gryphn map buffers

src/core/buffers/gryphn_buffer.c

@@ -5,11 +5,21 @@
 gnReturnCode gnCreateBuffer(gnBufferHandle* buffer, gnOutputDeviceHandle device, gnBufferInfo info) {
     *buffer = malloc(sizeof(struct gnBuffer_t));
     (*buffer)->device = device;
+    (*buffer)->info = info;
     return device->deviceFunctions->_gnCreateBuffer(*buffer, device, info);
 }
 void gnBufferData(gnBufferHandle buffer, size_t dataSize, void* data) {
     buffer->device->deviceFunctions->_gnBufferData(buffer, dataSize, data);
 }
+void* gnMapBuffer(gnBufferHandle buffer) {
+    if (buffer->info.type == GN_STATIC_DRAW) {
+        gnDebuggerSetErrorMessage(buffer->device->instance->debugger, (gnMessageData){
+           .message = gnCreateString("Cannot map static draw buffers")
+        });
+        return NULL;
+    }
+    return buffer->device->deviceFunctions->_gnMapBuffer(buffer);
+}
 void gnDestroyBuffer(gnBufferHandle buffer) {
     buffer->device->deviceFunctions->_gnDestroyBuffer(buffer);
 }

src/core/buffers/gryphn_buffer.h

@@ -26,9 +26,11 @@ typedef struct gnBufferInfo {
 struct gnBuffer_t {
     struct gnPlatformBuffer_t* buffer;
     gnDeviceHandle device;
+    gnBufferInfo info;
 };
 #endif
 
 gnReturnCode gnCreateBuffer(gnBufferHandle* buffer, gnOutputDeviceHandle device, gnBufferInfo info);
 void gnBufferData(gnBufferHandle buffer, size_t dataSize, void* data);
+void* gnMapBuffer(gnBufferHandle buffer);
 void gnDestroyBuffer(gnBufferHandle buffer);

src/core/gryphn_platform_functions.h

@@ -84,6 +84,7 @@ typedef struct gnDeviceFunctions_t {
 
     gnReturnCode (*_gnCreateBuffer)(gnBufferHandle buffer, gnDeviceHandle device, gnBufferInfo info);
     void (*_gnBufferData)(gnBufferHandle buffer, size_t size, void* data);
+    void* (*_gnMapBuffer)(gnBufferHandle buffer);
     void (*_gnDestroyBuffer)(gnBufferHandle buffer);
 
     gnReturnCode (*_gnCreateFence)(gnFenceHandle fence, gnOutputDeviceHandle device);

src/core/instance/init/gryphn_init.c

@@ -86,6 +86,7 @@ void gnLoadDeviceFunctions(struct gnDynamicLibrary_t* lib, struct gnDeviceFuncti
     gnLoadDLLFunction(lib, functions->_gnDestroySemaphore, "gnDestroySemaphoreFn");
     gnLoadDLLFunction(lib, functions->_gnCreateBuffer, "gnCreateBufferFn");
     gnLoadDLLFunction(lib, functions->_gnBufferData, "gnBufferDataFn");
+    gnLoadDLLFunction(lib, functions->_gnMapBuffer, "gnMapBufferFn");
     gnLoadDLLFunction(lib, functions->_gnDestroyBuffer, "gnDestroyBufferFn");
     gnLoadDLLFunction(lib, functions->_gnCreateFence, "gnCreateFenceFn");
     gnLoadDLLFunction(lib, functions->_gnSignalFence, "gnSignalFenceFn");