From 026fc52d7cb6a27f47df594c1cffca0a7e3c6728 Mon Sep 17 00:00:00 2001
From: Gregory Wells <me@gregorywells.dev>
Date: Sun, 17 Aug 2025 23:15:14 -0400
Subject: [PATCH] uniform API in OpenGL

---
 .../apis/opengl/loader/opengl_device_loader.c |  7 ++++---
 .../src/uniforms/pool/opengl_uniform_pool.c   |  5 ++++-
 .../src/uniforms/uniform/opengl_uniform.c     | 14 +++++++++++++
 .../src/uniforms/uniform/opengl_uniform.h     | 20 +++++++++++++++++++
 4 files changed, 42 insertions(+), 4 deletions(-)
 create mode 100644 projects/apis/opengl/src/uniforms/uniform/opengl_uniform.c
 create mode 100644 projects/apis/opengl/src/uniforms/uniform/opengl_uniform.h

diff --git a/projects/apis/opengl/loader/opengl_device_loader.c b/projects/apis/opengl/loader/opengl_device_loader.c
index b05b767..9e2b0bd 100644
--- a/projects/apis/opengl/loader/opengl_device_loader.c
+++ b/projects/apis/opengl/loader/opengl_device_loader.c
@@ -4,6 +4,7 @@
 #include "shaders/opengl_shader_module.h"
 #include "renderpass/opengl_render_pass_descriptor.h"
 #include "uniforms/pool/opengl_uniform_pool.h"
+#include "uniforms/uniform/opengl_uniform.h"
 #include "commands/pool/opengl_command_pool.h"
 #include "buffer/opengl_buffer.h"
 
@@ -39,9 +40,9 @@ gnDeviceFunctions loadOpenGLDeviceFunctions() {
         ._gnUniformPoolAllocateUniforms = openglAllocateUniforms,
         ._gnDestroyUniformPool = openglDestroyUniformPool,
 
-        ._gnUpdateBufferUniform = NULL,
-        ._gnUpdateStorageUniform = NULL,
-        ._gnUpdateImageUniform = NULL,
+        ._gnUpdateBufferUniform = openglUpdateBufferUniform,
+        ._gnUpdateStorageUniform = openglUpdateStorageUniform,
+        ._gnUpdateImageUniform = openglUpdateImageUniform,
 
         ._gnCreateTexture = NULL,
         ._gnTextureData = NULL,
diff --git a/projects/apis/opengl/src/uniforms/pool/opengl_uniform_pool.c b/projects/apis/opengl/src/uniforms/pool/opengl_uniform_pool.c
index 3a28de5..052fed2 100644
--- a/projects/apis/opengl/src/uniforms/pool/opengl_uniform_pool.c
+++ b/projects/apis/opengl/src/uniforms/pool/opengl_uniform_pool.c
@@ -1,12 +1,15 @@
 #include "opengl_uniform_pool.h"
+#include "uniforms/uniform/opengl_uniform.h"
 
 gnReturnCode openglCreateUniformPool(gnUniformPool pool, gnDeviceHandle device) {
     return GN_SUCCESS;
 }
 gnUniform* openglAllocateUniforms(gnUniformPool pool, const gnUniformAllocationInfo allocInfo) {
     gnUniform* uniforms = malloc(sizeof(gnUniform) * allocInfo.setCount);
-    for (int i = 0; i < allocInfo.setCount; i++)
+    for (int i = 0; i < allocInfo.setCount; i++) {
         uniforms[i] = malloc(sizeof(struct gnUniform_t));
+        uniforms[i]->uniform = malloc(sizeof(struct gnPlatformUniform_t));
+    }
     return uniforms;
 }
 void openglDestroyUniformPool(gnUniformPool pool) {
diff --git a/projects/apis/opengl/src/uniforms/uniform/opengl_uniform.c b/projects/apis/opengl/src/uniforms/uniform/opengl_uniform.c
new file mode 100644
index 0000000..69cc670
--- /dev/null
+++ b/projects/apis/opengl/src/uniforms/uniform/opengl_uniform.c
@@ -0,0 +1,14 @@
+#include "opengl_uniform.h"
+
+void openglUpdateBufferUniform(gnUniform uniform, gnBufferUniformInfo* info) {
+    uniform->uniform->type = gl_buffer;
+    uniform->uniform->buffer_info = *info;
+}
+void openglUpdateStorageUniform(gnUniform uniform, gnStorageUniformInfo* info) {
+    uniform->uniform->type = gl_storage;
+    uniform->uniform->storage_info = *info;
+}
+void openglUpdateImageUniform(gnUniform uniform, gnImageUniformInfo* info) {
+    uniform->uniform->type = gl_image;
+    uniform->uniform->image_info = *info;
+}
diff --git a/projects/apis/opengl/src/uniforms/uniform/opengl_uniform.h b/projects/apis/opengl/src/uniforms/uniform/opengl_uniform.h
new file mode 100644
index 0000000..cd61a40
--- /dev/null
+++ b/projects/apis/opengl/src/uniforms/uniform/opengl_uniform.h
@@ -0,0 +1,20 @@
+#pragma once
+#include "glad/glad.h"
+#include "core/src/uniforms/gryphn_uniform.h"
+
+typedef enum openglUniformType {
+    gl_buffer, gl_storage, gl_image
+} openglUniformType;
+
+typedef struct gnPlatformUniform_t {
+    openglUniformType type;
+    union {
+        gnBufferUniformInfo buffer_info;
+        gnStorageUniformInfo storage_info;
+        gnImageUniformInfo image_info;
+    };
+} gnPlatformUniform;
+
+void openglUpdateBufferUniform(gnUniform uniform, gnBufferUniformInfo* info);
+void openglUpdateStorageUniform(gnUniform uniform, gnStorageUniformInfo* info);
+void openglUpdateImageUniform(gnUniform uniform, gnImageUniformInfo* info);