Common: Move GL classes to subdirectory

src/common/gl/texture.cpp

@@ -0,0 +1,52 @@
+#include "texture.h"
+#include "YBaseLib/Assert.h"
+#include "YBaseLib/Log.h"
+Log_SetChannel(GL);
+
+namespace GL {
+
+Texture::Texture(u32 width, u32 height, GLenum format, GLenum type, const void* data /* = nullptr */,
+                 bool linear_filter /* = false */, bool create_framebuffer /* = false */)
+  : m_width(width), m_height(height)
+{
+  glGenTextures(1, &m_id);
+  glBindTexture(GL_TEXTURE_2D, m_id);
+  glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, type, data);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, linear_filter ? GL_LINEAR : GL_NEAREST);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, linear_filter ? GL_LINEAR : GL_NEAREST);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 1);
+
+  if (create_framebuffer)
+  {
+    glGenFramebuffers(1, &m_fbo_id);
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbo_id);
+    glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_id, 0);
+    Assert(glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE);
+  }
+}
+
+Texture::~Texture()
+{
+  if (m_fbo_id != 0)
+    glDeleteFramebuffers(1, &m_fbo_id);
+
+  glDeleteTextures(1, &m_id);
+}
+
+void Texture::Bind()
+{
+  glBindTexture(GL_TEXTURE_2D, m_id);
+}
+
+void Texture::BindFramebuffer(GLenum target /*= GL_DRAW_FRAMEBUFFER*/)
+{
+  DebugAssert(m_fbo_id != 0);
+  glBindFramebuffer(target, m_fbo_id);
+}
+
+void Texture::Unbind()
+{
+  glBindTexture(GL_TEXTURE_2D, 0);
+}
+
+} // namespace GL