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Preload terrain textures on background thread and fix ramp Z-snapping

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Load BLP texture data during prepareTile() and upload to GL cache in
finalizeTile(), eliminating file I/O stalls on the main thread. Reduce
ready tiles per frame to 1. Fix camera sweep to snap Z to ramp surfaces.
Change hearthstone action bar slot from spell to item.
This commit is contained in:
Kelsi 2026-02-08 01:16:23 -08:00
parent 0ce38cfb99
commit d910073d7a
6 changed files with 66 additions and 13 deletions
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27
src/rendering/terrain_renderer.cpp
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@ -252,6 +252,33 @@ GLuint TerrainRenderer::loadTexture(const std::string& path) {
return textureID;
}
void TerrainRenderer::uploadPreloadedTextures(const std::unordered_map<std::string, pipeline::BLPImage>& textures) {
for (const auto& [path, blp] : textures) {
// Skip if already cached
if (textureCache.find(path) != textureCache.end()) continue;
if (!blp.isValid()) {
textureCache[path] = whiteTexture;
continue;
}
GLuint textureID;
glGenTextures(1, &textureID);
glBindTexture(GL_TEXTURE_2D, textureID);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
blp.width, blp.height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, blp.data.data());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glGenerateMipmap(GL_TEXTURE_2D);
applyAnisotropicFiltering();
glBindTexture(GL_TEXTURE_2D, 0);
textureCache[path] = textureID;
}
}
GLuint TerrainRenderer::createAlphaTexture(const std::vector<uint8_t>& alphaData) {
if (alphaData.empty()) {
return 0;