Fix cuda compressor. Start work on new UI.

src/nvtt/cuda/CompressKernel.cu

@@ -29,12 +29,6 @@
 
 #define NUM_THREADS 64		// Number of threads per block.
 
-#if __DEVICE_EMULATION__
-#define __debugsync() __syncthreads()
-#else
-#define __debugsync()
-#endif
-
 typedef unsigned char uchar;
 typedef unsigned short ushort;
 typedef unsigned int uint;
@@ -345,30 +339,6 @@ __device__ int packColors(float3 * values, float * weights, int * ranks)
 
 __device__ void sortColors(const float * values, int * ranks)
 {
-#if __DEVICE_EMULATION__
-    if (threadIdx.x == 0)
-    {
-        for (int tid = 0; tid < 16; tid++)
-        {
-            int rank = 0;
-            for (int i = 0; i < 16; i++)
-            {
-                rank += (values[i] < values[tid]);
-            }
-            
-            ranks[tid] = rank;
-        }
-
-        // Resolve elements with the same index.
-        for (int i = 0; i < 15; i++)
-        {
-            for (int tid = 0; tid < 16; tid++)
-            {
-                if (tid > i && ranks[tid] == ranks[i]) ++ranks[tid];
-            }
-        }
-    }
-#else
     const int tid = threadIdx.x;
 
     int rank = 0;
@@ -387,35 +357,10 @@ __device__ void sortColors(const float * values, int * ranks)
     {
         if ((tid > i) & (ranks[tid] == ranks[i])) ++ranks[tid];
     }
-#endif
 }
 
 __device__ void sortColors(const float * values, int * ranks, int count)
 {
-#if __DEVICE_EMULATION__
-    if (threadIdx.x == 0)
-    {
-        for (int tid = 0; tid < count; tid++)
-        {
-            int rank = 0;
-            for (int i = 0; i < count; i++)
-            {
-                rank += (values[i] < values[tid]);
-            }
-            
-            ranks[tid] = rank;
-        }
-
-        // Resolve elements with the same index.
-        for (int i = 0; i < count-1; i++)
-        {
-            for (int tid = 0; tid < count; tid++)
-            {
-                if (tid > i && ranks[tid] == ranks[i]) ++ranks[tid];
-            }
-        }
-    }
-#else
     const int tid = threadIdx.x;
 
     int rank = 0;
@@ -434,7 +379,6 @@ __device__ void sortColors(const float * values, int * ranks, int count)
     {
         if ((tid > i) & (ranks[tid] == ranks[i])) ++ranks[tid];
     }
-#endif
 }
 
 
@@ -443,7 +387,7 @@ __device__ void sortColors(const float * values, int * ranks, int count)
 // Load color block to shared mem
 ////////////////////////////////////////////////////////////////////////////////
 
-/*__device__ void loadColorBlock(const uint * image, float3 colors[16], float3 sums[16], int xrefs[16], int * sameColor)
+__device__ void loadColorBlockTex(uint firstBlock, uint blockWidth, float3 colors[16], float3 sums[16], int xrefs[16], int * sameColor)
 {
     const int bid = blockIdx.x;
     const int idx = threadIdx.x;
@@ -452,51 +396,8 @@ __device__ void sortColors(const float * values, int * ranks, int count)
 
     if (idx < 16)
     {
-		// Read color and copy to shared mem.
-		uint c = image[(bid) * 16 + idx];
-		
-		colors[idx] = color32ToFloat3(c);
-		
-		// No need to synchronize, 16 < warp size.
-		__debugsync();
-		
-		// Sort colors along the best fit line.
-		colorSums(colors, sums);
-		float3 axis = bestFitLine(colors, sums[0], kColorMetric);
-		
-		*sameColor = (axis == make_float3(0, 0, 0));
-		
-		dps[idx] = dot(colors[idx], axis);
-		
-		__debugsync();
-		
-		sortColors(dps, xrefs);
-		
-		float3 tmp = colors[idx];
-		__debugsync();
-		colors[xrefs[idx]] = tmp;
-	}
-#if __DEVICE_EMULATION__
-	else
-	{
-		__debugsync();
-		__debugsync();
-		__debugsync();
-	}
-#endif
-}*/
-
-__device__ void loadColorBlockTex(uint firstBlock, uint width, float3 colors[16], float3 sums[16], int xrefs[16], int * sameColor)
-{
-	const int bid = blockIdx.x;
-	const int idx = threadIdx.x;
-
-	__shared__ float dps[16];
-
-	if (idx < 16)
-	{
-		float x = 4 * ((firstBlock + bid) % width) + idx % 4; // @@ Avoid mod and div by using 2D grid?
-		float y = 4 * ((firstBlock + bid) / width) + idx / 4;
+        float x = 4 * ((firstBlock + bid) % blockWidth) + idx % 4; // @@ Avoid mod and div by using 2D grid?
+        float y = 4 * ((firstBlock + bid) / blockWidth) + idx / 4;
 
         // Read color and copy to shared mem.
         float4 c = tex2D(tex, x, y);
@@ -505,9 +406,6 @@ __device__ void loadColorBlockTex(uint firstBlock, uint width, float3 colors[16]
         colors[idx].y = c.y;
         colors[idx].z = c.x;
 
-		// No need to synchronize, 16 < warp size.
-		__debugsync();
-		
         // Sort colors along the best fit line.
         colorSums(colors, sums);
         float3 axis = bestFitLine(colors, sums[0], kColorMetric);
@@ -516,22 +414,11 @@ __device__ void loadColorBlockTex(uint firstBlock, uint width, float3 colors[16]
 
         dps[idx] = dot(colors[idx], axis);
 
-		__debugsync();
-		
         sortColors(dps, xrefs);
 
         float3 tmp = colors[idx];
-		__debugsync();
         colors[xrefs[idx]] = tmp;
     }
-#if __DEVICE_EMULATION__
-	else
-	{
-		__debugsync();
-		__debugsync();
-		__debugsync();
-	}
-#endif
 }
 
 /*
@@ -598,9 +485,6 @@ __device__ void loadColorBlockTex(uint firstBlock, uint width, float3 colors[16]
 
         colors[idx] = rawColors[idx] * weights[idx];
 
-		// No need to synchronize, 16 < warp size.
-		__debugsync();
-		
         // Sort colors along the best fit line.
         colorSums(colors, sums);
         float3 axis = bestFitLine(colors, sums[0], kColorMetric);
@@ -612,82 +496,15 @@ __device__ void loadColorBlockTex(uint firstBlock, uint width, float3 colors[16]
 
         dps[idx] = dot(colors[idx], axis);
 
-		__debugsync();
-		
         sortColors(dps, xrefs);
 
         float3 tmp = colors[idx];
         float w = weights[idx];
-		__debugsync();
         colors[xrefs[idx]] = tmp;
         weights[xrefs[idx]] = w;
     }
-#if __DEVICE_EMULATION__
-	else
-	{
-		__debugsync();
-		__debugsync();
-		__debugsync();
-	}
-#endif
 }
 
-/*
-__device__ void loadColorBlock(const uint * image, float3 colors[16], float3 sums[16], float weights[16], int xrefs[16], int * sameColor)
-{
-	const int bid = blockIdx.x;
-	const int idx = threadIdx.x;
-
-	__shared__ float3 rawColors[16];
-	__shared__ float dps[16];
-
-	if (idx < 16)
-	{
-		// Read color and copy to shared mem.
-		uint c = image[(bid) * 16 + idx];
-		
-		rawColors[idx].z = ((c >> 0) & 0xFF) * (1.0f / 255.0f);
-		rawColors[idx].y = ((c >> 8) & 0xFF) * (1.0f / 255.0f);
-		rawColors[idx].x = ((c >> 16) & 0xFF) * (1.0f / 255.0f);
-		weights[idx] = (((c >> 24) & 0xFF) + 1) * (1.0f / 256.0f);
-		
-		colors[idx] = rawColors[idx] * weights[idx];
-
-		// No need to synchronize, 16 < warp size.
-		__debugsync();
-
-		// Sort colors along the best fit line.
-		colorSums(colors, sums);
-		float3 axis = bestFitLine(colors, sums[0], kColorMetric);
-
-		*sameColor = (axis == make_float3(0, 0, 0));
-
-		// Single color compressor needs unweighted colors.
-		if (*sameColor) colors[idx] = rawColors[idx];
-
-		dps[idx] = dot(rawColors[idx], axis);
-		
-		__debugsync();
-		
-		sortColors(dps, xrefs);
-		
-		float3 tmp = colors[idx];
-		float w = weights[idx];
-		__debugsync();
-		colors[xrefs[idx]] = tmp;
-		weights[xrefs[idx]] = w;
-	}
-#if __DEVICE_EMULATION__
-	else
-	{
-		__debugsync();
-		__debugsync();
-		__debugsync();
-	}
-#endif
-}
-*/
-
 __device__ void loadColorBlock(const uint * image, float2 colors[16], float2 sums[16], int xrefs[16], int * sameColor)
 {
     const int bid = blockIdx.x;
@@ -703,9 +520,6 @@ __device__ void loadColorBlock(const uint * image, float2 colors[16], float2 sum
         colors[idx].y = ((c >> 8) & 0xFF) * (1.0f / 255.0f);
         colors[idx].x = ((c >> 16) & 0xFF) * (1.0f / 255.0f);
 
-		// No need to synchronize, 16 < warp size.
-		__debugsync();
-
         // Sort colors along the best fit line.
         colorSums(colors, sums);
         float2 axis = bestFitLine(colors, sums[0]);
@@ -714,22 +528,11 @@ __device__ void loadColorBlock(const uint * image, float2 colors[16], float2 sum
 
         dps[idx] = dot(colors[idx], axis);
 
-		__debugsync();
-		
         sortColors(dps, xrefs);
 
         float2 tmp = colors[idx];
-		__debugsync();
         colors[xrefs[idx]] = tmp;
     }
-#if __DEVICE_EMULATION__
-	else
-	{
-		__debugsync();
-		__debugsync();
-		__debugsync();
-	}
-#endif
 }
 
 
@@ -1389,23 +1192,6 @@ __device__ int findMinError(float * errors)
     __shared__ int indices[NUM_THREADS];
     indices[idx] = idx;
 
-#if __DEVICE_EMULATION__
-	for(int d = NUM_THREADS/2; d > 0; d >>= 1)
-	{
-		__syncthreads();
-		
-		if (idx < d)
-		{
-			float err0 = errors[idx];
-			float err1 = errors[idx + d];
-			
-			if (err1 < err0) {
-				errors[idx] = err1;
-				indices[idx] = indices[idx + d];
-			}
-		}
-	}
-#else
     for(int d = NUM_THREADS/2; d > 32; d >>= 1)
     {
         __syncthreads();
@@ -1452,7 +1238,6 @@ __device__ int findMinError(float * errors)
             indices[idx] = indices[idx + 1];
         }
     }
-#endif
 
     __syncthreads();
 
@@ -1651,14 +1436,14 @@ __device__ void saveSingleColorBlockCTX1(float2 color, uint2 * result)
 // Compress color block
 ////////////////////////////////////////////////////////////////////////////////
 
-__global__ void compressDXT1(uint firstBlock, uint w, const uint * permutations, uint2 * result)
+__global__ void compressDXT1(uint firstBlock, uint blockWidth, const uint * permutations, uint2 * result)
 {
     __shared__ float3 colors[16];
     __shared__ float3 sums[16];
     __shared__ int xrefs[16];
     __shared__ int sameColor;
 
-	loadColorBlockTex(firstBlock, w, colors, sums, xrefs, &sameColor);
+    loadColorBlockTex(firstBlock, blockWidth, colors, sums, xrefs, &sameColor);
 
     __syncthreads();
 
@@ -1694,14 +1479,14 @@ __global__ void compressDXT1(uint firstBlock, uint w, const uint * permutations,
 }
 
 
-__global__ void compressLevel4DXT1(uint firstBlock, uint w, const uint * permutations, uint2 * result)
+__global__ void compressLevel4DXT1(uint firstBlock, uint blockWidth, const uint * permutations, uint2 * result)
 {
     __shared__ float3 colors[16];
     __shared__ float3 sums[16];
     __shared__ int xrefs[16];
     __shared__ int sameColor;
 
-	loadColorBlockTex(firstBlock, w, colors, sums, xrefs, &sameColor);
+    loadColorBlockTex(firstBlock, blockWidth, colors, sums, xrefs, &sameColor);
 
     __syncthreads();
 
@@ -1728,7 +1513,7 @@ __global__ void compressLevel4DXT1(uint firstBlock, uint w, const uint * permuta
     }
 }
 
-__global__ void compressWeightedDXT1(uint firstBlock, uint w, const uint * permutations, uint2 * result)
+__global__ void compressWeightedDXT1(uint firstBlock, uint blockWidth, const uint * permutations, uint2 * result)
 {
     __shared__ float3 colors[16];
     __shared__ float3 sums[16];
@@ -1736,7 +1521,7 @@ __global__ void compressWeightedDXT1(uint firstBlock, uint w, const uint * permu
     __shared__ int xrefs[16];
     __shared__ int sameColor;
 
-	loadColorBlockTex(firstBlock, w, colors, sums, weights, xrefs, &sameColor);
+    loadColorBlockTex(firstBlock, blockWidth, colors, sums, weights, xrefs, &sameColor);
 
     __syncthreads();
 
@@ -2165,33 +1950,33 @@ extern "C" void bindTextureToArray(cudaArray * d_data)
 ////////////////////////////////////////////////////////////////////////////////
 
 // DXT1 compressors:
-extern "C" void compressKernelDXT1(uint firstBlock, uint blockNum, uint w, uint * d_result, uint * d_bitmaps)
+extern "C" void compressKernelDXT1(uint firstBlock, uint blockNum, uint blockWidth, uint * d_result, uint * d_bitmaps)
 {
-	compressDXT1<<<blockNum, NUM_THREADS>>>(firstBlock, w, d_bitmaps, (uint2 *)d_result);
+    compressDXT1<<<blockNum, NUM_THREADS>>>(firstBlock, blockWidth, d_bitmaps, (uint2 *)d_result);
 }
 
-extern "C" void compressKernelDXT1_Level4(uint firstBlock, uint blockNum, uint w, uint * d_result, uint * d_bitmaps)
+extern "C" void compressKernelDXT1_Level4(uint firstBlock, uint blockNum, uint blockWidth, uint * d_result, uint * d_bitmaps)
 {
-	compressLevel4DXT1<<<blockNum, NUM_THREADS>>>(firstBlock, w, d_bitmaps, (uint2 *)d_result);
+    compressLevel4DXT1<<<blockNum, NUM_THREADS>>>(firstBlock, blockWidth, d_bitmaps, (uint2 *)d_result);
 }
 
-extern "C" void compressWeightedKernelDXT1(uint firstBlock, uint blockNum, uint w, uint * d_result, uint * d_bitmaps)
+extern "C" void compressWeightedKernelDXT1(uint firstBlock, uint blockNum, uint blockWidth, uint * d_result, uint * d_bitmaps)
 {
-	compressWeightedDXT1<<<blockNum, NUM_THREADS>>>(firstBlock, w, d_bitmaps, (uint2 *)d_result);
+    compressWeightedDXT1<<<blockNum, NUM_THREADS>>>(firstBlock, blockWidth, d_bitmaps, (uint2 *)d_result);
 }
 
 // @@ DXT1a compressors.
 
 
 // @@ DXT3 compressors:
-extern "C" void compressKernelDXT3(uint firstBlock, uint blockNum, uint w, uint * d_result, uint * d_bitmaps)
+extern "C" void compressKernelDXT3(uint firstBlock, uint blockNum, uint blockWidth, uint * d_result, uint * d_bitmaps)
 {
-	//compressDXT3<<<blockNum, NUM_THREADS>>>(firstBlock, w, d_bitmaps, (uint2 *)d_result);
+    //compressDXT3<<<blockNum, NUM_THREADS>>>(firstBlock, blockWidth, d_bitmaps, (uint2 *)d_result);
 }
 
-extern "C" void compressWeightedKernelDXT3(uint firstBlock, uint blockNum, uint w, uint * d_result, uint * d_bitmaps)
+extern "C" void compressWeightedKernelDXT3(uint firstBlock, uint blockNum, uint blockWidth, uint * d_result, uint * d_bitmaps)
 {
-	//compressWeightedDXT3<<<blockNum, NUM_THREADS>>>(firstBlock, w, d_bitmaps, (uint2 *)d_result);
+    //compressWeightedDXT3<<<blockNum, NUM_THREADS>>>(firstBlock, blockWidth, d_bitmaps, (uint2 *)d_result);
 }
 
 

src/nvtt/cuda/CudaCompressorDXT.cpp

@@ -34,10 +34,10 @@
 #include "nvtt/QuickCompressDXT.h"
 #include "nvtt/OptimalCompressDXT.h"
 
-
 #include <time.h>
 #include <stdio.h>
 
+
 #if defined HAVE_CUDA
 #include <cuda_runtime_api.h>
 
@@ -141,7 +141,7 @@ void CudaCompressor::compress(nvtt::InputFormat inputFormat, nvtt::AlphaMode alp
     }
     else
     {
-#pragma message(NV_FILE_LINE "FIXME: Floating point textures not really supported by CUDA compressors.")
+#pragma message(NV_FILE_LINE "FIXME: Floating point textures not really supported by CUDA compressors.") // @@ What's missing???
         cudaChannelFormatDesc channelDesc = cudaCreateChannelDesc(32, 32, 32, 32, cudaChannelFormatKindFloat);
         cudaMallocArray(&d_image, &channelDesc, w, h);
 
@@ -156,7 +156,7 @@ void CudaCompressor::compress(nvtt::InputFormat inputFormat, nvtt::AlphaMode alp
     const uint blockNum = bw * bh;
     const uint compressedSize = blockNum * bs;
 
-    void * h_result = malloc(min(blockNum, MAX_BLOCKS) * bs);
+    void * h_result = ::malloc(min(blockNum, MAX_BLOCKS) * bs);
 
     setup(d_image, compressionOptions);
 
@@ -164,11 +164,11 @@ void CudaCompressor::compress(nvtt::InputFormat inputFormat, nvtt::AlphaMode alp
     // timer.start();
 
     uint bn = 0;
-    while(bn != blockNum)
+    while (bn != blockNum)
     {
         uint count = min(blockNum - bn, MAX_BLOCKS);
 
-        compressBlocks(bn, count, w, h, alphaMode, compressionOptions, h_result);
+        compressBlocks(bn, count, bw, bh, alphaMode, compressionOptions, h_result);
 
         // Check for errors.
         cudaError_t err = cudaGetLastError();
@@ -198,10 +198,10 @@ void CudaCompressorDXT1::setup(cudaArray * image, const nvtt::CompressionOptions
     bindTextureToArray(image);
 }
 
-void CudaCompressorDXT1::compressBlocks(uint first, uint count, uint w, uint h, nvtt::AlphaMode alphaMode, const nvtt::CompressionOptions::Private & compressionOptions, void * output)
+void CudaCompressorDXT1::compressBlocks(uint first, uint count, uint bw, uint bh, nvtt::AlphaMode alphaMode, const nvtt::CompressionOptions::Private & compressionOptions, void * output)
 {
     // Launch kernel.
-    compressKernelDXT1(first, count, w, m_ctx.result, m_ctx.bitmapTable);
+    compressKernelDXT1(first, count, bw, m_ctx.result, m_ctx.bitmapTable);
 
     // Copy result to host.
     cudaMemcpy(output, m_ctx.result, count * 8, cudaMemcpyDeviceToHost);
@@ -214,10 +214,10 @@ void CudaCompressorDXT3::setup(cudaArray * image, const nvtt::CompressionOptions
     bindTextureToArray(image);
 }
 
-void CudaCompressorDXT3::compressBlocks(uint first, uint count, uint w, uint h, nvtt::AlphaMode alphaMode, const nvtt::CompressionOptions::Private & compressionOptions, void * output)
+void CudaCompressorDXT3::compressBlocks(uint first, uint count, uint bw, uint bh, nvtt::AlphaMode alphaMode, const nvtt::CompressionOptions::Private & compressionOptions, void * output)
 {
     // Launch kernel.
-    compressKernelDXT3(first, count, w, m_ctx.result, m_ctx.bitmapTable);
+    compressKernelDXT3(first, count, bw, m_ctx.result, m_ctx.bitmapTable);
 
     // Copy result to host.
     cudaMemcpy(output, m_ctx.result, count * 16, cudaMemcpyDeviceToHost);
@@ -230,10 +230,10 @@ void CudaCompressorDXT5::setup(cudaArray * image, const nvtt::CompressionOptions
     bindTextureToArray(image);
 }
 
-void CudaCompressorDXT5::compressBlocks(uint first, uint count, uint w, uint h, nvtt::AlphaMode alphaMode, const nvtt::CompressionOptions::Private & compressionOptions, void * output)
+void CudaCompressorDXT5::compressBlocks(uint first, uint count, uint bw, uint bh, nvtt::AlphaMode alphaMode, const nvtt::CompressionOptions::Private & compressionOptions, void * output)
 {
     /*// Launch kernel.
-    compressKernelDXT5(first, count, w, m_ctx.result, m_ctx.bitmapTable);
+    compressKernelDXT5(first, count, bw, m_ctx.result, m_ctx.bitmapTable);
 
     // Copy result to host.
     cudaMemcpy(output, m_ctx.result, count * 16, cudaMemcpyDeviceToHost);*/
@@ -241,7 +241,7 @@ void CudaCompressorDXT5::compressBlocks(uint first, uint count, uint w, uint h,
     // Launch kernel.
     if (alphaMode == AlphaMode_Transparency)
     {
-    //	compressWeightedKernelDXT1(first, count, w, m_ctx.result, m_ctx.bitmapTable);
+    //	compressWeightedKernelDXT1(first, count, bw, m_ctx.result, m_ctx.bitmapTable);
     }
     else
     {

src/nvtt/tools/CMakeLists.txt

@@ -48,14 +48,13 @@ IF(GCONFTOOL2)
 ENDIF(GCONFTOOL2)
 
 # UI tools
-IF(QT4_FOUND) # AND NOT MSVC)
+IF(QT4_FOUND)
 	SET(QT_USE_QTOPENGL TRUE)
 	INCLUDE_DIRECTORIES(${QT_INCLUDE_DIR} ${CMAKE_CURRENT_BINARY_DIR})
 	
 	SET(SRCS
-		ui/main.cpp
-		ui/configdialog.h
-		ui/configdialog.cpp)
+                compressdialog.h
+                compressdialog.cpp)
 
 	SET(LIBS
 		nvtt
@@ -63,12 +62,12 @@ IF(QT4_FOUND) # AND NOT MSVC)
 		${QT_QTGUI_LIBRARY}
 		${QT_QTOPENGL_LIBRARY})
 
-	QT4_WRAP_UI(UICS ui/configdialog.ui)
-	QT4_WRAP_CPP(MOCS ui/configdialog.h)
+        QT4_WRAP_UI(UICS compressdialog.ui)
+        QT4_WRAP_CPP(MOCS compressdialog.h)
 	#QT4_ADD_RESOURCES(RCCS ui/configdialog.rc)
 
-    #ADD_EXECUTABLE(nvcompressui MACOSX_BUNDLE ${SRCS} ${UICS} ${MOCS})
-    #TARGET_LINK_LIBRARIES(nvcompressui ${LIBS})
+    ADD_EXECUTABLE(nvtt-diag MACOSX_BUNDLE ${SRCS} ${UICS} ${MOCS})
+    TARGET_LINK_LIBRARIES(nvtt-diag ${LIBS})
 
-ENDIF(QT4_FOUND) # AND NOT MSVC)
+ENDIF(QT4_FOUND)
 

src/nvtt/tools/compressdialog.cpp

@@ -0,0 +1,124 @@
+#include "compressdialog.h"
+#include "ui_compressdialog.h"
+
+#include <QtGui/QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    CompressDialog dialog("");
+
+    return dialog.exec();
+}
+
+
+
+CompressDialog::CompressDialog(const QString & fileName, QWidget *parent) : QDialog(parent)
+{
+    ui.setupUi(this);
+
+    //connect(ui.openButton, SIGNAL(clicked()), this, SLOT(openClicked()));
+    connect(ui.generateMipmapsCheckBox, SIGNAL(stateChanged(int)), this, SLOT(generateMipmapsChanged(int)));
+    connect(ui.mipmapFilterComboBox, SIGNAL(activated(QString)), this, SLOT(mipmapFilterChanged(QString)));
+    //connect(ui.mipmapFilterSettings, SIGNAL(clicked()), this, SLOT(mipmapFilterSettingsShow()));
+
+    connect(ui.formatComboBox, SIGNAL(activated(QString)), this, SLOT(formatChanged(QString)));
+
+
+    connect(ui.redSpinBox, SIGNAL(valueChanged(double)), this, SLOT(colorWeightChanged()));
+    connect(ui.greenSpinBox, SIGNAL(valueChanged(double)), this, SLOT(colorWeightChanged()));
+    connect(ui.blueSpinBox, SIGNAL(valueChanged(double)), this, SLOT(colorWeightChanged()));
+    connect(ui.uniformButton, SIGNAL(toggled(bool)), this, SLOT(uniformWeightToggled(bool)));
+    connect(ui.luminanceButton, SIGNAL(toggled(bool)), this, SLOT(luminanceWeightToggled(bool)));
+
+    //connect(ui.rgbMapRadioButton, SIGNAL(toggled(bool)), this, SLOT(colorModeChanged()));
+    //connect(ui.normalMapRadioButton, SIGNAL(toggled(bool)), this, SLOT(normalMapModeChanged(bool)));
+}
+
+CompressDialog::~CompressDialog()
+{
+}
+
+
+void CompressDialog::openClicked()
+{
+    // @@ What is openButton?
+}
+
+
+void CompressDialog::generateMipmapsChanged(int state)
+{
+    Q_UNUSED(state);
+
+    bool generateMipmapEnabled = ui.generateMipmapsCheckBox->isChecked();
+
+    ui.mipmapFilterLabel->setEnabled(generateMipmapEnabled);
+    ui.mipmapFilterComboBox->setEnabled(generateMipmapEnabled);
+    ui.limitMipmapsCheckBox->setEnabled(generateMipmapEnabled);
+
+    bool enableFilterSettings = (ui.mipmapFilterComboBox->currentText() == "Kaiser");
+    ui.mipmapFilterSettings->setEnabled(generateMipmapEnabled && enableFilterSettings);
+
+    bool enableMaxLevel = ui.limitMipmapsCheckBox->isChecked();
+    ui.maxLevelLabel->setEnabled(generateMipmapEnabled && enableMaxLevel);
+    ui.maxLevelSpinBox->setEnabled(generateMipmapEnabled && enableMaxLevel);
+}
+
+void CompressDialog::mipmapFilterChanged(QString name)
+{
+    bool enableFilterSettings = (name == "Kaiser");
+    ui.mipmapFilterSettings->setEnabled(enableFilterSettings);
+}
+
+void CompressDialog::formatChanged(QString format)
+{
+    if (format == "Uncompressed") {
+        ui.formatOptions->setCurrentIndex(1);
+    }
+    else {
+        ui.formatOptions->setCurrentIndex(0);
+    }
+}
+
+void CompressDialog::colorWeightChanged()
+{
+    double r = ui.redSpinBox->value();
+    double g = ui.greenSpinBox->value();
+    double b = ui.blueSpinBox->value();
+
+    bool uniform = (r == 1.0 && g == 1.0 && b == 1.0);
+    bool luminance = (r == 0.3 && g == 0.59 && b == 0.11);
+
+    ui.uniformButton->setChecked(uniform);
+    ui.luminanceButton->setChecked(luminance);
+}
+
+void CompressDialog::uniformWeightToggled(bool checked)
+{
+    if (checked)
+    {
+        ui.redSpinBox->setValue(1.0);
+        ui.greenSpinBox->setValue(1.0);
+        ui.blueSpinBox->setValue(1.0);
+    }
+}
+
+void CompressDialog::luminanceWeightToggled(bool checked)
+{
+    if (checked)
+    {
+        ui.redSpinBox->setValue(0.3);
+        ui.greenSpinBox->setValue(0.59);
+        ui.blueSpinBox->setValue(0.11);
+    }
+}
+
+void CompressDialog::normalMapModeChanged(bool checked)
+{
+    //ui.alphaModeGroupBox->setEnabled(!checked);
+    //ui.inputGammaSpinBox->setEnabled(!checked);
+    //ui.inputGammaLabel->setEnabled(!checked);
+    //ui.outputGammaSpinBox->setEnabled(!checked);
+    //ui.outputGammaLabel->setEnabled(!checked);
+}

src/nvtt/tools/compressdialog.h

@@ -0,0 +1,34 @@
+#ifndef COMPRESSDIALOG_H
+#define COMPRESSDIALOG_H
+
+#include <QtGui/QDialog>
+
+#include "ui_compressdialog.h"
+
+
+class CompressDialog : public QDialog
+{
+    Q_OBJECT
+public:
+    explicit CompressDialog(const QString & fileName, QWidget *parent = 0);
+    ~CompressDialog();
+
+protected slots:
+
+    void openClicked();
+    void generateMipmapsChanged(int state);
+    void mipmapFilterChanged(QString name);
+    void formatChanged(QString format);
+
+    void colorWeightChanged();
+    void uniformWeightToggled(bool checked);
+    void luminanceWeightToggled(bool checked);
+
+    void normalMapModeChanged(bool checked);
+
+
+private:
+    Ui::CompressDialog ui;
+};
+
+#endif // COMPRESSDIALOG_H

src/nvtt/tools/compressdialog.ui

@@ -0,0 +1,768 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>CompressDialog</class>
+ <widget class="QDialog" name="CompressDialog">
+  <property name="minimumSize">
+   <size>
+    <width>280</width>
+    <height>540</height>
+   </size>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <property name="spacing">
+    <number>8</number>
+   </property>
+   <property name="margin">
+    <number>10</number>
+   </property>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QLineEdit" name="lineEdit"/>
+     </item>
+     <item>
+      <widget class="QToolButton" name="toolButton">
+       <property name="maximumSize">
+        <size>
+         <width>16777215</width>
+         <height>24</height>
+        </size>
+       </property>
+       <property name="text">
+        <string>...</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QToolBox" name="toolBox">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Preferred" vsizetype="Expanding">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="frameShape">
+      <enum>QFrame::Box</enum>
+     </property>
+     <property name="frameShadow">
+      <enum>QFrame::Sunken</enum>
+     </property>
+     <property name="currentIndex">
+      <number>3</number>
+     </property>
+     <widget class="QWidget" name="page_info">
+      <property name="geometry">
+       <rect>
+        <x>0</x>
+        <y>0</y>
+        <width>249</width>
+        <height>367</height>
+       </rect>
+      </property>
+      <attribute name="label">
+       <string>Image Info</string>
+      </attribute>
+     </widget>
+     <widget class="QWidget" name="page_compression">
+      <property name="geometry">
+       <rect>
+        <x>0</x>
+        <y>0</y>
+        <width>249</width>
+        <height>367</height>
+       </rect>
+      </property>
+      <attribute name="label">
+       <string>Compression Options</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="verticalLayout">
+       <property name="spacing">
+        <number>2</number>
+       </property>
+       <property name="margin">
+        <number>6</number>
+       </property>
+       <item>
+        <layout class="QHBoxLayout">
+         <item>
+          <widget class="QLabel" name="label_3">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="text">
+            <string>Format:</string>
+           </property>
+           <property name="textFormat">
+            <enum>Qt::PlainText</enum>
+           </property>
+           <property name="textInteractionFlags">
+            <set>Qt::NoTextInteraction</set>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QComboBox" name="formatComboBox">
+           <item>
+            <property name="text">
+             <string>Uncompressed</string>
+            </property>
+           </item>
+           <item>
+            <property name="text">
+             <string>BC1 (DXT1)</string>
+            </property>
+           </item>
+           <item>
+            <property name="text">
+             <string>BC1a (DXT1a)</string>
+            </property>
+           </item>
+           <item>
+            <property name="text">
+             <string>BC2 (DXT3)</string>
+            </property>
+           </item>
+           <item>
+            <property name="text">
+             <string>BC3 (DXT5)</string>
+            </property>
+           </item>
+           <item>
+            <property name="text">
+             <string>BC4</string>
+            </property>
+           </item>
+           <item>
+            <property name="text">
+             <string>BC5</string>
+            </property>
+           </item>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item>
+        <widget class="QStackedWidget" name="formatOptions">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Preferred" vsizetype="Expanding">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="currentIndex">
+          <number>1</number>
+         </property>
+         <widget class="QWidget" name="page_colorweights">
+          <layout class="QVBoxLayout" name="verticalLayout_3">
+           <property name="leftMargin">
+            <number>0</number>
+           </property>
+           <property name="topMargin">
+            <number>8</number>
+           </property>
+           <property name="rightMargin">
+            <number>0</number>
+           </property>
+           <property name="bottomMargin">
+            <number>0</number>
+           </property>
+           <item>
+            <widget class="QGroupBox" name="groupBox_6">
+             <property name="sizePolicy">
+              <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
+               <horstretch>0</horstretch>
+               <verstretch>0</verstretch>
+              </sizepolicy>
+             </property>
+             <property name="title">
+              <string>Color Weights</string>
+             </property>
+             <property name="alignment">
+              <set>Qt::AlignHCenter</set>
+             </property>
+             <layout class="QVBoxLayout" name="_2">
+              <property name="topMargin">
+               <number>12</number>
+              </property>
+              <item>
+               <layout class="QHBoxLayout" name="_3">
+                <item>
+                 <widget class="QLabel" name="label_10">
+                  <property name="text">
+                   <string>Red</string>
+                  </property>
+                  <property name="buddy">
+                   <cstring>redSpinBox</cstring>
+                  </property>
+                 </widget>
+                </item>
+                <item>
+                 <widget class="QDoubleSpinBox" name="redSpinBox">
+                  <property name="maximum">
+                   <double>1.000000000000000</double>
+                  </property>
+                  <property name="singleStep">
+                   <double>0.050000000000000</double>
+                  </property>
+                  <property name="value">
+                   <double>1.000000000000000</double>
+                  </property>
+                 </widget>
+                </item>
+               </layout>
+              </item>
+              <item>
+               <layout class="QHBoxLayout" name="_4">
+                <item>
+                 <widget class="QLabel" name="label_11">
+                  <property name="text">
+                   <string>Green</string>
+                  </property>
+                  <property name="buddy">
+                   <cstring>greenSpinBox</cstring>
+                  </property>
+                 </widget>
+                </item>
+                <item>
+                 <widget class="QDoubleSpinBox" name="greenSpinBox">
+                  <property name="maximum">
+                   <double>1.000000000000000</double>
+                  </property>
+                  <property name="singleStep">
+                   <double>0.050000000000000</double>
+                  </property>
+                  <property name="value">
+                   <double>1.000000000000000</double>
+                  </property>
+                 </widget>
+                </item>
+               </layout>
+              </item>
+              <item>
+               <layout class="QHBoxLayout" name="_5">
+                <item>
+                 <widget class="QLabel" name="label_12">
+                  <property name="text">
+                   <string>Blue</string>
+                  </property>
+                  <property name="buddy">
+                   <cstring>blueSpinBox</cstring>
+                  </property>
+                 </widget>
+                </item>
+                <item>
+                 <widget class="QDoubleSpinBox" name="blueSpinBox">
+                  <property name="maximum">
+                   <double>1.000000000000000</double>
+                  </property>
+                  <property name="singleStep">
+                   <double>0.050000000000000</double>
+                  </property>
+                  <property name="value">
+                   <double>1.000000000000000</double>
+                  </property>
+                 </widget>
+                </item>
+               </layout>
+              </item>
+              <item>
+               <layout class="QHBoxLayout" name="_6">
+                <item>
+                 <widget class="QToolButton" name="uniformButton">
+                  <property name="text">
+                   <string>Uniform</string>
+                  </property>
+                  <property name="checkable">
+                   <bool>true</bool>
+                  </property>
+                  <property name="checked">
+                   <bool>true</bool>
+                  </property>
+                 </widget>
+                </item>
+                <item>
+                 <widget class="QToolButton" name="luminanceButton">
+                  <property name="text">
+                   <string>Luminance</string>
+                  </property>
+                  <property name="checkable">
+                   <bool>true</bool>
+                  </property>
+                 </widget>
+                </item>
+               </layout>
+              </item>
+             </layout>
+            </widget>
+           </item>
+          </layout>
+         </widget>
+         <widget class="QWidget" name="page_pixelformat">
+          <layout class="QVBoxLayout" name="verticalLayout_4">
+           <property name="spacing">
+            <number>1</number>
+           </property>
+           <property name="margin">
+            <number>0</number>
+           </property>
+           <item>
+            <layout class="QHBoxLayout" name="horizontalLayout_4">
+             <item>
+              <widget class="QLabel" name="label_4">
+               <property name="sizePolicy">
+                <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+                 <horstretch>0</horstretch>
+                 <verstretch>0</verstretch>
+                </sizepolicy>
+               </property>
+               <property name="maximumSize">
+                <size>
+                 <width>16777215</width>
+                 <height>24</height>
+                </size>
+               </property>
+               <property name="text">
+                <string>Pixel Format:</string>
+               </property>
+               <property name="textFormat">
+                <enum>Qt::PlainText</enum>
+               </property>
+               <property name="textInteractionFlags">
+                <set>Qt::NoTextInteraction</set>
+               </property>
+              </widget>
+             </item>
+             <item>
+              <widget class="QComboBox" name="pixelformatComboBox">
+               <property name="currentIndex">
+                <number>1</number>
+               </property>
+               <item>
+                <property name="text">
+                 <string>Custom</string>
+                </property>
+               </item>
+               <item>
+                <property name="text">
+                 <string>R8G8B8A8</string>
+                </property>
+               </item>
+               <item>
+                <property name="text">
+                 <string>R5G6B5</string>
+                </property>
+               </item>
+               <item>
+                <property name="text">
+                 <string>A1</string>
+                </property>
+               </item>
+              </widget>
+             </item>
+            </layout>
+           </item>
+           <item>
+            <layout class="QHBoxLayout" name="horizontalLayout_9">
+             <item>
+              <widget class="QLabel" name="label_7">
+               <property name="text">
+                <string>Color Type:</string>
+               </property>
+              </widget>
+             </item>
+             <item>
+              <widget class="QComboBox" name="comboBox">
+               <item>
+                <property name="text">
+                 <string>Fixed</string>
+                </property>
+               </item>
+               <item>
+                <property name="text">
+                 <string>Float</string>
+                </property>
+               </item>
+              </widget>
+             </item>
+            </layout>
+           </item>
+           <item>
+            <layout class="QHBoxLayout" name="horizontalLayout_5">
+             <item>
+              <widget class="QLabel" name="label">
+               <property name="text">
+                <string>Red Bits:</string>
+               </property>
+              </widget>
+             </item>
+             <item>
+              <widget class="QSpinBox" name="redbitSpinBox">
+               <property name="maximum">
+                <number>32</number>
+               </property>
+               <property name="value">
+                <number>8</number>
+               </property>
+              </widget>
+             </item>
+            </layout>
+           </item>
+           <item>
+            <layout class="QHBoxLayout" name="horizontalLayout_8">
+             <item>
+              <widget class="QLabel" name="label_2">
+               <property name="text">
+                <string>Green Bits:</string>
+               </property>
+              </widget>
+             </item>
+             <item>
+              <widget class="QSpinBox" name="greenbitSpinBox">
+               <property name="maximum">
+                <number>32</number>
+               </property>
+               <property name="value">
+                <number>8</number>
+               </property>
+              </widget>
+             </item>
+            </layout>
+           </item>
+           <item>
+            <layout class="QHBoxLayout" name="horizontalLayout_6">
+             <item>
+              <widget class="QLabel" name="label_5">
+               <property name="text">
+                <string>Blue Bits:</string>
+               </property>
+              </widget>
+             </item>
+             <item>
+              <widget class="QSpinBox" name="bluebitSpinBox">
+               <property name="maximum">
+                <number>32</number>
+               </property>
+               <property name="value">
+                <number>8</number>
+               </property>
+              </widget>
+             </item>
+            </layout>
+           </item>
+           <item>
+            <layout class="QHBoxLayout" name="horizontalLayout_7">
+             <item>
+              <widget class="QLabel" name="label_6">
+               <property name="text">
+                <string>Alpha Bits:</string>
+               </property>
+              </widget>
+             </item>
+             <item>
+              <widget class="QSpinBox" name="alphabitSpinBox">
+               <property name="maximum">
+                <number>32</number>
+               </property>
+               <property name="value">
+                <number>8</number>
+               </property>
+              </widget>
+             </item>
+            </layout>
+           </item>
+          </layout>
+         </widget>
+        </widget>
+       </item>
+       <item>
+        <widget class="QCheckBox" name="ditherColorCheckBox">
+         <property name="text">
+          <string>Dither Color</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QCheckBox" name="checkBox">
+         <property name="text">
+          <string>Dither Alpha</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <spacer name="verticalSpacer">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="page_resize">
+      <property name="geometry">
+       <rect>
+        <x>0</x>
+        <y>0</y>
+        <width>249</width>
+        <height>367</height>
+       </rect>
+      </property>
+      <attribute name="label">
+       <string>Resize Options</string>
+      </attribute>
+     </widget>
+     <widget class="QWidget" name="page_mipmap">
+      <property name="geometry">
+       <rect>
+        <x>0</x>
+        <y>0</y>
+        <width>241</width>
+        <height>357</height>
+       </rect>
+      </property>
+      <attribute name="label">
+       <string>Mipmap Options</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="verticalLayout_5">
+       <property name="spacing">
+        <number>2</number>
+       </property>
+       <property name="margin">
+        <number>6</number>
+       </property>
+       <item>
+        <widget class="QCheckBox" name="generateMipmapsCheckBox">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="text">
+          <string>Generate mipmaps</string>
+         </property>
+         <property name="checked">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <layout class="QHBoxLayout" name="_8">
+         <property name="spacing">
+          <number>1</number>
+         </property>
+         <item>
+          <widget class="QLabel" name="mipmapFilterLabel">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="maximumSize">
+            <size>
+             <width>16777215</width>
+             <height>26</height>
+            </size>
+           </property>
+           <property name="text">
+            <string>Filter:</string>
+           </property>
+           <property name="buddy">
+            <cstring>mipmapFilterComboBox</cstring>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QComboBox" name="mipmapFilterComboBox">
+           <property name="maximumSize">
+            <size>
+             <width>16777215</width>
+             <height>26</height>
+            </size>
+           </property>
+           <item>
+            <property name="text">
+             <string>Box</string>
+            </property>
+           </item>
+           <item>
+            <property name="text">
+             <string>Triangle</string>
+            </property>
+           </item>
+           <item>
+            <property name="text">
+             <string>Kaiser</string>
+            </property>
+           </item>
+          </widget>
+         </item>
+         <item>
+          <widget class="QToolButton" name="mipmapFilterSettings">
+           <property name="enabled">
+            <bool>false</bool>
+           </property>
+           <property name="autoFillBackground">
+            <bool>false</bool>
+           </property>
+           <property name="text">
+            <string>...</string>
+           </property>
+           <property name="toolButtonStyle">
+            <enum>Qt::ToolButtonTextOnly</enum>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item>
+        <layout class="QHBoxLayout" name="_9">
+         <item>
+          <widget class="QCheckBox" name="limitMipmapsCheckBox">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="text">
+            <string>Limit Mipmaps</string>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item>
+        <layout class="QHBoxLayout" name="horizontalLayout_10">
+         <item>
+          <spacer name="horizontalSpacer">
+           <property name="orientation">
+            <enum>Qt::Horizontal</enum>
+           </property>
+           <property name="sizeHint" stdset="0">
+            <size>
+             <width>40</width>
+             <height>20</height>
+            </size>
+           </property>
+          </spacer>
+         </item>
+         <item>
+          <widget class="QLabel" name="maxLevelLabel">
+           <property name="enabled">
+            <bool>false</bool>
+           </property>
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="text">
+            <string>&amp;Max Level:</string>
+           </property>
+           <property name="buddy">
+            <cstring>maxLevelSpinBox</cstring>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QSpinBox" name="maxLevelSpinBox">
+           <property name="enabled">
+            <bool>false</bool>
+           </property>
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="maximumSize">
+            <size>
+             <width>80</width>
+             <height>16777215</height>
+            </size>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item>
+        <spacer name="verticalSpacer_3">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+      </layout>
+     </widget>
+    </widget>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>CompressDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>CompressDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>