Drop ENABLE_GLES option

ENABLE_GLES predates forking Irrlicht. Its primary use was to distinguish Irrlicht-ogles from upstream version as Minetest could be compiled with either.
That's not necessary anymore and gets in the way sometimes.

14 files changed, 34 insertions, 83 deletions

diff --git a/README.md b/README.md
index e3b752f9e..62d97c846 100644
--- a/README.md
+++ b/README.md
@@ -256,7 +256,6 @@ General options and their default values:
     ENABLE_CURL=ON             - Build with cURL; Enables use of online mod repo, public serverlist and remote media fetching via http
     ENABLE_CURSES=ON           - Build with (n)curses; Enables a server side terminal (command line option: --terminal)
     ENABLE_GETTEXT=ON          - Build with Gettext; Allows using translations
-    ENABLE_GLES=OFF            - Enable extra support code for OpenGL ES (requires support by IrrlichtMt)
     ENABLE_LEVELDB=ON          - Build with LevelDB; Enables use of LevelDB map backend
     ENABLE_POSTGRESQL=ON       - Build with libpq; Enables use of PostgreSQL map backend (PostgreSQL 9.5 or greater recommended)
     ENABLE_REDIS=ON            - Build with libhiredis; Enables use of Redis map backend
diff --git a/android/native/jni/Android.mk b/android/native/jni/Android.mk
index b2a8b3d6a..474dbd50c 100644
--- a/android/native/jni/Android.mk
+++ b/android/native/jni/Android.mk
@@ -103,7 +103,6 @@ LOCAL_MODULE := Minetest
 LOCAL_CFLAGS += \
 	-DJSONCPP_NO_LOCALE_SUPPORT     \
 	-DHAVE_TOUCHSCREENGUI           \
-	-DENABLE_GLES=1                 \
 	-DUSE_CURL=1                    \
 	-DUSE_SOUND=1                   \
 	-DUSE_LEVELDB=0                 \
diff --git a/builtin/settingtypes.txt b/builtin/settingtypes.txt
index 9d4de64d9..58168fa25 100644
--- a/builtin/settingtypes.txt
+++ b/builtin/settingtypes.txt
@@ -230,12 +230,6 @@ fall_bobbing_amount (Fall bobbing factor) float 0.03 0.0 100.0
 
 [**Camera]
 
-#   Camera 'near clipping plane' distance in nodes, between 0 and 0.25
-#   Only works on GLES platforms. Most users will not need to change this.
-#   Increasing can reduce artifacting on weaker GPUs.
-#   0.1 = Default, 0.25 = Good value for weaker tablets.
-near_plane (Near plane) float 0.1 0 0.25
-
 #    Field of view in degrees.
 fov (Field of view) int 72 45 160
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index afe008395..a00690b28 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -109,10 +109,6 @@ if(BUILD_CLIENT AND ENABLE_SOUND)
 	endif()
 endif()
 
-# TODO: this should be removed one day, we can enable it unconditionally
-option(ENABLE_GLES "Enable extra support code for OpenGL ES" FALSE)
-mark_as_advanced(ENABLE_GLES)
-
 option(ENABLE_TOUCH "Enable Touchscreen support" FALSE)
 if(ENABLE_TOUCH)
 	add_definitions(-DHAVE_TOUCHSCREENGUI)
diff --git a/src/client/camera.cpp b/src/client/camera.cpp
index 13ca7aa5c..dce94495b 100644
--- a/src/client/camera.cpp
+++ b/src/client/camera.cpp
@@ -599,13 +599,7 @@ void Camera::updateViewingRange()
 {
 	f32 viewing_range = g_settings->getFloat("viewing_range");
 
-	// Ignore near_plane setting on all other platforms to prevent abuse
-#if ENABLE_GLES
-	m_cameranode->setNearValue(rangelim(
-		g_settings->getFloat("near_plane"), 0.0f, 0.25f) * BS);
-#else
 	m_cameranode->setNearValue(0.1f * BS);
-#endif
 
 	m_draw_control.wanted_range = std::fmin(adjustDist(viewing_range, getFovMax()), 4000);
 	if (m_draw_control.range_all) {
diff --git a/src/client/guiscalingfilter.cpp b/src/client/guiscalingfilter.cpp
index 42508259f..fda525e3f 100644
--- a/src/client/guiscalingfilter.cpp
+++ b/src/client/guiscalingfilter.cpp
@@ -119,7 +119,6 @@ video::ITexture *guiScalingResizeCached(video::IVideoDriver *driver,
 			(u32)destrect.getHeight()));
 	imageScaleNNAA(srcimg, srcrect, destimg);
 
-#if ENABLE_GLES
 	// Some platforms are picky about textures being powers of 2, so expand
 	// the image dimensions to the next power of 2, if necessary.
 	if (!driver->queryFeature(video::EVDF_TEXTURE_NPOT)) {
@@ -131,7 +130,6 @@ video::ITexture *guiScalingResizeCached(video::IVideoDriver *driver,
 		destimg->drop();
 		destimg = po2img;
 	}
-#endif
 
 	// Convert the scaled image back into a texture.
 	scaled = driver->addTexture(scalename, destimg);
diff --git a/src/client/renderingengine.cpp b/src/client/renderingengine.cpp
index 1392b5567..74151423f 100644
--- a/src/client/renderingengine.cpp
+++ b/src/client/renderingengine.cpp
@@ -34,6 +34,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "render/factory.h"
 #include "inputhandler.h"
 #include "gettext.h"
+#include "filesys.h"
 #include "../gui/guiSkin.h"
 
 #if !defined(_WIN32) && !defined(__APPLE__) && !defined(__ANDROID__) && \
@@ -51,10 +52,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <winuser.h>
 #endif
 
-#if ENABLE_GLES
-#include "filesys.h"
-#endif
-
 RenderingEngine *RenderingEngine::s_singleton = nullptr;
 const float RenderingEngine::BASE_BLOOM_STRENGTH = 1.0f;
 
@@ -136,12 +133,10 @@ RenderingEngine::RenderingEngine(IEventReceiver *receiver)
 #ifdef __ANDROID__
 	params.PrivateData = porting::app_global;
 #endif
-#if ENABLE_GLES
 	// there is no standardized path for these on desktop
 	std::string rel_path = std::string("client") + DIR_DELIM
 			+ "shaders" + DIR_DELIM + "Irrlicht";
 	params.OGLES2ShaderPath = (porting::path_share + DIR_DELIM + rel_path + DIR_DELIM).c_str();
-#endif
 
 	m_device = createDeviceEx(params);
 	driver = m_device->getVideoDriver();
@@ -289,10 +284,8 @@ static bool getWindowHandle(irr::video::IVideoDriver *driver, HWND &hWnd)
 	const video::SExposedVideoData exposedData = driver->getExposedVideoData();
 
 	switch (driver->getDriverType()) {
-#if ENABLE_GLES
 	case video::EDT_OGLES1:
 	case video::EDT_OGLES2:
-#endif
 	case video::EDT_OPENGL:
 		hWnd = reinterpret_cast<HWND>(exposedData.OpenGLWin32.HWnd);
 		break;
diff --git a/src/client/shader.cpp b/src/client/shader.cpp
index ccecb22c3..ce662b41d 100644
--- a/src/client/shader.cpp
+++ b/src/client/shader.cpp
@@ -229,14 +229,12 @@ class MainShaderConstantSetter : public IShaderConstantSetter
 	CachedVertexShaderSetting<f32> m_perspective_zbias_vertex;
 	CachedPixelShaderSetting<f32> m_perspective_zbias_pixel;
 
-#if ENABLE_GLES
 	// Modelview matrix
 	CachedVertexShaderSetting<float, 16> m_world_view;
 	// Texture matrix
 	CachedVertexShaderSetting<float, 16> m_texture;
 	// Normal matrix
 	CachedVertexShaderSetting<float, 9> m_normal;
-#endif
 
 public:
 	MainShaderConstantSetter() :
@@ -256,11 +254,9 @@ public:
 		, m_perspective_bias1_pixel("xyPerspectiveBias1")
 		, m_perspective_zbias_vertex("zPerspectiveBias")
 		, m_perspective_zbias_pixel("zPerspectiveBias")
-#if ENABLE_GLES
 		, m_world_view("mWorldView")
 		, m_texture("mTexture")
 		, m_normal("mNormal")
-#endif
 	{}
 	~MainShaderConstantSetter() = default;
 
@@ -283,21 +279,21 @@ public:
 		worldViewProj *= worldView;
 		m_world_view_proj.set(*reinterpret_cast<float(*)[16]>(worldViewProj.pointer()), services);
 
-#if ENABLE_GLES
-		core::matrix4 texture = driver->getTransform(video::ETS_TEXTURE_0);
-		m_world_view.set(*reinterpret_cast<float(*)[16]>(worldView.pointer()), services);
-		m_texture.set(*reinterpret_cast<float(*)[16]>(texture.pointer()), services);
-
-		core::matrix4 normal;
-		worldView.getTransposed(normal);
-		sanity_check(normal.makeInverse());
-		float m[9] = {
-			normal[0], normal[1], normal[2],
-			normal[4], normal[5], normal[6],
-			normal[8], normal[9], normal[10],
-		};
-		m_normal.set(m, services);
-#endif
+		if (driver->getDriverType() == video::EDT_OGLES2) {
+			core::matrix4 texture = driver->getTransform(video::ETS_TEXTURE_0);
+			m_world_view.set(*reinterpret_cast<float(*)[16]>(worldView.pointer()), services);
+			m_texture.set(*reinterpret_cast<float(*)[16]>(texture.pointer()), services);
+
+			core::matrix4 normal;
+			worldView.getTransposed(normal);
+			sanity_check(normal.makeInverse());
+			float m[9] = {
+				normal[0], normal[1], normal[2],
+				normal[4], normal[5], normal[6],
+				normal[8], normal[9], normal[10],
+			};
+			m_normal.set(m, services);
+		}
 
 		// Set uniforms for Shadow shader
 		if (ShadowRenderer *shadow = RenderingEngine::get_shadow_renderer()) {
@@ -628,10 +624,7 @@ ShaderInfo ShaderSource::generateShader(const std::string &name,
 	video::IGPUProgrammingServices *gpu = driver->getGPUProgrammingServices();
 
 	// Create shaders header
-	bool use_gles = false;
-#if ENABLE_GLES
-	use_gles = driver->getDriverType() == video::EDT_OGLES2;
-#endif
+	bool use_gles = driver->getDriverType() == video::EDT_OGLES2;
 	std::stringstream shaders_header;
 	shaders_header
 		<< std::noboolalpha
diff --git a/src/client/tile.cpp b/src/client/tile.cpp
index 14fc316e7..8421465c4 100644
--- a/src/client/tile.cpp
+++ b/src/client/tile.cpp
@@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include <algorithm>
 #include <ICameraSceneNode.h>
+#include <IVideoDriver.h>
 #include "util/string.h"
 #include "util/container.h"
 #include "util/thread.h"
@@ -617,9 +618,7 @@ u32 TextureSource::generateTexture(const std::string &name)
 	video::ITexture *tex = NULL;
 
 	if (img != NULL) {
-#if ENABLE_GLES
 		img = Align2Npot2(img, driver);
-#endif
 		// Create texture from resulting image
 		tex = driver->addTexture(name.c_str(), img);
 		guiScalingCache(io::path(name.c_str()), driver, img);
@@ -819,9 +818,7 @@ void TextureSource::rebuildTexture(video::IVideoDriver *driver, TextureInfo &ti)
 	// shouldn't really need to be done, but can't hurt
 	std::set<std::string> source_image_names;
 	video::IImage *img = generateImage(ti.name, source_image_names);
-#if ENABLE_GLES
 	img = Align2Npot2(img, driver);
-#endif
 	// Create texture from resulting image
 	video::ITexture *t = NULL;
 	if (img) {
@@ -1055,8 +1052,6 @@ video::IImage* TextureSource::generateImage(const std::string &name, std::set<st
 	return baseimg;
 }
 
-#if ENABLE_GLES
-
 /**
  * Check and align image to npot2 if required by hardware
  * @param image image to check for npot2 alignment
@@ -1094,8 +1089,6 @@ video::IImage *Align2Npot2(video::IImage *image,
 	return targetimage;
 }
 
-#endif
-
 static std::string unescape_string(const std::string &str, const char esc = '\\')
 {
 	std::string out;
diff --git a/src/client/tile.h b/src/client/tile.h
index c60418d12..0597d093e 100644
--- a/src/client/tile.h
+++ b/src/client/tile.h
@@ -28,14 +28,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "util/numeric.h"
 #include "config.h"
 
-#if ENABLE_GLES
-#include <IVideoDriver.h>
-#endif
-
 class IGameDef;
 struct TileSpec;
 struct TileDef;
 
+namespace irr { namespace video { class IVideoDriver; } }
+
 typedef std::vector<video::SColor> Palette;
 
 /*
@@ -133,9 +131,7 @@ public:
 
 IWritableTextureSource *createTextureSource();
 
-#if ENABLE_GLES
 video::IImage *Align2Npot2(video::IImage *image, video::IVideoDriver *driver);
-#endif
 
 enum MaterialType{
 	TILE_MATERIAL_BASIC,
diff --git a/src/cmake_config.h.in b/src/cmake_config.h.in
index 17b70e268..19fb6d4a1 100644
--- a/src/cmake_config.h.in
+++ b/src/cmake_config.h.in
@@ -28,7 +28,6 @@
 #cmakedefine01 USE_SPATIAL
 #cmakedefine01 USE_SYSTEM_GMP
 #cmakedefine01 USE_REDIS
-#cmakedefine01 ENABLE_GLES
 #cmakedefine01 HAVE_ENDIAN_H
 #cmakedefine01 CURSES_HAVE_CURSES_H
 #cmakedefine01 CURSES_HAVE_NCURSES_H
diff --git a/src/defaultsettings.cpp b/src/defaultsettings.cpp
index ed9363a72..f7a32ee2e 100644
--- a/src/defaultsettings.cpp
+++ b/src/defaultsettings.cpp
@@ -186,9 +186,6 @@ void set_default_settings()
 	settings->setDefault("fps_max_unfocused", "20");
 	settings->setDefault("viewing_range", "190");
 	settings->setDefault("client_mesh_chunk", "1");
-#if ENABLE_GLES
-	settings->setDefault("near_plane", "0.1");
-#endif
 	settings->setDefault("screen_w", "1024");
 	settings->setDefault("screen_h", "600");
 	settings->setDefault("autosave_screensize", "true");
diff --git a/src/gui/guiEngine.cpp b/src/gui/guiEngine.cpp
index 54157c792..941ebe754 100644
--- a/src/gui/guiEngine.cpp
+++ b/src/gui/guiEngine.cpp
@@ -38,10 +38,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "client/fontengine.h"
 #include "client/guiscalingfilter.h"
 #include "irrlicht_changes/static_text.h"
-
-#if ENABLE_GLES
 #include "client/tile.h"
-#endif
 
 
 /******************************************************************************/
@@ -59,11 +56,15 @@ void TextDestGuiEngine::gotText(const std::wstring &text)
 /******************************************************************************/
 MenuTextureSource::~MenuTextureSource()
 {
-	for (const std::string &texture_to_delete : m_to_delete) {
-		const char *tname = texture_to_delete.c_str();
-		video::ITexture *texture = m_driver->getTexture(tname);
-		m_driver->removeTexture(texture);
+	u32 before = m_driver->getTextureCount();
+
+	for (const auto &it: m_to_delete) {
+		m_driver->removeTexture(it);
 	}
+	m_to_delete.clear();
+
+	infostream << "~MenuTextureSource() before cleanup: "<< before
+			<< " after: " << m_driver->getTextureCount() << std::endl;
 }
 
 /******************************************************************************/
@@ -75,7 +76,7 @@ video::ITexture *MenuTextureSource::getTexture(const std::string &name, u32 *id)
 	if (name.empty())
 		return NULL;
 
-#if ENABLE_GLES
+	// return if already loaded
 	video::ITexture *retval = m_driver->findTexture(name.c_str());
 	if (retval)
 		return retval;
@@ -86,12 +87,11 @@ video::ITexture *MenuTextureSource::getTexture(const std::string &name, u32 *id)
 
 	image = Align2Npot2(image, m_driver);
 	retval = m_driver->addTexture(name.c_str(), image);
-	m_to_delete.insert(name);
 	image->drop();
+
+	if (retval)
+		m_to_delete.push_back(retval);
 	return retval;
-#else
-	return m_driver->getTexture(name.c_str());
-#endif
 }
 
 /******************************************************************************/
diff --git a/src/gui/guiEngine.h b/src/gui/guiEngine.h
index 2f182ca81..a95bb3085 100644
--- a/src/gui/guiEngine.h
+++ b/src/gui/guiEngine.h
@@ -111,8 +111,8 @@ public:
 private:
 	/** driver to get textures from */
 	video::IVideoDriver *m_driver = nullptr;
-	/** set of texture names to delete */
-	std::set<std::string> m_to_delete;
+	/** set of textures to delete */
+	std::vector<video::ITexture*> m_to_delete;
 };
 
 /** GUIEngine specific implementation of OnDemandSoundFetcher */