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Framebuffer creation

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This commit is contained in:
Robin Voetter
2020-07-04 16:58:10 +02:00
parent e217cbab77
commit fab23126e9
2 changed files with 43 additions and 2 deletions
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43
examples/main.zig
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@@ -43,12 +43,15 @@ pub fn main() !void {
}, null);
defer gc.vkd.destroyPipelineLayout(gc.dev, pipeline_layout, null);
const render_pass = try createRenderPass(&gc, &swapchain);
const render_pass = try createRenderPass(&gc, swapchain);
defer gc.vkd.destroyRenderPass(gc.dev, render_pass, null);
const pipeline = try createPipeline(&gc, extent, pipeline_layout, render_pass);
defer gc.vkd.destroyPipeline(gc.dev, pipeline, null);
var framebuffers = try createFramebuffers(&gc, allocator, render_pass, swapchain);
defer destroyFramebuffers(&gc, allocator, framebuffers);
const pool = try gc.vkd.createCommandPool(gc.dev, .{
.flags = .{},
.queue_family_index = gc.graphics_queue.family,
@@ -74,6 +77,9 @@ pub fn main() !void {
extent.height = @intCast(u32, h);
try swapchain.recreate(extent);
destroyFramebuffers(&gc, allocator, framebuffers);
framebuffers = try createFramebuffers(&gc, allocator, render_pass, swapchain);
destroyCommandBuffers(&gc, pool, allocator, cmdbufs);
cmdbufs = try createCommandBuffers(&gc, pool, allocator, swapchain);
}
@@ -157,7 +163,40 @@ fn destroyCommandBuffers(gc: *const GraphicsContext, pool: vk.CommandPool, alloc
allocator.free(cmdbufs);
}
fn createRenderPass(gc: *const GraphicsContext, swapchain: *const Swapchain) !vk.RenderPass {
fn createFramebuffers(
gc: *const GraphicsContext,
allocator: *Allocator,
render_pass: vk.RenderPass,
swapchain: Swapchain
) ![]vk.Framebuffer {
const framebuffers = try allocator.alloc(vk.Framebuffer, swapchain.swap_images.len);
errdefer allocator.free(framebuffers);
var i: usize = 0;
errdefer for (framebuffers[0 .. i]) |fb| gc.vkd.destroyFramebuffer(gc.dev, fb, null);
for (framebuffers) |*fb| {
fb.* = try gc.vkd.createFramebuffer(gc.dev, .{
.flags = .{},
.render_pass = render_pass,
.attachment_count = 1,
.p_attachments = @ptrCast([*]const vk.ImageView, &swapchain.swap_images[i].view),
.width = swapchain.extent.width,
.height = swapchain.extent.height,
.layers = 1,
}, null);
i += 1;
}
return framebuffers;
}
fn destroyFramebuffers(gc: *const GraphicsContext, allocator: *Allocator, framebuffers: []const vk.Framebuffer) void {
for (framebuffers) |fb| gc.vkd.destroyFramebuffer(gc.dev, fb, null);
allocator.free(framebuffers);
}
fn createRenderPass(gc: *const GraphicsContext, swapchain: Swapchain) !vk.RenderPass {
const color_attachment = vk.AttachmentDescription{
.flags = .{},
.format = swapchain.surface_format.format,