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gpu: implement RenderPassColorAttachment

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2022-03-11 22:03:22 -07:00 • committed by Stephen Gutekanst
parent 510c7de9f2
commit f5a5c7eaa7
3 changed files with 61 additions and 20 deletions
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73
gpu/src/NativeInstance.zig
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@ -998,25 +998,66 @@ const command_encoder_vtable = CommandEncoder.VTable{
}).setLabel,
.beginRenderPass = (struct {
pub fn beginRenderPass(ptr: *anyopaque, d: *const RenderPassEncoder.Descriptor) RenderPassEncoder {
var few_color_attachments: [8]c.WGPURenderPassColorAttachment = undefined;
const color_attachments = if (d.color_attachments.len <= 8) blk: {
for (d.color_attachments) |v, i| {
few_color_attachments[i] = c.WGPURenderPassColorAttachment{
.view = @ptrCast(c.WGPUTextureView, v.view.ptr),
.resolveTarget = if (v.resolve_target) |t| @ptrCast(c.WGPUTextureView, t.ptr) else null,
.loadOp = @enumToInt(v.load_op),
.storeOp = @enumToInt(v.load_op),
.clearValue = @bitCast(c.WGPUColor, v.clear_value),
// deprecated:
.clearColor = c.WGPUColor{
.r = std.math.nan(f32),
.g = std.math.nan(f32),
.b = std.math.nan(f32),
.a = std.math.nan(f32),
},
};
}
break :blk few_color_attachments[0..d.color_attachments.len];
} else blk: {
const mem = std.heap.page_allocator.alloc(c.WGPURenderPassColorAttachment, d.color_attachments.len) catch unreachable;
for (d.color_attachments) |v, i| {
mem[i] = c.WGPURenderPassColorAttachment{
.view = @ptrCast(c.WGPUTextureView, v.view.ptr),
.resolveTarget = if (v.resolve_target) |t| @ptrCast(c.WGPUTextureView, t.ptr) else null,
.loadOp = @enumToInt(v.load_op),
.storeOp = @enumToInt(v.load_op),
.clearValue = @bitCast(c.WGPUColor, v.clear_value),
// deprecated:
.clearColor = c.WGPUColor{
.r = std.math.nan(f32),
.g = std.math.nan(f32),
.b = std.math.nan(f32),
.a = std.math.nan(f32),
},
};
}
break :blk mem;
};
defer if (d.color_attachments.len > 8) std.heap.page_allocator.free(color_attachments);
const desc = c.WGPURenderPassDescriptor{
.nextInChain = null,
.label = if (d.label) |l| l else null,
.colorAttachmentCount = 0, // TODO
.colorAttachments = null, // TODO
.depthStencilAttachment = &c.WGPURenderPassDepthStencilAttachment{
.view = @ptrCast(c.WGPUTextureView, d.depth_stencil_attachment.view.ptr),
.depthLoadOp = @enumToInt(d.depth_stencil_attachment.depth_load_op),
.depthStoreOp = @enumToInt(d.depth_stencil_attachment.depth_store_op),
.clearDepth = d.depth_stencil_attachment.clear_depth,
.depthClearValue = d.depth_stencil_attachment.depth_clear_value,
.depthReadOnly = d.depth_stencil_attachment.depth_read_only,
.stencilLoadOp = @enumToInt(d.depth_stencil_attachment.stencil_load_op),
.stencilStoreOp = @enumToInt(d.depth_stencil_attachment.stencil_store_op),
.clearStencil = d.depth_stencil_attachment.clear_stencil,
.stencilClearValue = d.depth_stencil_attachment.stencil_clear_value,
.stencilReadOnly = d.depth_stencil_attachment.stencil_read_only,
},
.occlusionQuerySet = @ptrCast(c.WGPUQuerySet, d.occlusion_query_set.ptr),
.colorAttachmentCount = @intCast(u32, color_attachments.len),
.colorAttachments = &color_attachments[0],
.depthStencilAttachment = if (d.depth_stencil_attachment) |v| &c.WGPURenderPassDepthStencilAttachment{
.view = @ptrCast(c.WGPUTextureView, v.view.ptr),
.depthLoadOp = @enumToInt(v.depth_load_op),
.depthStoreOp = @enumToInt(v.depth_store_op),
.clearDepth = v.clear_depth,
.depthClearValue = v.depth_clear_value,
.depthReadOnly = v.depth_read_only,
.stencilLoadOp = @enumToInt(v.stencil_load_op),
.stencilStoreOp = @enumToInt(v.stencil_store_op),
.clearStencil = v.clear_stencil,
.stencilClearValue = v.stencil_clear_value,
.stencilReadOnly = v.stencil_read_only,
} else null,
.occlusionQuerySet = if (d.occlusion_query_set) |v| @ptrCast(c.WGPUQuerySet, v.ptr) else null,
.timestampWriteCount = 0, // TODO
.timestampWrites = null, // TODO
};