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Graphics context for example

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This commit is contained in:
Robin Voetter
2020-07-02 04:01:59 +02:00
parent 260a7966ee
commit 1ebed09413
5 changed files with 385 additions and 11 deletions
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48
generator/render.zig
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@@ -40,8 +40,8 @@ const preamble =
\\ pub fn subtract(lhs: FlagsType, rhs: FlagsType) FlagsType {
\\ return fromInt(toInt(lhs) & toInt(rhs.complement()));
\\ }
\\ pub fn contains(lhs: FlagsType, rhs: FlagsType) FlagsType {
\\ return toInt(merge(lhs, rhs)) == toInt(rhs);
\\ pub fn contains(lhs: FlagsType, rhs: FlagsType) bool {
\\ return toInt(intersect(lhs, rhs)) == toInt(rhs);
\\ }
\\ };
\\}
@@ -409,9 +409,9 @@ fn Renderer(comptime WriterType: type) type {
try self.writeIdentifier(name[2..]);
return;
} else if (mem.startsWith(u8, name, "PFN_vk")) {
// Function pointer type, strip off the PFN_vk part. Note that this function
// is only called to render the typedeffed function pointers like vkVoidFunction
try self.writeIdentifier(name[6..]);
// Function pointer type, strip off the PFN_vk part and replace it with Pfn. Note that
// this function is only called to render the typedeffed function pointers like vkVoidFunction
try self.writeIdentifierFmt("Pfn{}", .{name[6..]});
return;
} else if (mem.startsWith(u8, name, "VK_")) {
// Constants
@@ -706,7 +706,7 @@ fn Renderer(comptime WriterType: type) type {
}
fn renderCommandPtrName(self: *Self, name: []const u8) !void {
try self.writeIdentifierFmt("{}Fn", .{util.trimVkNamespace(name)});
try self.writeIdentifierFmt("Pfn{}", .{util.trimVkNamespace(name)});
}
fn renderCommandPtrs(self: *Self) !void {
@@ -727,7 +727,7 @@ fn Renderer(comptime WriterType: type) type {
try self.writer.writeAll(
\\pub const extension_info = struct {
\\ const Info = struct {
\\ name: []const u8,
\\ name: [:0]const u8,
\\ version: u32,
\\ };
);
@@ -755,6 +755,8 @@ fn Renderer(comptime WriterType: type) type {
, .{name}
);
try self.renderWrapperLoader(dispatch_type);
for (self.registry.decls) |decl| {
if (decl.decl_type == .command) {
const command = decl.decl_type.command;
@@ -767,6 +769,36 @@ fn Renderer(comptime WriterType: type) type {
try self.writer.writeAll("};}\n");
}
fn renderWrapperLoader(self: *Self, dispatch_type: CommandDispatchType) !void {
const params = switch (dispatch_type) {
.base => "loader: PfnGetInstanceProcAddr",
.instance => "instance: Instance, loader: PfnGetInstanceProcAddr",
.device => "device: Device, loader: PfnGetDeviceProcAddr",
};
const loader_first_param = switch (dispatch_type) {
.base => ".null_handle, ",
.instance => "instance, ",
.device => "device, ",
};
@setEvalBranchQuota(2000);
try self.writer.print(
\\pub fn load({}) !Self {{
\\ var self: Self = undefined;
\\ inline for (std.meta.fields(Self)) |field| {{
\\ const name = @ptrCast([*:0]const u8, field.name ++ "\x00");
\\ const cmd_ptr = loader({}name) orelse return error.InvalidCommand;
\\ @field(self, field.name) = @ptrCast(field.field_type, cmd_ptr);
\\ }}
\\ return self;
\\}}
\\
, .{params, loader_first_param}
);
}
fn derefName(name: []const u8) []const u8 {
var it = util.SegmentIterator.init(name);
return if (mem.eql(u8, it.next().?, "p"))
@@ -1012,7 +1044,7 @@ fn Renderer(comptime WriterType: type) type {
try self.renderResultAsErrorName(name);
try self.writer.writeAll(", ");
}
try self.writer.writeAll("Unkown, }");
try self.writer.writeAll("Unknown, }");
}
fn renderResultAsErrorName(self: *Self, name: []const u8) !void {