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perf: add Vulkan pipeline cache persistence for faster startup

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Create a VkPipelineCache at device init, loaded from disk if available.
All 65 pipeline creation calls across 19 renderer files now use the
shared cache. On shutdown, the cache is serialized to disk so subsequent
launches skip redundant shader compilation.

Cache path: ~/.local/share/wowee/pipeline_cache.bin (Linux),
~/Library/Caches/wowee/ (macOS), %APPDATA%\wowee\ (Windows).
Stale/corrupt caches are handled gracefully (fallback to empty cache).
This commit is contained in:
Kelsi 2026-03-24 09:47:03 -07:00
parent c18720f0f0
commit c8c01f8ac0
23 changed files with 192 additions and 72 deletions
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10
src/rendering/terrain_renderer.cpp
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@ -143,7 +143,7 @@ bool TerrainRenderer::initialize(VkContext* ctx, VkDescriptorSetLayout perFrameL
.setLayout(pipelineLayout)
.setRenderPass(mainPass)
.setDynamicStates({ VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR })
.build(device);
.build(device, vkCtx->getPipelineCache());
if (!pipeline) {
LOG_ERROR("TerrainRenderer: failed to create fill pipeline");
@ -165,7 +165,7 @@ bool TerrainRenderer::initialize(VkContext* ctx, VkDescriptorSetLayout perFrameL
.setLayout(pipelineLayout)
.setRenderPass(mainPass)
.setDynamicStates({ VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR })
.build(device);
.build(device, vkCtx->getPipelineCache());
if (!wireframePipeline) {
LOG_WARNING("TerrainRenderer: wireframe pipeline not available");
@ -245,7 +245,7 @@ void TerrainRenderer::recreatePipelines() {
.setLayout(pipelineLayout)
.setRenderPass(mainPass)
.setDynamicStates({ VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR })
.build(device);
.build(device, vkCtx->getPipelineCache());
if (!pipeline) {
LOG_ERROR("TerrainRenderer::recreatePipelines: failed to create fill pipeline");
@ -264,7 +264,7 @@ void TerrainRenderer::recreatePipelines() {
.setLayout(pipelineLayout)
.setRenderPass(mainPass)
.setDynamicStates({ VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR })
.build(device);
.build(device, vkCtx->getPipelineCache());
if (!wireframePipeline) {
LOG_WARNING("TerrainRenderer::recreatePipelines: wireframe pipeline not available");
@ -932,7 +932,7 @@ bool TerrainRenderer::initializeShadow(VkRenderPass shadowRenderPass) {
.setLayout(shadowPipelineLayout_)
.setRenderPass(shadowRenderPass)
.setDynamicStates({VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR})
.build(device);
.build(device, vkCtx->getPipelineCache());
vertShader.destroy();
fragShader.destroy();