From 660a0334ddeefe360c9f07c2f1da3e85eca66c2b Mon Sep 17 00:00:00 2001
From: Stephen Gutekanst <stephen@hexops.com>
Date: Tue, 15 Mar 2022 21:40:32 -0700
Subject: [PATCH] gpu: implement RenderPassEncoder.drawIndexed

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
---
 gpu/src/NativeInstance.zig    | 19 +++++++++++++++++++
 gpu/src/RenderPassEncoder.zig | 20 +++++++++++++++++++-
 2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/gpu/src/NativeInstance.zig b/gpu/src/NativeInstance.zig
index d4075540..a8f26ec6 100644
--- a/gpu/src/NativeInstance.zig
+++ b/gpu/src/NativeInstance.zig
@@ -903,6 +903,25 @@ const render_pass_encoder_vtable = RenderPassEncoder.VTable{
             c.wgpuRenderPassEncoderDraw(@ptrCast(c.WGPURenderPassEncoder, ptr), vertex_count, instance_count, first_vertex, first_instance);
         }
     }).draw,
+    .drawIndexed = (struct {
+        pub fn drawIndexed(
+            ptr: *anyopaque,
+            index_count: u32,
+            instance_count: u32,
+            first_index: u32,
+            base_vertex: i32,
+            first_instance: u32,
+        ) void {
+            c.wgpuRenderPassEncoderDrawIndexed(
+                @ptrCast(c.WGPURenderPassEncoder, ptr),
+                index_count,
+                instance_count,
+                first_index,
+                base_vertex,
+                first_instance,
+            );
+        }
+    }).drawIndexed,
     .beginOcclusionQuery = (struct {
         pub fn beginOcclusionQuery(ptr: *anyopaque, query_index: u32) void {
             c.wgpuRenderPassEncoderBeginOcclusionQuery(@ptrCast(c.WGPURenderPassEncoder, ptr), query_index);
diff --git a/gpu/src/RenderPassEncoder.zig b/gpu/src/RenderPassEncoder.zig
index e6dca743..0478ed5b 100644
--- a/gpu/src/RenderPassEncoder.zig
+++ b/gpu/src/RenderPassEncoder.zig
@@ -16,7 +16,14 @@ pub const VTable = struct {
     release: fn (ptr: *anyopaque) void,
     beginOcclusionQuery: fn (ptr: *anyopaque, query_index: u32) void,
     draw: fn (ptr: *anyopaque, vertex_count: u32, instance_count: u32, first_vertex: u32, first_instance: u32) void,
-    // WGPU_EXPORT void wgpuRenderPassEncoderDrawIndexed(WGPURenderPassEncoder renderPassEncoder, uint32_t indexCount, uint32_t instanceCount, uint32_t firstIndex, int32_t baseVertex, uint32_t firstInstance);
+    drawIndexed: fn (
+        ptr: *anyopaque,
+        index_count: u32,
+        instance_count: u32,
+        first_index: u32,
+        base_vertex: i32,
+        first_instance: u32,
+    ) void,
     // WGPU_EXPORT void wgpuRenderPassEncoderDrawIndexedIndirect(WGPURenderPassEncoder renderPassEncoder, WGPUBuffer indirectBuffer, uint64_t indirectOffset);
     // WGPU_EXPORT void wgpuRenderPassEncoderDrawIndirect(WGPURenderPassEncoder renderPassEncoder, WGPUBuffer indirectBuffer, uint64_t indirectOffset);
     end: fn (ptr: *anyopaque) void,
@@ -57,6 +64,17 @@ pub inline fn draw(
     pass.vtable.draw(pass.ptr, vertex_count, instance_count, first_vertex, first_instance);
 }
 
+pub inline fn drawIndexed(
+    pass: RenderPassEncoder,
+    index_count: u32,
+    instance_count: u32,
+    first_index: u32,
+    base_vertex: i32,
+    first_instance: u32,
+) void {
+    pass.vtable.drawIndexed(pass.ptr, index_count, instance_count, first_index, base_vertex, first_instance);
+}
+
 pub inline fn beginOcclusionQuery(pass: RenderPassEncoder, query_index: u32) void {
     pass.vtable.beginOcclusionQuery(pass.ptr, query_index);
 }