From 9286a3db4f529f435ea4270ffc2ca7a7a1da922d Mon Sep 17 00:00:00 2001
From: ladevieq <ladevie.quentin@gmail.com>
Date: Fri, 3 Feb 2023 09:55:06 +0100
Subject: Start presentation abstraction design

---
 api-test/main.cpp | 63 ++++++++++++++++++++++++++++---------------------------
 1 file changed, 32 insertions(+), 31 deletions(-)

(limited to 'api-test/main.cpp')

diff --git a/api-test/main.cpp b/api-test/main.cpp
index 2f973ff..7f30fda 100644
--- a/api-test/main.cpp
+++ b/api-test/main.cpp
@@ -34,6 +34,36 @@ void ui() {
     ImGui::Render();
 }
 
+void update_buffers(ImDrawData* draw_data, const device_buffer& vertex_buffer, const device_buffer& index_buffer) {
+    struct vertex {
+        ImVec2 pos;
+        ImVec2 uv;
+        uint32_t color;
+        uint32_t padding;
+    };
+
+    off_t vertex_offset = 0;
+    off_t index_offset = 0;
+    for (auto index {0U} ; index < draw_data->CmdListsCount; index++) {
+        auto* cmd_list = draw_data->CmdLists[index];
+
+        size_t vertex_bytes_size = sizeof(ImDrawVert) * cmd_list->VtxBuffer.size();
+        auto* vtx_ptr = static_cast<vertex*>(vertex_buffer.mapped_ptr) + vertex_offset;
+        for (auto vtx_index{0}; vtx_index < cmd_list->VtxBuffer.size(); vtx_index++, vtx_ptr++) {
+            auto& vtx = cmd_list->VtxBuffer[vtx_index];
+            vtx_ptr->pos = vtx.pos;
+            vtx_ptr->uv = vtx.uv;
+            vtx_ptr->color = vtx.col;
+        }
+        // memcpy(static_cast<uint8_t*>(vertex_buffer.mapped_ptr) + vertex_offset, cmd_list->VtxBuffer.Data, vertex_bytes_size);
+        vertex_offset += static_cast<off_t>(vertex_bytes_size);
+
+        size_t index_bytes_size = sizeof(ImDrawIdx) * cmd_list->IdxBuffer.size();
+        memcpy(static_cast<uint8_t*>(index_buffer.mapped_ptr) + index_offset, cmd_list->IdxBuffer.Data, index_bytes_size);
+        index_offset += static_cast<off_t>(index_bytes_size);
+    }
+}
+
 int main() {
 
 #ifdef ENABLE_RENDERDOC
@@ -193,6 +223,7 @@ int main() {
     command_buffers[0].barrier(gpu_texture_handle, VK_PIPELINE_STAGE_2_COLOR_ATTACHMENT_OUTPUT_BIT, VK_ACCESS_2_COLOR_ATTACHMENT_WRITE_BIT, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
 
     command_buffers[0].stop();
+
     std::array<struct command_buffer, 1U> compute_command_buffers = {command_buffers[0]};
     device->submit(compute_command_buffers, nullptr, &semaphore);
 
@@ -206,33 +237,7 @@ int main() {
         ui();
 
         auto* draw_data = ImGui::GetDrawData();
-        struct vertex {
-            ImVec2 pos;
-            ImVec2 uv;
-            uint32_t color;
-            uint32_t padding;
-        };
-
-        off_t vertex_offset = 0;
-        off_t index_offset = 0;
-        for (auto index {0U} ; index < draw_data->CmdListsCount; index++) {
-            auto* cmd_list = draw_data->CmdLists[index];
-
-            size_t vertex_bytes_size = sizeof(ImDrawVert) * cmd_list->VtxBuffer.size();
-            auto* vtx_ptr = static_cast<vertex*>(vertex_buffer.mapped_ptr) + vertex_offset;
-            for (auto vtx_index{0}; vtx_index < cmd_list->VtxBuffer.size(); vtx_index++, vtx_ptr++) {
-                auto& vtx = cmd_list->VtxBuffer[vtx_index];
-                vtx_ptr->pos = vtx.pos;
-                vtx_ptr->uv = vtx.uv;
-                vtx_ptr->color = vtx.col;
-            }
-            // memcpy(static_cast<uint8_t*>(vertex_buffer.mapped_ptr) + vertex_offset, cmd_list->VtxBuffer.Data, vertex_bytes_size);
-            vertex_offset += static_cast<off_t>(vertex_bytes_size);
-
-            size_t index_bytes_size = sizeof(ImDrawIdx) * cmd_list->IdxBuffer.size();
-            memcpy(static_cast<uint8_t*>(index_buffer.mapped_ptr) + index_offset, cmd_list->IdxBuffer.Data, index_bytes_size);
-            index_offset += static_cast<off_t>(index_bytes_size);
-        }
+        update_buffers(draw_data, vertex_buffer, index_buffer);
 
         device->wait(semaphore);
 
@@ -259,8 +264,6 @@ int main() {
         printf("%llu\n", sizeof(ImDrawVert));
 
         uint32_t draw_index = 0U;
-        uint32_t vtx_offset = 0U;
-        uint32_t idx_offset = 0U;
         std::array<draw_params, 100U> draws;
         for (auto index {0U} ; index < draw_data->CmdListsCount; index++) {
             auto* cmd_list = draw_data->CmdLists[index];
@@ -290,7 +293,6 @@ int main() {
                 });
 
                 draw_index++;
-                // vtx_offset += draw_command.
             }
         }
 
@@ -303,7 +305,6 @@ int main() {
         device->submit(ui_command_buffers, nullptr, &semaphore);
         RD_END_CAPTURE;
 
-        // std::system("PAUSE");
         break;
     }
 
-- 
cgit v1.3