From 8c644dd120c63244f4b576b45cd4ae96842736f8 Mon Sep 17 00:00:00 2001
From: quou <quou@disroot.org>
Date: Sun, 9 Feb 2025 18:49:00 +1100
Subject: support for structured buffers

---
 video.hpp | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

(limited to 'video.hpp')

diff --git a/video.hpp b/video.hpp
index c93093e..ccc1f11 100644
--- a/video.hpp
+++ b/video.hpp
@@ -52,7 +52,8 @@ struct Sampler_Id : public Primitive_Id<uint32_t> {
 struct Descriptor {
 	enum class Type {
 		texture,
-		constant_buffer
+		constant_buffer,
+		structured_buffer
 	} type;
 	int slot;
 	uint8_t payload[descriptor_payload_size];
@@ -63,13 +64,13 @@ struct Texture_Descriptor {
 	Sampler_Id sampler;
 };
 
-struct Constant_Buffer_Descriptor {
+struct Buffer_Descriptor {
 	int offset, size;
 	Buffer_Id buffer;
 };
 
 static_assert(sizeof(Texture_Descriptor) <= descriptor_payload_size);
-static_assert(sizeof(Constant_Buffer_Descriptor) <= descriptor_payload_size);
+static_assert(sizeof(Buffer_Descriptor) <= descriptor_payload_size);
 
 #define pipeline_max_descriptors 16
 
@@ -195,11 +196,12 @@ struct Pipeline {
 					if (ta->texture != tb->texture) return false;
 					if (ta->sampler != tb->sampler) return false;
 				} break;
-				case Descriptor::Type::constant_buffer: {
-					Constant_Buffer_Descriptor* ca =
-						(Constant_Buffer_Descriptor*)a.payload;
-					Constant_Buffer_Descriptor* cb =
-						(Constant_Buffer_Descriptor*)b.payload;
+				case Descriptor::Type::constant_buffer:
+				case Descriptor::Type::structured_buffer: {
+					Buffer_Descriptor* ca =
+						(Buffer_Descriptor*)a.payload;
+					Buffer_Descriptor* cb =
+						(Buffer_Descriptor*)b.payload;
 					if (ca->buffer != cb->buffer) return false;
 					if (ca->size != cb->size) return false;
 					if (ca->offset != cb->offset) return false;
@@ -328,6 +330,12 @@ struct Pipeline_Builder {
 		int offset = 0,
 		int size = 0
 	);
+	void sbuffer(
+		int binding,
+		Buffer_Id id,
+		int offset = 0,
+		int size = 0
+	);
 	Pipeline& build();
 	void validate();
 };
-- 
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