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Replaced gli with libktx for terrain tessellation height map loading

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This commit is contained in:
Sascha Willems 2019-08-03 10:39:39 +02:00
parent 803ccd0cf4
commit 85f0e9f6b7
2 changed files with 29 additions and 16 deletions
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23
base/VulkanHeightmap.hpp
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@ -1,18 +1,19 @@
/*
* Heightmap terrain generator
*
* Copyright (C) 2016 by Sascha Willems - www.saschawillems.de
* Copyright (C) by Sascha Willems - www.saschawillems.de
*
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
*/
#include <glm/glm.hpp>
#include <glm/glm.hpp>
#include <gli/gli.hpp>
#include "vulkan/vulkan.h"
#include "VulkanDevice.hpp"
#include "VulkanBuffer.hpp"
#include <ktx.h>
#include <ktxvulkan.h>
namespace vks
{
@ -75,27 +76,31 @@ namespace vks
assert(device);
assert(copyQueue != VK_NULL_HANDLE);
ktxResult result;
ktxTexture* ktxTexture;
#if defined(__ANDROID__)
AAsset* asset = AAssetManager_open(assetManager, filename.c_str(), AASSET_MODE_STREAMING);
AAsset* asset = AAssetManager_open(androidApp->activity->assetManager, filename.c_str(), AASSET_MODE_STREAMING);
assert(asset);
size_t size = AAsset_getLength(asset);
assert(size > 0);
void *textureData = malloc(size);
AAsset_read(asset, textureData, size);
AAsset_close(asset);
gli::texture2d heightTex(gli::load((const char*)textureData, size));
result = ktxTexture_CreateFromMemory(textureData, size, KTX_TEXTURE_CREATE_LOAD_IMAGE_DATA_BIT, target);
free(textureData);
#else
gli::texture2d heightTex(gli::load(filename));
result = ktxTexture_CreateFromNamedFile(filename.c_str(), KTX_TEXTURE_CREATE_LOAD_IMAGE_DATA_BIT, &ktxTexture);
#endif
dim = static_cast<uint32_t>(heightTex.extent().x);
assert(result == KTX_SUCCESS);
ktx_size_t ktxSize = ktxTexture_GetImageSize(ktxTexture, 0);
ktx_uint8_t* ktxImage = ktxTexture_GetData(ktxTexture);
dim = ktxTexture->baseWidth;
heightdata = new uint16_t[dim * dim];
memcpy(heightdata, heightTex.data(), heightTex.size());
memcpy(heightdata, ktxImage, ktxSize);
this->scale = dim / patchsize;
this->heightScale = scale.y;
ktxTexture_Destroy(ktxTexture);
// Generate vertices
Vertex * vertices = new Vertex[patchsize * patchsize * 4];
const float wx = 2.0f;

20
examples/terraintessellation/terraintessellation.cpp
View file

@ -17,7 +17,6 @@
#define GLM_FORCE_DEPTH_ZERO_TO_ONE
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <gli/gli.hpp>
#include <vulkan/vulkan.h>
#include "vulkanexamplebase.h"
@ -25,6 +24,8 @@
#include "VulkanTexture.hpp"
#include "VulkanModel.hpp"
#include "frustum.hpp"
#include <ktx.h>
#include <ktxvulkan.h>
#define VERTEX_BUFFER_BIND_ID 0
#define ENABLE_VALIDATION false
@ -398,23 +399,30 @@ public:
HeightMap(std::string filename, uint32_t patchsize)
#endif
{
ktxResult result;
ktxTexture* ktxTexture;
#if defined(__ANDROID__)
AAsset* asset = AAssetManager_open(assetManager, filename.c_str(), AASSET_MODE_STREAMING);
AAsset* asset = AAssetManager_open(androidApp->activity->assetManager, filename.c_str(), AASSET_MODE_STREAMING);
assert(asset);
size_t size = AAsset_getLength(asset);
assert(size > 0);
void *textureData = malloc(size);
AAsset_read(asset, textureData, size);
AAsset_close(asset);
gli::texture2d heightTex(gli::load((const char*)textureData, size));
result = ktxTexture_CreateFromMemory(textureData, size, KTX_TEXTURE_CREATE_LOAD_IMAGE_DATA_BIT, target);
free(textureData);
#else
gli::texture2d heightTex(gli::load(filename));
result = ktxTexture_CreateFromNamedFile(filename.c_str(), KTX_TEXTURE_CREATE_LOAD_IMAGE_DATA_BIT, &ktxTexture);
#endif
dim = static_cast<uint32_t>(heightTex.extent().x);
assert(result == KTX_SUCCESS);
ktx_size_t ktxSize = ktxTexture_GetImageSize(ktxTexture, 0);
ktx_uint8_t* ktxImage = ktxTexture_GetData(ktxTexture);
dim = ktxTexture->baseWidth;
heightdata = new uint16_t[dim * dim];
memcpy(heightdata, heightTex.data(), heightTex.size());
memcpy(heightdata, ktxImage, ktxSize);
this->scale = dim / patchsize;
ktxTexture_Destroy(ktxTexture);
};
~HeightMap()