Create buffers

Kode · Mar 1, 2025 · caa20ad · caa20ad
1 parent 8203cdc
commit caa20ad
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Showing 3 changed files with 36 additions and 7 deletions.
diff --git a/backends/gpu/opengl/includes/kore3/opengl/buffer_structs.h b/backends/gpu/opengl/includes/kore3/opengl/buffer_structs.h
@@ -10,7 +10,8 @@ extern "C" {
 struct kore_gpu_device;
 
 typedef struct kore_opengl_buffer {
-	int nothing;
+	uint32_t buffer;
+	uint32_t buffer_type;
 } kore_opengl_buffer;
 
 #ifdef __cplusplus

diff --git a/backends/gpu/opengl/sources/buffer.c b/backends/gpu/opengl/sources/buffer.c
@@ -4,22 +4,34 @@
 
 void kore_opengl_buffer_set_name(kore_gpu_buffer *buffer, const char *name) {}
 
-void kore_opengl_buffer_destroy(kore_gpu_buffer *buffer) {}
+void kore_opengl_buffer_destroy(kore_gpu_buffer *buffer) {
+	glDeleteBuffers(1, &buffer->opengl.buffer);
+}
 
 void *kore_opengl_buffer_try_to_lock_all(kore_gpu_buffer *buffer) {
-	return NULL;
+	return kore_opengl_buffer_lock_all(buffer);
 }
 
 void *kore_opengl_buffer_lock_all(kore_gpu_buffer *buffer) {
-	return NULL;
+	glBindBuffer(buffer->opengl.buffer_type, buffer->opengl.buffer);
+	void *data = glMapBuffer(buffer->opengl.buffer_type, GL_WRITE_ONLY);
+	glBindBuffer(buffer->opengl.buffer_type, buffer->opengl.buffer);
+	return data;
 }
 
 void *kore_opengl_buffer_try_to_lock(kore_gpu_buffer *buffer, uint64_t offset, uint64_t size) {
 	return NULL;
 }
 
 void *kore_opengl_buffer_lock(kore_gpu_buffer *buffer, uint64_t offset, uint64_t size) {
-	return NULL;
+	glBindBuffer(buffer->opengl.buffer_type, buffer->opengl.buffer);
+	void *data = glMapBufferRange(buffer->opengl.buffer_type, offset, size, GL_WRITE_ONLY);
+	glBindBuffer(buffer->opengl.buffer_type, 0);
+	return data;
 }
 
-void kore_opengl_buffer_unlock(kore_gpu_buffer *buffer) {}
+void kore_opengl_buffer_unlock(kore_gpu_buffer *buffer) {
+	glBindBuffer(buffer->opengl.buffer_type, buffer->opengl.buffer);
+	glUnmapBuffer(buffer->opengl.buffer_type);
+	glBindBuffer(buffer->opengl.buffer_type, 0);
+}
diff --git a/backends/gpu/opengl/sources/device.c b/backends/gpu/opengl/sources/device.c
@@ -88,7 +88,23 @@ void kore_opengl_device_destroy(kore_gpu_device *device) {}
 
 void kore_opengl_device_set_name(kore_gpu_device *device, const char *name) {}
 
-void kore_opengl_device_create_buffer(kore_gpu_device *device, const kore_gpu_buffer_parameters *parameters, kore_gpu_buffer *buffer) {}
+void kore_opengl_device_create_buffer(kore_gpu_device *device, const kore_gpu_buffer_parameters *parameters, kore_gpu_buffer *buffer) {
+	glGenBuffers(1, &buffer->opengl.buffer);
+	if ((parameters->usage_flags & KORE_GPU_BUFFER_USAGE_VERTEX) != 0) {
+		buffer->opengl.buffer_type = GL_ARRAY_BUFFER;
+	}
+	else if ((parameters->usage_flags & KORE_GPU_BUFFER_USAGE_INDEX) != 0) {
+		buffer->opengl.buffer_type = GL_ELEMENT_ARRAY_BUFFER;
+	}
+	else {
+		assert(false);
+	}
+
+	glBindBuffer(buffer->opengl.buffer_type, buffer->opengl.buffer);
+	kore_opengl_check_errors();
+	glBufferData(buffer->opengl.buffer_type, parameters->size, NULL, GL_DYNAMIC_DRAW);
+	glBindBuffer(buffer->opengl.buffer_type, 0);
+}
 
 void kore_opengl_device_create_command_list(kore_gpu_device *device, kore_gpu_command_list_type type, kore_gpu_command_list *list) {}