From cbfe3801bbcb2818b28b0c84e2bf6f25b123c46b Mon Sep 17 00:00:00 2001
From: rtk0c <mail.tianyig@gmail.com>
Date: Thu, 24 Apr 2025 13:14:10 -0700
Subject: Make the texture render

---
 src/ogl.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/ogl.cpp')

diff --git a/src/ogl.cpp b/src/ogl.cpp
index a7b2dfa..19e49cc 100644
--- a/src/ogl.cpp
+++ b/src/ogl.cpp
@@ -2,8 +2,16 @@
 
 #include <imgui_impl_opengl3_loader.h>
 
+// These constants are omitted from the ImGui loader
+#define GL_NEAREST 0x2600
+
 OglImage::OglImage() {
     glGenTextures(1, &glHandle);
+    glBindTexture(GL_TEXTURE_2D, glHandle);
+
+    // Setup filtering parameters for display
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 }
 
 OglImage::~OglImage() {
@@ -14,3 +22,7 @@ void OglImage::upload(const char* data, int w, int h) {
     glBindTexture(GL_TEXTURE_2D, glHandle);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
 }
+
+ImTextureID OglImage::as_imgui() const {
+    return static_cast<ImTextureID>(reinterpret_cast<uint32_t>(glHandle));
+}
-- 
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