From 4477c41dc4bdd7d231955d379354d29753631561 Mon Sep 17 00:00:00 2001
From: Gregory Wells <me@gregorywells.dev>
Date: Mon, 18 Aug 2025 21:22:22 -0400
Subject: [PATCH] render pass in OpenGL

---
 .../opengl/loader/opengl_commands_loader.c    |  5 +++--
 .../src/commands/commands/opengl_commands.c   | 22 +++++++++++++++++++
 .../src/commands/commands/opengl_commands.h   | 13 +++++++++++
 3 files changed, 38 insertions(+), 2 deletions(-)
 create mode 100644 projects/apis/opengl/src/commands/commands/opengl_commands.c
 create mode 100644 projects/apis/opengl/src/commands/commands/opengl_commands.h

diff --git a/projects/apis/opengl/loader/opengl_commands_loader.c b/projects/apis/opengl/loader/opengl_commands_loader.c
index 2751685..4d486fe 100644
--- a/projects/apis/opengl/loader/opengl_commands_loader.c
+++ b/projects/apis/opengl/loader/opengl_commands_loader.c
@@ -1,5 +1,6 @@
 #include "opengl_loader.h"
 #include "commands/buffers/opengl_command_buffer.h"
+#include "commands/commands/opengl_commands.h"
 
 gnCommandFunctions loadOpenGLCommandFunctions() {
     return (gnCommandFunctions) {
@@ -10,8 +11,8 @@ gnCommandFunctions loadOpenGLCommandFunctions() {
         ._gnEndCommandBuffer = openglEndCommandBuffer,
         ._gnDestroyCommandBuffer = openglDestroyCommandBuffer,
 
-        ._gnCommandBeginRenderPass = NULL,
-        ._gnCommandEndRenderPass = NULL,
+        ._gnCommandBeginRenderPass = openglBeginRenderPass,
+        ._gnCommandEndRenderPass = openglEndRenderPass,
 
         ._gnCommandBindGraphicsPipeline = NULL,
         ._gnCommandSetViewport = NULL,
diff --git a/projects/apis/opengl/src/commands/commands/opengl_commands.c b/projects/apis/opengl/src/commands/commands/opengl_commands.c
new file mode 100644
index 0000000..3315d90
--- /dev/null
+++ b/projects/apis/opengl/src/commands/commands/opengl_commands.c
@@ -0,0 +1,22 @@
+#include "glad/glad.h"
+#include "opengl_commands.h"
+#include "framebuffer/opengl_framebuffer.h"
+
+void openglBeginRenderPass(gnCommandBuffer buffer, gnRenderPassInfo passInfo) {
+    glBindFramebuffer(GL_FRAMEBUFFER, passInfo.framebuffer->framebuffer->framebuffers[0]);
+    glClearColor(passInfo.clearValues[0].r, passInfo.clearValues[0].g, passInfo.clearValues[0].b, passInfo.clearValues[0].a);
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+    glEnable(GL_DEPTH_TEST);
+    glViewport(passInfo.offset.x, passInfo.offset.y, passInfo.size.x, passInfo.size.y);
+}
+void openglEndRenderPass(gnCommandBuffer buffer) {
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+void openglBindGraphicsPipeline(gnCommandBuffer buffer, gnGraphicsPipeline graphicsPipeline);
+void openglSetViewport(gnCommandBuffer buffer, gnViewport viewport);
+void openglSetScissor(gnCommandBuffer buffer, gnScissor scissor);
+void openglBindBuffer(gnCommandBufferHandle buffer, gnBufferHandle bufferToBind, gnBufferType type);
+void openglDraw(gnCommandBuffer buffer, int vertexCount, int firstVertex, int instanceCount, int firstInstance);
+void openglDrawIndexed(gnCommandBufferHandle buffer, gnIndexType type, int indexCount, int firstIndex, int vertexOffset, int instanceCount, int firstInstance);
+void openglBindUniform(gnCommandBufferHandle buffer, gnUniform uniform, uint32_t set, uint32_t dynamicOffsetCount, uint32_t* dynamicOffsets);
+void openglBindVertexBytes(gnCommandBufferHandle buffer, gnPushConstantLayout layout, void* data);
diff --git a/projects/apis/opengl/src/commands/commands/opengl_commands.h b/projects/apis/opengl/src/commands/commands/opengl_commands.h
new file mode 100644
index 0000000..40c9c27
--- /dev/null
+++ b/projects/apis/opengl/src/commands/commands/opengl_commands.h
@@ -0,0 +1,13 @@
+#pragma once
+#include "core/src/command/commands/gryphn_command.h"
+
+void openglBeginRenderPass(gnCommandBuffer buffer, gnRenderPassInfo passInfo);
+void openglEndRenderPass(gnCommandBuffer buffer);
+void openglBindGraphicsPipeline(gnCommandBuffer buffer, gnGraphicsPipeline graphicsPipeline);
+void openglSetViewport(gnCommandBuffer buffer, gnViewport viewport);
+void openglSetScissor(gnCommandBuffer buffer, gnScissor scissor);
+void openglBindBuffer(gnCommandBufferHandle buffer, gnBufferHandle bufferToBind, gnBufferType type);
+void openglDraw(gnCommandBuffer buffer, int vertexCount, int firstVertex, int instanceCount, int firstInstance);
+void openglDrawIndexed(gnCommandBufferHandle buffer, gnIndexType type, int indexCount, int firstIndex, int vertexOffset, int instanceCount, int firstInstance);
+void openglBindUniform(gnCommandBufferHandle buffer, gnUniform uniform, uint32_t set, uint32_t dynamicOffsetCount, uint32_t* dynamicOffsets);
+void openglBindVertexBytes(gnCommandBufferHandle buffer, gnPushConstantLayout layout, void* data);