CHyprOpenGLImpl::begin(SMonitor* pMonitor) {
     glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 
     glGetIntegerv(GL_FRAMEBUFFER_BINDING, &m_iCurrentOutputFb);
+    m_iWLROutputFb = m_iCurrentOutputFb;
+
+    // ensure a framebuffer for the monitor exists
+    if (m_mMonitorFramebuffers.find(pMonitor) == m_mMonitorFramebuffers.end() || m_mMonitorFramebuffers[pMonitor].m_Size != pMonitor->vecSize)  
+        m_mMonitorFramebuffers[pMonitor].alloc(pMonitor->vecSize.x, pMonitor->vecSize.y);
+
+    // bind the Hypr Framebuffer
+    m_mMonitorFramebuffers[pMonitor].bind();
+    clear(CColor(11, 11, 11, 255));
 }
 
 void CHyprOpenGLImpl::end() {
+    // end the render, copy the data to the WLR framebuffer
+    glBindFramebuffer(GL_FRAMEBUFFER, m_iWLROutputFb);
+    const auto TRANSFORM = wlr_output_transform_invert(WL_OUTPUT_TRANSFORM_NORMAL);
+    float matrix[9];
+    wlr_box windowBox = {0, 0, m_RenderData.pMonitor->vecSize.x, m_RenderData.pMonitor->vecSize.y};
+    wlr_matrix_project_box(matrix, &windowBox, TRANSFORM, 0, m_RenderData.pMonitor->output->transform_matrix);
+
+    clear(CColor(11, 11, 11, 255));
+
+    renderTexture(m_mMonitorFramebuffers[m_RenderData.pMonitor].m_cTex, matrix, 255.f, 0);
+
+    // reset our data
     m_RenderData.pMonitor = nullptr;
+    m_iWLROutputFb = 0;
 }
 
 void CHyprOpenGLImpl::clear(const CColor& color) {

src/render/OpenGL.hpp

@@ -51,8 +51,10 @@ public:
     SCurrentRenderData m_RenderData;
 
     GLint  m_iCurrentOutputFb = 0;
+    GLint  m_iWLROutputFb = 0;
 
     std::unordered_map<CWindow*, CFramebuffer> m_mWindowFramebuffers;
+    std::unordered_map<SMonitor*, CFramebuffer> m_mMonitorFramebuffers;
 
 private:
     std::list<GLuint>       m_lBuffers;