PushBuffer fixes

Author: VReaperV

src/engine/renderer/GLMemory.h

@@ -51,7 +51,7 @@ class GLBuffer {
 	std::string name;
 	const GLuint64 SYNC_TIMEOUT = 10000000000; // 10 seconds
 
-	GLuint id;
+	GLuint id = 0;
 
 	GLBuffer( const char* newName, const GLuint newBindingPoint, const GLbitfield newFlags, const GLbitfield newMapFlags ) :
 		name( newName ),

src/engine/renderer/Material.cpp

@@ -1669,8 +1669,9 @@ void MaterialSystem::DepthReduction() {
 	uint32_t globalWorkgroupX = ( width + 7 ) / 8;
 	uint32_t globalWorkgroupY = ( height + 7 ) / 8;
 
-	// FIXME: u_DepthMap object on the shader is not actually used
-	GL_Bind( tr.currentDepthImage );
+	gl_depthReductionShader->SetUniform_DepthMapBindless(
+		GL_BindToTMU( 0, tr.currentDepthImage )
+	);
 	glBindImageTexture( 2, depthImage->texnum, 0, GL_FALSE, 0, GL_WRITE_ONLY, GL_R32F );
 
 	gl_depthReductionShader->SetUniform_InitialDepthLevel( true );

src/engine/renderer/tr_bsp.cpp

@@ -4659,9 +4659,11 @@ static void SetConstUniforms() {
 			globalUBOProxy->SetUniform_ColorMap3DBindless( GL_BindToTMU( 3, tr.colorGradeImage ) );
 		}
 
-		globalUBOProxy->SetUniform_DepthMapBindless( GL_BindToTMU( 1, tr.currentDepthImage ) );
+		globalUBOProxy->SetUniform_DepthMapBindless( GL_BindToTMU( 1, tr.depthSamplerImage ) );
 
-		globalUBOProxy->SetUniform_PortalMapBindless( GL_BindToTMU( 1, tr.portalRenderImage ) );
+		if ( r_liquidMapping->integer ) {
+			globalUBOProxy->SetUniform_PortalMapBindless( GL_BindToTMU( 1, tr.portalRenderImage ) );
+		}
 
 		if ( glConfig.realtimeLighting ) {
 			globalUBOProxy->SetUniform_DepthTile1Bindless(