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Port UI icon textures from OpenGL to Vulkan, fix loading screen clear values

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Replace all glGenTextures/glTexImage2D calls in UI code with Vulkan texture
uploads via new VkContext::uploadImGuiTexture() helper. This fixes segfaults
from calling OpenGL functions without a GL context (null GLEW function pointers).

- Add uploadImGuiTexture() to VkContext with staging buffer upload pattern
- Convert game_screen, inventory_screen, spellbook_screen, talent_screen
  from GLuint/GL calls to VkDescriptorSet/Vulkan uploads
- Fix loading_screen clearValueCount (was 1, needs 2 or 3 for MSAA)
This commit is contained in:
Kelsi 2026-02-22 03:32:08 -08:00
parent b1a9d231c7
commit 325254dfcb
11 changed files with 314 additions and 136 deletions
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11
src/rendering/loading_screen.cpp
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@ -338,9 +338,14 @@ void LoadingScreen::render() {
rpInfo.renderArea.offset = {0, 0};
rpInfo.renderArea.extent = vkCtx->getSwapchainExtent();
VkClearValue clearColor = {{{0.0f, 0.0f, 0.0f, 1.0f}}};
rpInfo.clearValueCount = 1;
rpInfo.pClearValues = &clearColor;
// Render pass has 2 attachments (color + depth) or 3 with MSAA
VkClearValue clearValues[3]{};
clearValues[0].color = {{0.0f, 0.0f, 0.0f, 1.0f}};
clearValues[1].depthStencil = {1.0f, 0};
clearValues[2].color = {{0.0f, 0.0f, 0.0f, 1.0f}};
bool msaaOn = vkCtx->getMsaaSamples() > VK_SAMPLE_COUNT_1_BIT;
rpInfo.clearValueCount = msaaOn ? 3 : 2;
rpInfo.pClearValues = clearValues;
vkCmdBeginRenderPass(cmd, &rpInfo, VK_SUBPASS_CONTENTS_INLINE);
ImGui_ImplVulkan_RenderDrawData(ImGui::GetDrawData(), cmd);