Tweaks to support OpenGL ES 2.0 desktop

1 files changed, 19 insertions, 12 deletions

diff --git a/src/core.c b/src/core.c
index 79404abe..1b975214 100644
--- a/src/core.c
+++ b/src/core.c
@@ -2247,11 +2247,11 @@ static bool InitGraphicsDevice(int width, int height)
     //glfwWindowHint(GLFW_AUX_BUFFERS, 0);          // Number of auxiliar buffers
 
     // Check some Window creation flags
-    if (configFlags & FLAG_WINDOW_RESIZABLE) glfwWindowHint(GLFW_RESIZABLE, GL_TRUE);       // Resizable window
-    else glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);  // Avoid window being resizable
+    if (configFlags & FLAG_WINDOW_RESIZABLE) glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE);       // Resizable window
+    else glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);  // Avoid window being resizable
 
-    if (configFlags & FLAG_WINDOW_UNDECORATED) glfwWindowHint(GLFW_DECORATED, GL_FALSE);    // Border and buttons on Window
-    else glfwWindowHint(GLFW_DECORATED, GL_TRUE);   // Decorated window
+    if (configFlags & FLAG_WINDOW_UNDECORATED) glfwWindowHint(GLFW_DECORATED, GLFW_FALSE);    // Border and buttons on Window
+    else glfwWindowHint(GLFW_DECORATED, GLFW_TRUE);   // Decorated window
     // FLAG_WINDOW_TRANSPARENT not supported on HTML5 and not included in any released GLFW version yet
 #if defined(GLFW_TRANSPARENT_FRAMEBUFFER)
     if (configFlags & FLAG_WINDOW_TRANSPARENT) glfwWindowHint(GLFW_TRANSPARENT_FRAMEBUFFER, GLFW_TRUE);     // Transparent framebuffer
@@ -2267,21 +2267,28 @@ static bool InitGraphicsDevice(int width, int height)
     // Check selection OpenGL version
     if (rlGetVersion() == OPENGL_21)
     {
-        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);        // Choose OpenGL major version (just hint)
-        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 1);        // Choose OpenGL minor version (just hint)
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);          // Choose OpenGL major version (just hint)
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 1);          // Choose OpenGL minor version (just hint)
     }
     else if (rlGetVersion() == OPENGL_33)
     {
-        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);        // Choose OpenGL major version (just hint)
-        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);        // Choose OpenGL minor version (just hint)
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);          // Choose OpenGL major version (just hint)
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);          // Choose OpenGL minor version (just hint)
         glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); // Profiles Hint: Only 3.3 and above!
                                                                        // Values: GLFW_OPENGL_CORE_PROFILE, GLFW_OPENGL_ANY_PROFILE, GLFW_OPENGL_COMPAT_PROFILE
 #if defined(__APPLE__)
-        glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);  // OSX Requires fordward compatibility
+        glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GLFW_TRUE);  // OSX Requires fordward compatibility
 #else
-        glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_FALSE); // Fordward Compatibility Hint: Only 3.3 and above!
+        glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GLFW_FALSE); // Fordward Compatibility Hint: Only 3.3 and above!
 #endif
-        //glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GL_TRUE); // Request OpenGL DEBUG context
+        //glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GLFW_TRUE); // Request OpenGL DEBUG context
+    }
+    else if (rlGetVersion() == OPENGL_ES_20)                    // Request OpenGL ES 2.0 context
+    {
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
+        glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
+        glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_NATIVE_CONTEXT_API);     // Alternative: GLFW_EGL_CONTEXT_API (ANGLE)
     }
 
     if (fullscreen)
@@ -3145,7 +3152,7 @@ static void KeyCallback(GLFWwindow *window, int key, int scancode, int action, i
 {
     if (key == exitKey && action == GLFW_PRESS)
     {
-        glfwSetWindowShouldClose(window, GL_TRUE);
+        glfwSetWindowShouldClose(window, GLFW_TRUE);
 
         // NOTE: Before closing window, while loop must be left!
     }