rend: define GLES2 and GLES3

GLES2 will only use GL ES 2.0 API functions, compile-time linked
GLES3 loads functions dynamically and supports both GL ES 2.0 and 3.0

core/build.h

@@ -431,3 +431,7 @@
 #define SH4_RAM_CLOCK (100*1000*1000)		//[100000000] XTal(13.5) -> PLL (33.3) -> PLL 1:3 (100)	, also suplied to HOLLY chip
 #define G2_BUS_CLOCK (25*1000*1000)			//[25000000]  from Holly, from SH4_RAM_CLOCK w/ 2 2:1 plls
 
+#if defined(GLES) && !defined(GLES3)
+// Only use GL ES 2.0 API functions
+#define GLES2
+#endif

core/rend/gles/gl32funcs.c

@@ -2,10 +2,11 @@
 #include <GLES32/gl32.h>
 #include <EGL/egl.h>
 #include "gl32funcs.h"
+#include "build.h"
 
 void load_gles_symbols()
 {
-#ifdef _ANDROID
+#ifndef GLES2
 	for (int i = 0; rglgen_symbol_map[i].sym != NULL; i++)
 		*(void **)rglgen_symbol_map[i].ptr = eglGetProcAddress(rglgen_symbol_map[i].sym);
 #endif

core/rend/gles/gldraw.cpp

@@ -948,7 +948,7 @@ void SetMVS_Mode(ModifierVolumeMode mv_mode, ISP_Modvol ispc)
 
 static void SetupMainVBO()
 {
-#if !defined(GLES) || defined(_ANDROID)
+#ifndef GLES2
 	if (gl.gl_major >= 3)
 		glBindVertexArray(gl.vbo.vao);
 #endif
@@ -971,7 +971,7 @@ static void SetupMainVBO()
 
 void SetupModvolVBO()
 {
-#if !defined(GLES) || defined(_ANDROID)
+#ifndef GLES2
 	if (gl.gl_major >= 3)
 		glBindVertexArray(gl.vbo.vao);
 #endif

core/rend/gles/gles.cpp

@@ -565,9 +565,7 @@ GLuint fogTextureId;
 				}
 #ifdef GLES
 // EGL only supports runtime loading with android? TDB
-#ifdef _ANDROID
 				load_gles_symbols();
-#endif
 #else
 				egl_makecurrent();
 				if (gl3wInit())
@@ -1205,7 +1203,7 @@ bool gl_create_resources()
 		//create vao
 		//This is really not "proper", vaos are supposed to be defined once
 		//i keep updating the same one to make the es2 code work in 3.1 context
-#if !defined(GLES) || defined(_ANDROID)
+#ifndef GLES2
 		glGenVertexArrays(1, &gl.vbo.vao);
 #endif
 	}
@@ -2006,7 +2004,7 @@ struct glesrend : Renderer
 
 	void DrawOSD(bool clear_screen)
 	{
-#if !defined(GLES) || defined(_ANDROID)
+#ifndef GLES2
 		if (gl.gl_major >= 3)
 			glBindVertexArray(gl.vbo.vao);
 #endif

core/rend/gles/gles.h

@@ -17,7 +17,7 @@
 #endif
 #include <GLES32/gl32.h>
 #include <GLES32/gl2ext.h>
-#ifdef _ANDROID
+#ifndef GLES2
 #include "gl32funcs.h"
 #endif
 

core/rend/gles/imgui_impl_opengl3.cpp

@@ -141,7 +141,7 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data, bool save_backgr
 
     if (save_background)
     {
-#if !defined(GLES) || defined(_ANDROID)
+#ifndef GLES2
     	if (!gl.is_gles && glReadBuffer != NULL)
     		glReadBuffer(GL_FRONT);
 
@@ -190,12 +190,12 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data, bool save_backgr
     glcache.UseProgram(g_ShaderHandle);
     glUniform1i(g_AttribLocationTex, 0);
     glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
-#if !defined(GLES) || defined(_ANDROID)
+#ifndef GLES2
     if (gl.gl_major >= 3 && glBindSampler != NULL)
     	glBindSampler(0, 0); // We use combined texture/sampler state. Applications using GL 3.3 may set that otherwise.
 #endif
     GLuint vao_handle = 0;
-#if !defined(GLES) || defined(_ANDROID)
+#ifndef GLES2
     if (gl.gl_major >= 3)
     {
 		// Recreate the VAO every time
@@ -252,7 +252,7 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data, bool save_backgr
             idx_buffer_offset += pcmd->ElemCount;
         }
     }
-#if !defined(GLES) || defined(_ANDROID)
+#ifndef GLES2
     if (vao_handle != 0)
     	glDeleteVertexArrays(1, &vao_handle);
 #endif

shell/android-studio/reicast/src/main/jni/Android.mk

@@ -76,19 +76,15 @@ ifdef CHD5_FLAC
 endif
 
 ifdef NAOMI
-LOCAL_CFLAGS += -DTARGET_NAOMI=1
-LOCAL_CPPFLAGS += -DTARGET_NAOMI=1
-LOCAL_CXXFLAGS += -DTARGET_NAOMI=1
+    LOCAL_CFLAGS += -DTARGET_NAOMI=1
 endif
 
-# LOCAL_CFLAGS += -std=c++11
+LOCAL_CFLAGS += -DGLES3
 LOCAL_CXXFLAGS += -std=c++11 -fopenmp
 LOCAL_LDFLAGS  += -fopenmp
 
 ifeq ($(TARGET_ARCH_ABI),x86)
   LOCAL_CFLAGS+= -DTARGET_NO_AREC -DTARGET_NO_OPENMP
-  LOCAL_CXXFLAGS+= -DTARGET_NO_AREC -fpermissive -DTARGET_NO_OPENMP
-  LOCAL_CPPFLAGS+= -DTARGET_NO_AREC -DTARGET_NO_OPENMP
 endif
 
 LOCAL_CPP_FEATURES := 

shell/linux/Makefile

@@ -171,8 +171,7 @@ else ifneq (,$(findstring rpi,$(platform)))
         INCS += -I/opt/vc/include/ -I/opt/vc/include/interface/vmcs_host/linux -I/opt/vc/include/interface/vcos/pthreads
         LIBS += -L/opt/vc/lib/ -lbcm_host -ldl
         LIBS += -lbrcmEGL -lbrcmGLESv2
-        CFLAGS += -D TARGET_VIDEOCORE
-        CXXFLAGS += -DGLES
+        CFLAGS += -D TARGET_VIDEOCORE -DGLES
         USE_OMX := 1
         USE_DISPMANX := 1
     endif
@@ -208,7 +207,7 @@ else ifneq (,$(findstring odroid,$(platform)))
     ifneq (,$(findstring odroidxu3,$(platform)))
         MFLAGS += -march=armv7ve -mtune=cortex-a15.cortex-a7
         ASFLAGS += -march=armv7ve
-
+		CFLAGS += -DGLES3
     # Other ODROIDs
     else
         MFLAGS += -march=armv7-a
@@ -382,7 +381,7 @@ endif
 
 # GLES on x11?
 ifdef USE_GLES
-    CXXFLAGS += -DGLES
+    CFLAGS += -DGLES
     LIBS += -lEGL -lGLESv2
 else ifdef FOR_LINUX
     LIBS += -ldl -lGL #for desktop gl