Added legacy GLES2 renderer option

CMakeLists.txt

@@ -19,6 +19,11 @@ file(GLOB_RECURSE SRCFILES "src/*.cpp")
 
 add_executable(Hyprland ${SRCFILES})
 
+IF(LEGACY_RENDERER MATCHES true)
+    message(STATUS "Using the legacy GLES2 renderer!")
+    add_definitions( -DLEGACY_RENDERER )
+ENDIF(LEGACY_RENDERER MATCHES true)
+
 IF(CMAKE_BUILD_TYPE MATCHES Debug OR CMAKE_BUILD_TYPE MATCHES DEBUG)
     message(STATUS "Configuring Hyprland in Debug with CMake!")
 ELSE()

Makefile

@@ -59,6 +59,14 @@ idle-protocol.c:
 
 idle-protocol.o: idle-protocol.h
 
+legacyrenderer:
+	mkdir -p build && cmake --no-warn-unused-cli -DCMAKE_BUILD_TYPE:STRING=Release -DLEGACY_RENDERER:STRING=true -H./ -B./build -G Ninja
+	cmake --build ./build --config Release --target all -j 10
+
+legacyrendererdebug:
+	mkdir -p build && cmake --no-warn-unused-cli -DCMAKE_BUILD_TYPE:STRING=Debug -DLEGACY_RENDERER:STRING=true -H./ -B./build -G Ninja
+	cmake --build ./build --config Release --target all -j 10
+
 release:
 	mkdir -p build && cmake --no-warn-unused-cli -DCMAKE_BUILD_TYPE:STRING=Release -H./ -B./build -G Ninja
 	cmake --build ./build --config Release --target all -j 10

src/hyprerror/HyprError.cpp

@@ -64,8 +64,12 @@ void CHyprError::createQueued() {
     glBindTexture(GL_TEXTURE_2D, m_tTexture.m_iTexID);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_BLUE);
+    
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED);
+    #ifndef GLES2
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_BLUE);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED);
+    #endif
+    
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, PMONITOR->vecSize.x, PMONITOR->vecSize.y, 0, GL_RGBA, GL_UNSIGNED_BYTE, DATA);
 
     // delete cairo

src/includes.hpp

@@ -84,8 +84,15 @@ extern "C" {
 #undef static
 #endif
 
+#ifdef LEGACY_RENDERER
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#define GLES2
+#else
+#define GLES32
 #include <GLES3/gl32.h>
 #include <GLES3/gl3ext.h>
+#endif
 
 #include "helpers/Vector2D.hpp"
 

src/render/Framebuffer.cpp

@@ -30,15 +30,17 @@ bool CFramebuffer::alloc(int w, int h) {
         glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_cTex.m_iTexID, 0);
 
 
+        // TODO: Allow this with gles2
+        #ifndef GLES2
         if (m_pStencilTex) {
             glBindTexture(GL_TEXTURE_2D, m_pStencilTex->m_iTexID);
-            glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, w, h, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, 0);
 
             glBindFramebuffer(GL_FRAMEBUFFER, m_iFb);
             glBindTexture(GL_TEXTURE_2D, m_pStencilTex->m_iTexID);
 
             glFramebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, m_pStencilTex->m_iTexID, 0);
         }
+        #endif
 
         auto status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
         RASSERT((status == GL_FRAMEBUFFER_COMPLETE), "Framebuffer incomplete, couldn't create! (FB status: %i)", status);
@@ -55,7 +57,11 @@ bool CFramebuffer::alloc(int w, int h) {
 }
 
 void CFramebuffer::bind() {
+    #ifndef GLES2
     glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_iFb);
+    #else
+    glBindFramebuffer(GL_FRAMEBUFFER, m_iFb);
+    #endif
     glViewport(0, 0, g_pHyprOpenGL->m_RenderData.pMonitor->vecSize.x, g_pHyprOpenGL->m_RenderData.pMonitor->vecSize.y);
 }
 

src/render/OpenGL.cpp

@@ -18,6 +18,10 @@ CHyprOpenGLImpl::CHyprOpenGLImpl() {
     Debug::log(LOG, "Renderer: %s", glGetString(GL_RENDERER));
     Debug::log(LOG, "Supported extensions size: %d", std::count(m_szExtensions.begin(), m_szExtensions.end(), ' '));
 
+    #ifdef GLES2
+    Debug::log(WARN, "!RENDERER: Using the legacy GLES2 renderer!");
+    #endif
+
     // Init shaders
 
     GLuint prog = createProgram(QUADVERTSRC, QUADFRAGSRC);
@@ -509,7 +513,11 @@ void CHyprOpenGLImpl::makeWindowSnapshot(CWindow* pWindow) {
     g_pConfigManager->setInt("decoration:blur", BLURVAL);
 
     // restore original fb
+    #ifndef GLES2
     glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_iCurrentOutputFb);
+    #else
+    glBindFramebuffer(GL_FRAMEBUFFER, m_iCurrentOutputFb);
+    #endif
     glViewport(0, 0, g_pHyprOpenGL->m_RenderData.pMonitor->vecSize.x, g_pHyprOpenGL->m_RenderData.pMonitor->vecSize.y);
 
     end();
@@ -575,8 +583,10 @@ void CHyprOpenGLImpl::createBGTextureForMonitor(SMonitor* pMonitor) {
     glBindTexture(GL_TEXTURE_2D, PTEX->m_iTexID);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    #ifndef GLES2
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_BLUE);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED);
+    #endif
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, pMonitor->vecSize.x, pMonitor->vecSize.y, 0, GL_RGBA, GL_UNSIGNED_BYTE, DATA);
 
     cairo_surface_destroy(CAIROSURFACE);