Add debug output for opengl

1 files changed, 13 insertions, 0 deletions

diff --git a/src/RenderBackend/OpenGL/Texture2D.cpp b/src/RenderBackend/OpenGL/Texture2D.cpp
index f4326a8..7d1b83c 100644
--- a/src/RenderBackend/OpenGL/Texture2D.cpp
+++ b/src/RenderBackend/OpenGL/Texture2D.cpp
@@ -43,6 +43,13 @@ namespace amalgine {
 
     }
 
+    static void output_gl_error(const char *description) {
+        GLenum error = glGetError();
+        if(error != GL_NO_ERROR) {
+            fprintf(stderr, "Error: failed to %s, reason: %s (%u)\n", description, glewGetErrorString(error), error);
+        }
+    }
+
     Texture2D::Texture2D(Image *image)
     {
         assert(image);
@@ -52,10 +59,16 @@ namespace amalgine {
         texture_id = texture_id_allocator->get_free_texture_id();
         printf("texture id: %d\n", texture_id);
         texture_ref = -1;
+        //output_gl_error("start");
         glGenTextures(1, &texture_ref);
+        //output_gl_error("gen textures");
         glActiveTexture(GL_TEXTURE0 + texture_id);
+        //output_gl_error("set active texture");
         glBindTexture(GL_TEXTURE_2D, texture_ref);
+        //output_gl_error("bind texture");
+
         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, image->getWidth(), image->getHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, image->getData());
+        //output_gl_error("set texture");
         
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);