From 7d8c72feb8041a6757a9dacb4e9d8017a689bec4 Mon Sep 17 00:00:00 2001
From: quou <quou@disroot.org>
Date: Sat, 28 Dec 2024 19:03:56 +1100
Subject: replace memset

---
 pipeline.cpp  |  2 +-
 qstd/memory.c |  6 ++++++
 qstd/memory.h |  2 ++
 video.cpp     | 28 ++++++++++++++--------------
 4 files changed, 23 insertions(+), 15 deletions(-)

diff --git a/pipeline.cpp b/pipeline.cpp
index b0a88eb..88b2009 100644
--- a/pipeline.cpp
+++ b/pipeline.cpp
@@ -40,7 +40,7 @@ Render_Pass& Pipeline_Builder::build_rp() {
 
 void Pipeline_Builder::begin(Device* dev) {
 	pip = (Pipeline*)arena_alloc(arena, sizeof *pip);
-	memset(pip, 0, sizeof *pip);
+	zero(pip, sizeof *pip);
 	if (dev) {
 		Texture_Id backbuffer_id = dev->get_backbuffer();
 		Texture& backbuffer = dev->get_texture(backbuffer_id);
diff --git a/qstd/memory.c b/qstd/memory.c
index 81795d6..b12ec75 100644
--- a/qstd/memory.c
+++ b/qstd/memory.c
@@ -11,6 +11,12 @@ int align_size(int s, int a) {
 	return (s + (a - 1)) & -a;
 }
 
+void zero(void* buf, int size) {
+	int i;
+	for (i = 0; i < size; i++)
+		((uint8_t*)buf)[i] = 0;
+}
+
 static uintptr_t align_address(
 	uintptr_t ad,
 	size_t al
diff --git a/qstd/memory.h b/qstd/memory.h
index 842cb49..c723131 100644
--- a/qstd/memory.h
+++ b/qstd/memory.h
@@ -4,6 +4,8 @@
 int aligned(const void* p, int a);
 int align_size(int s, int a);
 
+void zero(void* buf, int size);
+
 typedef struct Arena {
 	char* buf;
 	int size, ptr;
diff --git a/video.cpp b/video.cpp
index 10680d8..f20fdb8 100644
--- a/video.cpp
+++ b/video.cpp
@@ -2150,7 +2150,7 @@ void Pipeline_Vk::init_stages(
 			&scope,
 			sizeof *sis * count
 		);
-	memset(sis, 0, sizeof *sis * count);
+	zero(sis, sizeof *sis * count);
 	for (i = 0, count = 0; i < shader_type_count; i++) {
 		if (shader.modules[i]) {
 			auto& si = sis[i];
@@ -2178,7 +2178,7 @@ void Pipeline_Vk::init_vertex_input(
 			&scope,
 			sizeof vi
 		);
-	memset(&vi, 0, sizeof vi);
+	zero(&vi, sizeof vi);
 	vi.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
 	vi.vertexBindingDescriptionCount = vf.binding_count;
 	vi.pVertexBindingDescriptions = vf.bindings;
@@ -2201,7 +2201,7 @@ void Pipeline_Vk::init_input_assembly(
 	(void)dev;
 	(void)desc;
 	(void)info;
-	memset(&ia, 0, sizeof ia);
+	zero(&ia, sizeof ia);
 	ia.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
 	ia.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
 	info.pInputAssemblyState = &ia;
@@ -2226,9 +2226,9 @@ void Pipeline_Vk::init_viewport(
 		&scope,
 		sizeof viewport
 	);
-	memset(&vi, 0, sizeof vi);
-	memset(&scissor, 0, sizeof scissor);
-	memset(&viewport, 0, sizeof viewport);
+	zero(&vi, sizeof vi);
+	zero(&scissor, sizeof scissor);
+	zero(&viewport, sizeof viewport);
 	scissor.offset.x = desc.scissor[0];
 	scissor.offset.y = desc.scissor[1];
 	scissor.extent.width  = desc.scissor[2];
@@ -2260,7 +2260,7 @@ void Pipeline_Vk::init_rasterisation(
 		);
 	(void)dev;
 	(void)desc;
-	memset(&ri, 0, sizeof ri);
+	zero(&ri, sizeof ri);
 	ri.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
 	ri.depthClampEnable = VK_FALSE;
 	ri.rasterizerDiscardEnable = VK_FALSE;
@@ -2285,7 +2285,7 @@ void Pipeline_Vk::init_msaa(
 		);
 	(void)dev;
 	(void)desc;
-	memset(&mi, 0, sizeof mi);
+	zero(&mi, sizeof mi);
 	mi.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
 	mi.sampleShadingEnable = VK_FALSE;
 	mi.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
@@ -2305,7 +2305,7 @@ void Pipeline_Vk::init_depthstencil(
 		);
 	(void)dev;
 	(void)desc;
-	memset(&ds, 0, sizeof ds);
+	zero(&ds, sizeof ds);
 	ds.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
 	ds.depthTestEnable = VK_FALSE;
 	ds.depthWriteEnable = VK_FALSE;
@@ -2333,8 +2333,8 @@ void Pipeline_Vk::init_blending(
 		);
 	(void)dev;
 	(void)desc;
-	memset(&bi, 0, sizeof bi);
-	memset(&abs, 0, sizeof abs);
+	zero(&bi, sizeof bi);
+	zero(&abs, sizeof abs);
 	abs.colorWriteMask = 
 		VK_COLOR_COMPONENT_R_BIT |
 		VK_COLOR_COMPONENT_G_BIT |
@@ -2365,7 +2365,7 @@ void Pipeline_Vk::init_descriptors(
 				count * sizeof *descs
 			);
 		VkDescriptorSetLayoutCreateInfo di{};
-		memset(descs, 0, count * sizeof *descs);
+		zero(descs, count * sizeof *descs);
 		for (i = 0; i < count; i++) {
 			int j, stage;
 			auto& dst = descs[i];
@@ -2612,8 +2612,8 @@ void Vertex_Format_Vk::init(
 		dev->heap,
 		attr_count * sizeof *attrs
 	);
-	memset(bindings, 0, binding_count * sizeof *bindings);
-	memset(attrs, 0, attr_count * sizeof *attrs);
+	zero(bindings, binding_count * sizeof *bindings);
+	zero(attrs, attr_count * sizeof *attrs);
 	for (i = 0; i < binding_count; i++) {
 		auto& dst = bindings[i];
 		const auto& src = desc.bindings[i];
-- 
cgit v1.2.3-54-g00ecf