5 files changed, 6 insertions, 6 deletions
diff --git a/src/datavisualization/engine/shaders/surface_ES2.frag b/src/datavisualization/engine/shaders/surface_ES2.frag
index a9aec528..7f40ba4d 100644
--- a/src/datavisualization/engine/shaders/surface_ES2.frag
+++ b/src/datavisualization/engine/shaders/surface_ES2.frag
@@ -11,7 +11,7 @@ uniform highp float lightStrength;
 uniform highp float ambientStrength;
 
 void main() {
-    highp vec2 gradientUV = vec2(0.5, (coords_mdl.y + 1.0) / 2.0);
+    highp vec2 gradientUV = vec2(0.0, (coords_mdl.y + 1.001) / 2.0); // ~1000 pixel texture, we need a margin for 1/1000 rounding error
     highp vec3 materialDiffuseColor = texture2D(textureSampler, gradientUV).xyz;
     highp vec3 materialAmbientColor = vec3(ambientStrength, ambientStrength, ambientStrength) * materialDiffuseColor;
     highp vec3 materialSpecularColor = vec3(1.0, 1.0, 1.0);
diff --git a/src/datavisualization/engine/surface3dcontroller.cpp b/src/datavisualization/engine/surface3dcontroller.cpp
index c8823eb7..688747bb 100644
--- a/src/datavisualization/engine/surface3dcontroller.cpp
+++ b/src/datavisualization/engine/surface3dcontroller.cpp
@@ -142,7 +142,7 @@ bool Surface3DController::surfaceGrid()
 void Surface3DController::setGradient(const QLinearGradient &gradient)
 {
     m_userDefinedGradient = gradient;
-    m_userDefinedGradient.setStart(1, 1000);
+    m_userDefinedGradient.setStart(2, 1024);
     m_userDefinedGradient.setFinalStop(0, 0);
     m_changeTracker.gradientColorChanged = true;
     emitNeedRender();
diff --git a/src/datavisualization/engine/surface3drenderer.cpp b/src/datavisualization/engine/surface3drenderer.cpp
index 31da7af4..67ad66d4 100644
--- a/src/datavisualization/engine/surface3drenderer.cpp
+++ b/src/datavisualization/engine/surface3drenderer.cpp
@@ -1644,11 +1644,11 @@ void Surface3DRenderer::drawScene(GLuint defaultFboHandle)
 
 void Surface3DRenderer::updateSurfaceGradient(const QLinearGradient &gradient)
 {
-    QImage image(QSize(1, 1000), QImage::Format_RGB32);
+    QImage image(QSize(2, 1024), QImage::Format_RGB32);
     QPainter pmp(&image);
     pmp.setBrush(QBrush(gradient));
     pmp.setPen(Qt::NoPen);
-    pmp.drawRect(0, 0, 1, 1000);
+    pmp.drawRect(0, 0, 2, 1024);
 
     if (m_gradientTexture) {
         m_textureHelper->deleteTexture(&m_gradientTexture);
diff --git a/src/datavisualization/engine/theme.cpp b/src/datavisualization/engine/theme.cpp
index d9f2974a..387540b1 100644
--- a/src/datavisualization/engine/theme.cpp
+++ b/src/datavisualization/engine/theme.cpp
@@ -37,7 +37,7 @@ Theme::Theme()
       m_highlightBarColor(QColor(Qt::red)),
       m_highlightRowColor(QColor(Qt::darkRed)),
       m_highlightColumnColor(QColor(Qt::darkMagenta)),
-      m_surfaceGradient(QLinearGradient(1, 1000, 0, 0)),
+      m_surfaceGradient(QLinearGradient(2, 1024, 0, 0)),
       m_lightStrength(4.0f),
       m_ambientStrength(0.3f),
       m_highlightLightStrength(8.0f),
diff --git a/src/datavisualization/utils/utils.cpp b/src/datavisualization/utils/utils.cpp
index 947dbfba..eb74d1a3 100644
--- a/src/datavisualization/utils/utils.cpp
+++ b/src/datavisualization/utils/utils.cpp
@@ -29,7 +29,7 @@
 QT_DATAVISUALIZATION_BEGIN_NAMESPACE
 
 #define NUM_IN_POWER(y, x) for (;y<x;y<<=1)
-#define MIN_POWER 32
+#define MIN_POWER 2
 
 GLuint Utils::getNearestPowerOfTwo(GLuint value, GLuint &padding)
 {