Fix IBL shader

Implement DDS cubemap file reader to load the Cedar Bridge environment
cubemap file, and render IBL on core profile.

ACKNOWLEDGEMENTS.html

@@ -1297,3 +1297,8 @@ https://www.reddit.com/r/gamedev/comments/5iuf3h/i_am_writting_a_3d_monster_mode
     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     SOFTWARE.
 </pre>
+
+<h1>Greg Zaal</h1>
+<pre>
+    https://hdrihaven.com/hdri/?h=cedar_bridge
+</pre>

dust3d.pro

@@ -505,6 +505,9 @@ HEADERS += src/projectfacestonodes.h
 SOURCES += src/simulateclothmeshes.cpp
 HEADERS += src/simulateclothmeshes.h
 
+SOURCES += src/ddsfile.cpp
+HEADERS += src/ddsfile.h
+
 SOURCES += src/main.cpp
 
 HEADERS += src/version.h

resources.qrc

@@ -23,6 +23,8 @@
         <file>resources/heptagon.png</file>
         <file>resources/userdefined.png</file>
         <file>resources/checkuv.png</file>
+        <file>resources/cedar_bridge_irradiance.dds</file>
+        <file>resources/cedar_bridge_specular.dds</file>
         <file>shaders/default.vert</file>
         <file>shaders/default.frag</file>
         <file>shaders/default.core.vert</file>

shaders/default.core.frag

@@ -53,35 +53,39 @@
 // https://github.com/qt/qt3d/blob/5.11/src/extras/shaders/gl3/metalrough.inc.frag
 
 // Exposure correction
-highp float exposure;
+float exposure;
 // Gamma correction
-highp float gamma;
+float gamma;
 
-in highp vec3 vert;
+in vec3 vert;
-in highp vec3 vertRaw;
+in vec3 vertRaw;
-in highp vec3 vertNormal;
+in vec3 vertNormal;
-in highp vec3 vertColor;
+in vec3 vertColor;
-in highp vec2 vertTexCoord;
+in vec2 vertTexCoord;
-in highp float vertMetalness;
+in float vertMetalness;
-in highp float vertRoughness;
+in float vertRoughness;
-in highp vec3 cameraPos;
+in vec3 cameraPos;
-in highp vec3 firstLightPos;
+in vec3 firstLightPos;
-in highp vec3 secondLightPos;
+in vec3 secondLightPos;
-in highp vec3 thirdLightPos;
+in vec3 thirdLightPos;
-in highp float vertAlpha;
+in float vertAlpha;
-out highp vec4 fragColor;
+out vec4 fragColor;
-uniform highp vec3 lightPos;
+uniform vec3 lightPos;
-uniform highp sampler2D textureId;
+uniform sampler2D textureId;
-uniform highp int textureEnabled;
+uniform int textureEnabled;
-uniform highp sampler2D normalMapId;
+uniform sampler2D normalMapId;
-uniform highp int normalMapEnabled;
+uniform int normalMapEnabled;
-uniform highp sampler2D metalnessRoughnessAmbientOcclusionMapId;
+uniform sampler2D metalnessRoughnessAmbientOcclusionMapId;
-uniform highp int metalnessMapEnabled;
+uniform int metalnessMapEnabled;
-uniform highp int roughnessMapEnabled;
+uniform int roughnessMapEnabled;
-uniform highp int ambientOcclusionMapEnabled;
+uniform int ambientOcclusionMapEnabled;
-uniform highp int mousePickEnabled;
+uniform int mousePickEnabled;
-uniform highp vec3 mousePickTargetPosition;
+uniform vec3 mousePickTargetPosition;
-uniform highp float mousePickRadius;
+uniform float mousePickRadius;
+uniform samplerCube environmentIrradianceMapId;
+uniform int environmentIrradianceMapEnabled;
+uniform samplerCube environmentSpecularMapId;
+uniform int environmentSpecularMapEnabled;
 
 const int MAX_LIGHTS = 8;
 const int TYPE_POINT = 0;
@@ -89,51 +93,88 @@ const int TYPE_DIRECTIONAL = 1;
 const int TYPE_SPOT = 2;
 struct Light {
     int type;
-    highp vec3 position;
+    vec3 position;
-    highp vec3 color;
+    vec3 color;
-    highp float intensity;
+    float intensity;
-    highp vec3 direction;
+    vec3 direction;
-    highp float constantAttenuation;
+    float constantAttenuation;
-    highp float linearAttenuation;
+    float linearAttenuation;
-    highp float quadraticAttenuation;
+    float quadraticAttenuation;
-    highp float cutOffAngle;
+    float cutOffAngle;
 };
 int lightCount;
 Light lights[MAX_LIGHTS];
 
-highp float remapRoughness(const in highp float roughness)
+int mipLevelCount(const in samplerCube cube)
+{
+    int baseSize = textureSize(cube, 0).x;
+    int nMips = int(log2(float(baseSize > 0 ? baseSize : 1))) + 1;
+    return nMips;
+}
+
+float remapRoughness(const in float roughness)
 {
     // As per page 14 of
     // http://www.frostbite.com/wp-content/uploads/2014/11/course_notes_moving_frostbite_to_pbr.pdf
     // we remap the roughness to give a more perceptually linear response
     // of "bluriness" as a function of the roughness specified by the user.
     // r = roughness^2
-    highp float maxSpecPower;
+    float maxSpecPower;
-    highp float minRoughness;
+    float minRoughness;
     maxSpecPower = 999999.0;
     minRoughness = sqrt(2.0 / (maxSpecPower + 2.0));
     return max(roughness * roughness, minRoughness);
 }
 
-highp float normalDistribution(const in highp vec3 n, const in highp vec3 h, const in highp float alpha)
+float alphaToMipLevel(float alpha)
+{
+    float specPower = 2.0 / (alpha * alpha) - 2.0;
+
+    // We use the mip level calculation from Lys' default power drop, which in
+    // turn is a slight modification of that used in Marmoset Toolbag. See
+    // https://docs.knaldtech.com/doku.php?id=specular_lys for details.
+    // For now we assume a max specular power of 999999 which gives
+    // maxGlossiness = 1.
+    const float k0 = 0.00098;
+    const float k1 = 0.9921;
+    float glossiness = (pow(2.0, -10.0 / sqrt(specPower)) - k0) / k1;
+
+    // TODO: Optimize by doing this on CPU and set as
+    // uniform int environmentSpecularMapIdMipLevels say (if present in shader).
+    // Lookup the number of mips in the specular envmap
+    int mipLevels = mipLevelCount(environmentSpecularMapId);
+
+    // Offset of smallest miplevel we should use (corresponds to specular
+    // power of 1). I.e. in the 32x32 sized mip.
+    const float mipOffset = 5.0;
+
+    // The final factor is really 1 - g / g_max but as mentioned above g_max
+    // is 1 by definition here so we can avoid the division. If we make the
+    // max specular power for the spec map configurable, this will need to
+    // be handled properly.
+    float mipLevel = (mipLevels - 1.0 - mipOffset) * (1.0 - glossiness);
+    return mipLevel;
+}
+
+float normalDistribution(const in vec3 n, const in vec3 h, const in float alpha)
 {
     // Blinn-Phong approximation - see
     // http://graphicrants.blogspot.co.uk/2013/08/specular-brdf-reference.html
-    highp float specPower = 2.0 / (alpha * alpha) - 2.0;
+    float specPower = 2.0 / (alpha * alpha) - 2.0;
     return (specPower + 2.0) / (2.0 * 3.14159) * pow(max(dot(n, h), 0.0), specPower);
 }
 
-highp vec3 fresnelFactor(const in highp vec3 color, const in highp float cosineFactor)
+vec3 fresnelFactor(const in vec3 color, const in float cosineFactor)
 {
     // Calculate the Fresnel effect value
-    highp vec3 f = color;
+    vec3 f = color;
-    highp vec3 F = f + (1.0 - f) * pow(1.0 - cosineFactor, 5.0);
+    vec3 F = f + (1.0 - f) * pow(1.0 - cosineFactor, 5.0);
     return clamp(F, f, vec3(1.0));
 }
 
-highp float geometricModel(const in highp float lDotN,
+float geometricModel(const in float lDotN,
-                     const in highp float vDotN,
+                     const in float vDotN,
-                     const in highp vec3 h)
+                     const in vec3 h)
 {
     // Implicit geometric model (equal to denominator in specular model).
     // This currently assumes that there is no attenuation by geometric shadowing or
@@ -141,50 +182,50 @@ highp float geometricModel(const in highp float lDotN,
     return lDotN * vDotN;
 }
 
-highp vec3 specularModel(const in highp vec3 F0,
+vec3 specularModel(const in vec3 F0,
-                   const in highp float sDotH,
+                   const in float sDotH,
-                   const in highp float sDotN,
+                   const in float sDotN,
-                   const in highp float vDotN,
+                   const in float vDotN,
-                   const in highp vec3 n,
+                   const in vec3 n,
-                   const in highp vec3 h)
+                   const in vec3 h)
 {
     // Clamp sDotN and vDotN to small positive value to prevent the
     // denominator in the reflection equation going to infinity. Balance this
     // by using the clamped values in the geometric factor function to
     // avoid ugly seams in the specular lighting.
-    highp float sDotNPrime = max(sDotN, 0.001);
+    float sDotNPrime = max(sDotN, 0.001);
-    highp float vDotNPrime = max(vDotN, 0.001);
+    float vDotNPrime = max(vDotN, 0.001);
 
-    highp vec3 F = fresnelFactor(F0, sDotH);
+    vec3 F = fresnelFactor(F0, sDotH);
-    highp float G = geometricModel(sDotNPrime, vDotNPrime, h);
+    float G = geometricModel(sDotNPrime, vDotNPrime, h);
 
-    highp vec3 cSpec = F * G / (4.0 * sDotNPrime * vDotNPrime);
+    vec3 cSpec = F * G / (4.0 * sDotNPrime * vDotNPrime);
     return clamp(cSpec, vec3(0.0), vec3(1.0));
 }
 
-highp vec3 pbrModel(const in int lightIndex,
+vec3 pbrModel(const in int lightIndex,
-              const in highp vec3 wPosition,
+              const in vec3 wPosition,
-              const in highp vec3 wNormal,
+              const in vec3 wNormal,
-              const in highp vec3 wView,
+              const in vec3 wView,
-              const in highp vec3 baseColor,
+              const in vec3 baseColor,
-              const in highp float metalness,
+              const in float metalness,
-              const in highp float alpha,
+              const in float alpha,
-              const in highp float ambientOcclusion)
+              const in float ambientOcclusion)
 {
     // Calculate some useful quantities
-    highp vec3 n = wNormal;
+    vec3 n = wNormal;
-    highp vec3 s = vec3(0.0);
+    vec3 s = vec3(0.0);
-    highp vec3 v = wView;
+    vec3 v = wView;
-    highp vec3 h = vec3(0.0);
+    vec3 h = vec3(0.0);
 
-    highp float vDotN = dot(v, n);
+    float vDotN = dot(v, n);
-    highp float sDotN = 0.0;
+    float sDotN = 0.0;
-    highp float sDotH = 0.0;
+    float sDotH = 0.0;
-    highp float att = 1.0;
+    float att = 1.0;
 
     if (lights[lightIndex].type != TYPE_DIRECTIONAL) {
         // Point and Spot lights
-        highp vec3 sUnnormalized = vec3(lights[lightIndex].position) - wPosition;
+        vec3 sUnnormalized = vec3(lights[lightIndex].position) - wPosition;
         s = normalize(sUnnormalized);
 
         // Calculate the attenuation factor
@@ -193,7 +234,7 @@ highp vec3 pbrModel(const in int lightIndex,
             if (lights[lightIndex].constantAttenuation != 0.0
              || lights[lightIndex].linearAttenuation != 0.0
              || lights[lightIndex].quadraticAttenuation != 0.0) {
-                highp float dist = length(sUnnormalized);
+                float dist = length(sUnnormalized);
                 att = 1.0 / (lights[lightIndex].constantAttenuation +
                              lights[lightIndex].linearAttenuation * dist +
                              lights[lightIndex].quadraticAttenuation * dist * dist);
@@ -217,22 +258,22 @@ highp vec3 pbrModel(const in int lightIndex,
     sDotH = dot(s, h);
 
     // Calculate diffuse component
-    highp vec3 diffuseColor = (1.0 - metalness) * baseColor * lights[lightIndex].color;
+    vec3 diffuseColor = (1.0 - metalness) * baseColor * lights[lightIndex].color;
-    highp vec3 diffuse = diffuseColor * max(sDotN, 0.0) / 3.14159;
+    vec3 diffuse = diffuseColor * max(sDotN, 0.0) / 3.14159;
 
     // Calculate specular component
-    highp vec3 dielectricColor = vec3(0.04);
+    vec3 dielectricColor = vec3(0.04);
-    highp vec3 F0 = mix(dielectricColor, baseColor, metalness);
+    vec3 F0 = mix(dielectricColor, baseColor, metalness);
-    highp vec3 specularFactor = vec3(0.0);
+    vec3 specularFactor = vec3(0.0);
     if (sDotN > 0.0) {
         specularFactor = specularModel(F0, sDotH, sDotN, vDotN, n, h);
         specularFactor *= normalDistribution(n, h, alpha);
     }
-    highp vec3 specularColor = lights[lightIndex].color;
+    vec3 specularColor = lights[lightIndex].color;
-    highp vec3 specular = specularColor * specularFactor;
+    vec3 specular = specularColor * specularFactor;
 
     // Blend between diffuse and specular to conserver energy
-    highp vec3 color = att * lights[lightIndex].intensity * (specular + diffuse * (vec3(1.0) - specular));
+    vec3 color = att * lights[lightIndex].intensity * (specular + diffuse * (vec3(1.0) - specular));
 
     // Reduce by ambient occlusion amount
     color *= ambientOcclusion;
@@ -240,28 +281,98 @@ highp vec3 pbrModel(const in int lightIndex,
     return color;
 }
 
-highp vec3 toneMap(const in highp vec3 c)
+vec3 pbrIblModel(const in vec3 wNormal,
+                 const in vec3 wView,
+                 const in vec3 baseColor,
+                 const in float metalness,
+                 const in float alpha,
+                 const in float ambientOcclusion)
+{
+    // Calculate reflection direction of view vector about surface normal
+    // vector in world space. This is used in the fragment shader to sample
+    // from the environment textures for a light source. This is equivalent
+    // to the l vector for punctual light sources. Armed with this, calculate
+    // the usual factors needed
+    vec3 n = wNormal;
+    vec3 l = reflect(-wView, n);
+    vec3 v = wView;
+    vec3 h = normalize(l + v);
+    float vDotN = dot(v, n);
+    float lDotN = dot(l, n);
+    float lDotH = dot(l, h);
+
+    // Calculate diffuse component
+    vec3 diffuseColor = (1.0 - metalness) * baseColor;
+    vec3 diffuse = diffuseColor * texture(environmentIrradianceMapId, l).rgb;
+
+    // Calculate specular component
+    vec3 dielectricColor = vec3(0.04);
+    vec3 F0 = mix(dielectricColor, baseColor, metalness);
+    vec3 specularFactor = specularModel(F0, lDotH, lDotN, vDotN, n, h);
+
+    float lod = alphaToMipLevel(alpha);
+//#define DEBUG_SPECULAR_LODS
+#ifdef DEBUG_SPECULAR_LODS
+    if (lod > 7.0)
+        return vec3(1.0, 0.0, 0.0);
+    else if (lod > 6.0)
+        return vec3(1.0, 0.333, 0.0);
+    else if (lod > 5.0)
+        return vec3(1.0, 1.0, 0.0);
+    else if (lod > 4.0)
+        return vec3(0.666, 1.0, 0.0);
+    else if (lod > 3.0)
+        return vec3(0.0, 1.0, 0.666);
+    else if (lod > 2.0)
+        return vec3(0.0, 0.666, 1.0);
+    else if (lod > 1.0)
+        return vec3(0.0, 0.0, 1.0);
+    else if (lod > 0.0)
+        return vec3(1.0, 0.0, 1.0);
+#endif
+    vec3 specularSkyColor = textureLod(environmentSpecularMapId, l, lod).rgb;
+    vec3 specular = specularSkyColor * specularFactor;
+
+    // Blend between diffuse and specular to conserve energy
+    vec3 color = specular + diffuse * (vec3(1.0) - specularFactor);
+
+    // Reduce by ambient occlusion amount
+    color *= ambientOcclusion;
+
+    return color;
+}
+
+vec3 toneMap(const in vec3 c)
 {
     return c / (c + vec3(1.0));
 }
 
-highp vec3 gammaCorrect(const in highp vec3 color)
+vec3 gammaCorrect(const in vec3 color)
 {
     return pow(color, vec3(1.0 / gamma));
 }
 
-highp vec4 metalRoughFunction(const in highp vec4 baseColor,
+vec4 metalRoughFunction(const in vec4 baseColor,
-                        const in highp float metalness,
+                        const in float metalness,
-                        const in highp float roughness,
+                        const in float roughness,
-                        const in highp float ambientOcclusion,
+                        const in float ambientOcclusion,
-                        const in highp vec3 worldPosition,
+                        const in vec3 worldPosition,
-                        const in highp vec3 worldView,
+                        const in vec3 worldView,
-                        const in highp vec3 worldNormal)
+                        const in vec3 worldNormal)
 {
-    highp vec3 cLinear = vec3(0.0);
+    vec3 cLinear = vec3(0.0);
 
     // Remap roughness for a perceptually more linear correspondence
-    highp float alpha = remapRoughness(roughness);
+    float alpha = remapRoughness(roughness);
+    
+    if (environmentIrradianceMapEnabled == 1) {
+        cLinear += pbrIblModel(worldNormal,
+            worldView,
+            baseColor.rgb,
+            metalness,
+            alpha,
+            ambientOcclusion);
+    }
     
     for (int i = 0; i < lightCount; ++i) {
         cLinear += pbrModel(i,
@@ -278,10 +389,10 @@ highp vec4 metalRoughFunction(const in highp vec4 baseColor,
     cLinear *= pow(2.0, exposure);
 
     // Apply simple (Reinhard) tonemap transform to get into LDR range [0, 1]
-    highp vec3 cToneMapped = toneMap(cLinear);
+    vec3 cToneMapped = toneMap(cLinear);
 
     // Apply gamma correction prior to display
-    highp vec3 cGamma = gammaCorrect(cToneMapped);
+    vec3 cGamma = gammaCorrect(cToneMapped);
 
     return vec4(cGamma, baseColor.a);
 }
@@ -323,10 +434,10 @@ void main()
     lights[2].linearAttenuation = 0.0;
     lights[2].quadraticAttenuation = 0.0;
 
-    highp vec3 color = vertColor;
+    vec3 color = vertColor;
-    highp float alpha = vertAlpha;
+    float alpha = vertAlpha;
     if (textureEnabled == 1) {
-        highp vec4 textColor = texture(textureId, vertTexCoord);
+        vec4 textColor = texture(textureId, vertTexCoord);
         color = textColor.rgb;
         alpha = textColor.a;
     }
@@ -337,7 +448,7 @@ void main()
     }
     color = pow(color, vec3(gamma));
 
-    highp vec3 normal = vertNormal;
+    vec3 normal = vertNormal;
     if (normalMapEnabled == 1) {
         normal = texture(normalMapId, vertTexCoord).rgb;
         normal = normalize(normal * 2.0 - 1.0);
@@ -347,23 +458,25 @@ void main()
     // Green: Roughness
     // Blue: Metallic
 
-    highp float metalness = vertMetalness;
+    float metalness = vertMetalness;
     if (metalnessMapEnabled == 1) {
         metalness = texture(metalnessRoughnessAmbientOcclusionMapId, vertTexCoord).b;
     }
 
-    highp float roughness = vertRoughness;
+    float roughness = vertRoughness;
     if (roughnessMapEnabled == 1) {
         roughness = texture(metalnessRoughnessAmbientOcclusionMapId, vertTexCoord).g;
     }
 
-    highp float ambientOcclusion = 1.0;
+    float ambientOcclusion = 1.0;
     if (ambientOcclusionMapEnabled == 1) {
         ambientOcclusion = texture(metalnessRoughnessAmbientOcclusionMapId, vertTexCoord).r;
     }
     
+    if (environmentIrradianceMapEnabled != 1) {
         roughness = min(0.99, roughness);
         metalness = min(0.99, metalness);
+    }
 
     fragColor = metalRoughFunction(vec4(color, alpha),
                                       metalness,

shaders/default.core.vert

@@ -1,29 +1,29 @@
 #version 330
-layout(location = 0) in highp vec4 vertex;
+layout(location = 0) in vec4 vertex;
-layout(location = 1) in highp vec3 normal;
+layout(location = 1) in vec3 normal;
-layout(location = 2) in highp vec3 color;
+layout(location = 2) in vec3 color;
-layout(location = 3) in highp vec2 texCoord;
+layout(location = 3) in vec2 texCoord;
-layout(location = 4) in highp float metalness;
+layout(location = 4) in float metalness;
-layout(location = 5) in highp float roughness;
+layout(location = 5) in float roughness;
-layout(location = 6) in highp vec3 tangent;
+layout(location = 6) in vec3 tangent;
-layout(location = 7) in highp float alpha;
+layout(location = 7) in float alpha;
-out highp vec3 vert;
+out vec3 vert;
-out highp vec3 vertRaw;
+out vec3 vertRaw;
-out highp vec3 vertNormal;
+out vec3 vertNormal;
-out highp vec3 vertColor;
+out vec3 vertColor;
-out highp vec2 vertTexCoord;
+out vec2 vertTexCoord;
-out highp float vertMetalness;
+out float vertMetalness;
-out highp float vertRoughness;
+out float vertRoughness;
-out highp vec3 cameraPos;
+out vec3 cameraPos;
-out highp vec3 firstLightPos;
+out vec3 firstLightPos;
-out highp vec3 secondLightPos;
+out vec3 secondLightPos;
-out highp vec3 thirdLightPos;
+out vec3 thirdLightPos;
-out highp float vertAlpha;
+out float vertAlpha;
-uniform highp mat4 projectionMatrix;
+uniform mat4 projectionMatrix;
-uniform highp mat4 modelMatrix;
+uniform mat4 modelMatrix;
-uniform highp mat3 normalMatrix;
+uniform mat3 normalMatrix;
-uniform highp mat4 viewMatrix;
+uniform mat4 viewMatrix;
-uniform highp int normalMapEnabled;
+uniform int normalMapEnabled;
 
 mat3 transpose(mat3 m) 
 {

shaders/default.frag

@@ -52,34 +52,34 @@
 // https://github.com/qt/qt3d/blob/5.11/src/extras/shaders/gl3/metalrough.inc.frag
 
 // Exposure correction
-highp float exposure;
+float exposure;
 // Gamma correction
-highp float gamma;
+float gamma;
 
-varying highp vec3 vert;
+varying vec3 vert;
-varying highp vec3 vertRaw;
+varying vec3 vertRaw;
-varying highp vec3 vertNormal;
+varying vec3 vertNormal;
-varying highp vec3 vertColor;
+varying vec3 vertColor;
-varying highp vec2 vertTexCoord;
+varying vec2 vertTexCoord;
-varying highp float vertMetalness;
+varying float vertMetalness;
-varying highp float vertRoughness;
+varying float vertRoughness;
-varying highp vec3 cameraPos;
+varying vec3 cameraPos;
-varying highp vec3 firstLightPos;
+varying vec3 firstLightPos;
-varying highp vec3 secondLightPos;
+varying vec3 secondLightPos;
-varying highp vec3 thirdLightPos;
+varying vec3 thirdLightPos;
-varying highp float vertAlpha;
+varying float vertAlpha;
-uniform highp vec3 lightPos;
+uniform vec3 lightPos;
-uniform highp sampler2D textureId;
+uniform sampler2D textureId;
-uniform highp int textureEnabled;
+uniform int textureEnabled;
-uniform highp sampler2D normalMapId;
+uniform sampler2D normalMapId;
-uniform highp int normalMapEnabled;
+uniform int normalMapEnabled;
-uniform highp sampler2D metalnessRoughnessAmbientOcclusionMapId;
+uniform sampler2D metalnessRoughnessAmbientOcclusionMapId;
-uniform highp int metalnessMapEnabled;
+uniform int metalnessMapEnabled;
-uniform highp int roughnessMapEnabled;
+uniform int roughnessMapEnabled;
-uniform highp int ambientOcclusionMapEnabled;
+uniform int ambientOcclusionMapEnabled;
-uniform highp int mousePickEnabled;
+uniform int mousePickEnabled;
-uniform highp vec3 mousePickTargetPosition;
+uniform vec3 mousePickTargetPosition;
-uniform highp float mousePickRadius;
+uniform float mousePickRadius;
 
 const int MAX_LIGHTS = 8;
 const int TYPE_POINT = 0;
@@ -87,51 +87,51 @@ const int TYPE_DIRECTIONAL = 1;
 const int TYPE_SPOT = 2;
 struct Light {
     int type;
-    highp vec3 position;
+    vec3 position;
-    highp vec3 color;
+    vec3 color;
-    highp float intensity;
+    float intensity;
-    highp vec3 direction;
+    vec3 direction;
-    highp float constantAttenuation;
+    float constantAttenuation;
-    highp float linearAttenuation;
+    float linearAttenuation;
-    highp float quadraticAttenuation;
+    float quadraticAttenuation;
-    highp float cutOffAngle;
+    float cutOffAngle;
 };
 int lightCount;
 Light lights[MAX_LIGHTS];
 
-highp float remapRoughness(const in highp float roughness)
+float remapRoughness(const in float roughness)
 {
     // As per page 14 of
     // http://www.frostbite.com/wp-content/uploads/2014/11/course_notes_moving_frostbite_to_pbr.pdf
     // we remap the roughness to give a more perceptually linear response
     // of "bluriness" as a function of the roughness specified by the user.
     // r = roughness^2
-    highp float maxSpecPower;
+    float maxSpecPower;
-    highp float minRoughness;
+    float minRoughness;
     maxSpecPower = 999999.0;
     minRoughness = sqrt(2.0 / (maxSpecPower + 2.0));
     return max(roughness * roughness, minRoughness);
 }
 
-highp float normalDistribution(const in highp vec3 n, const in highp vec3 h, const in highp float alpha)
+float normalDistribution(const in vec3 n, const in vec3 h, const in float alpha)
 {
     // Blinn-Phong approximation - see
     // http://graphicrants.blogspot.co.uk/2013/08/specular-brdf-reference.html
-    highp float specPower = 2.0 / (alpha * alpha) - 2.0;
+    float specPower = 2.0 / (alpha * alpha) - 2.0;
     return (specPower + 2.0) / (2.0 * 3.14159) * pow(max(dot(n, h), 0.0), specPower);
 }
 
-highp vec3 fresnelFactor(const in highp vec3 color, const in highp float cosineFactor)
+vec3 fresnelFactor(const in vec3 color, const in float cosineFactor)
 {
     // Calculate the Fresnel effect value
-    highp vec3 f = color;
+    vec3 f = color;
-    highp vec3 F = f + (1.0 - f) * pow(1.0 - cosineFactor, 5.0);
+    vec3 F = f + (1.0 - f) * pow(1.0 - cosineFactor, 5.0);
     return clamp(F, f, vec3(1.0));
 }
 
-highp float geometricModel(const in highp float lDotN,
+float geometricModel(const in float lDotN,
-                     const in highp float vDotN,
+                     const in float vDotN,
-                     const in highp vec3 h)
+                     const in vec3 h)
 {
     // Implicit geometric model (equal to denominator in specular model).
     // This currently assumes that there is no attenuation by geometric shadowing or
@@ -139,50 +139,50 @@ highp float geometricModel(const in highp float lDotN,
     return lDotN * vDotN;
 }
 
-highp vec3 specularModel(const in highp vec3 F0,
+vec3 specularModel(const in vec3 F0,
-                   const in highp float sDotH,
+                   const in float sDotH,
-                   const in highp float sDotN,
+                   const in float sDotN,
-                   const in highp float vDotN,
+                   const in float vDotN,
-                   const in highp vec3 n,
+                   const in vec3 n,
-                   const in highp vec3 h)
+                   const in vec3 h)
 {
     // Clamp sDotN and vDotN to small positive value to prevent the
     // denominator in the reflection equation going to infinity. Balance this
     // by using the clamped values in the geometric factor function to
     // avoid ugly seams in the specular lighting.
-    highp float sDotNPrime = max(sDotN, 0.001);
+    float sDotNPrime = max(sDotN, 0.001);
-    highp float vDotNPrime = max(vDotN, 0.001);
+    float vDotNPrime = max(vDotN, 0.001);
 
-    highp vec3 F = fresnelFactor(F0, sDotH);
+    vec3 F = fresnelFactor(F0, sDotH);
-    highp float G = geometricModel(sDotNPrime, vDotNPrime, h);
+    float G = geometricModel(sDotNPrime, vDotNPrime, h);
 
-    highp vec3 cSpec = F * G / (4.0 * sDotNPrime * vDotNPrime);
+    vec3 cSpec = F * G / (4.0 * sDotNPrime * vDotNPrime);
     return clamp(cSpec, vec3(0.0), vec3(1.0));
 }
 
-highp vec3 pbrModel(const in int lightIndex,
+vec3 pbrModel(const in int lightIndex,
-              const in highp vec3 wPosition,
+              const in vec3 wPosition,
-              const in highp vec3 wNormal,
+              const in vec3 wNormal,
-              const in highp vec3 wView,
+              const in vec3 wView,
-              const in highp vec3 baseColor,
+              const in vec3 baseColor,
-              const in highp float metalness,
+              const in float metalness,
-              const in highp float alpha,
+              const in float alpha,
-              const in highp float ambientOcclusion)
+              const in float ambientOcclusion)
 {
     // Calculate some useful quantities
-    highp vec3 n = wNormal;
+    vec3 n = wNormal;
-    highp vec3 s = vec3(0.0);
+    vec3 s = vec3(0.0);
-    highp vec3 v = wView;
+    vec3 v = wView;
-    highp vec3 h = vec3(0.0);
+    vec3 h = vec3(0.0);
 
-    highp float vDotN = dot(v, n);
+    float vDotN = dot(v, n);
-    highp float sDotN = 0.0;
+    float sDotN = 0.0;
-    highp float sDotH = 0.0;
+    float sDotH = 0.0;
-    highp float att = 1.0;
+    float att = 1.0;
 
     if (lights[lightIndex].type != TYPE_DIRECTIONAL) {
         // Point and Spot lights
-        highp vec3 sUnnormalized = vec3(lights[lightIndex].position) - wPosition;
+        vec3 sUnnormalized = vec3(lights[lightIndex].position) - wPosition;
         s = normalize(sUnnormalized);
 
         // Calculate the attenuation factor
@@ -191,7 +191,7 @@ highp vec3 pbrModel(const in int lightIndex,
             if (lights[lightIndex].constantAttenuation != 0.0
              || lights[lightIndex].linearAttenuation != 0.0
              || lights[lightIndex].quadraticAttenuation != 0.0) {
-                highp float dist = length(sUnnormalized);
+                float dist = length(sUnnormalized);
                 att = 1.0 / (lights[lightIndex].constantAttenuation +
                              lights[lightIndex].linearAttenuation * dist +
                              lights[lightIndex].quadraticAttenuation * dist * dist);
@@ -215,22 +215,22 @@ highp vec3 pbrModel(const in int lightIndex,
     sDotH = dot(s, h);
 
     // Calculate diffuse component
-    highp vec3 diffuseColor = (1.0 - metalness) * baseColor * lights[lightIndex].color;
+    vec3 diffuseColor = (1.0 - metalness) * baseColor * lights[lightIndex].color;
-    highp vec3 diffuse = diffuseColor * max(sDotN, 0.0) / 3.14159;
+    vec3 diffuse = diffuseColor * max(sDotN, 0.0) / 3.14159;
 
     // Calculate specular component
-    highp vec3 dielectricColor = vec3(0.04);
+    vec3 dielectricColor = vec3(0.04);
-    highp vec3 F0 = mix(dielectricColor, baseColor, metalness);
+    vec3 F0 = mix(dielectricColor, baseColor, metalness);
-    highp vec3 specularFactor = vec3(0.0);
+    vec3 specularFactor = vec3(0.0);
     if (sDotN > 0.0) {
         specularFactor = specularModel(F0, sDotH, sDotN, vDotN, n, h);
         specularFactor *= normalDistribution(n, h, alpha);
     }
-    highp vec3 specularColor = lights[lightIndex].color;
+    vec3 specularColor = lights[lightIndex].color;
-    highp vec3 specular = specularColor * specularFactor;
+    vec3 specular = specularColor * specularFactor;
 
     // Blend between diffuse and specular to conserver energy
-    highp vec3 color = att * lights[lightIndex].intensity * (specular + diffuse * (vec3(1.0) - specular));
+    vec3 color = att * lights[lightIndex].intensity * (specular + diffuse * (vec3(1.0) - specular));
 
     // Reduce by ambient occlusion amount
     color *= ambientOcclusion;
@@ -238,28 +238,28 @@ highp vec3 pbrModel(const in int lightIndex,
     return color;
 }
 
-highp vec3 toneMap(const in highp vec3 c)
+vec3 toneMap(const in vec3 c)
 {
     return c / (c + vec3(1.0));
 }
 
-highp vec3 gammaCorrect(const in highp vec3 color)
+vec3 gammaCorrect(const in vec3 color)
 {
     return pow(color, vec3(1.0 / gamma));
 }
 
-highp vec4 metalRoughFunction(const in highp vec4 baseColor,
+vec4 metalRoughFunction(const in vec4 baseColor,
-                        const in highp float metalness,
+                        const in float metalness,
-                        const in highp float roughness,
+                        const in float roughness,
-                        const in highp float ambientOcclusion,
+                        const in float ambientOcclusion,
-                        const in highp vec3 worldPosition,
+                        const in vec3 worldPosition,
-                        const in highp vec3 worldView,
+                        const in vec3 worldView,
-                        const in highp vec3 worldNormal)
+                        const in vec3 worldNormal)
 {
-    highp vec3 cLinear = vec3(0.0);
+    vec3 cLinear = vec3(0.0);
 
     // Remap roughness for a perceptually more linear correspondence
-    highp float alpha = remapRoughness(roughness);
+    float alpha = remapRoughness(roughness);
 
     for (int i = 0; i < lightCount; ++i) {
         cLinear += pbrModel(i,
@@ -276,10 +276,10 @@ highp vec4 metalRoughFunction(const in highp vec4 baseColor,
     cLinear *= pow(2.0, exposure);
 
     // Apply simple (Reinhard) tonemap transform to get into LDR range [0, 1]
-    highp vec3 cToneMapped = toneMap(cLinear);
+    vec3 cToneMapped = toneMap(cLinear);
 
     // Apply gamma correction prior to display
-    highp vec3 cGamma = gammaCorrect(cToneMapped);
+    vec3 cGamma = gammaCorrect(cToneMapped);
 
     return vec4(cGamma, baseColor.a);
 }
@@ -321,10 +321,10 @@ void main()
     lights[2].linearAttenuation = 0.0;
     lights[2].quadraticAttenuation = 0.0;
 
-    highp vec3 color = vertColor;
+    vec3 color = vertColor;
-    highp float alpha = vertAlpha;
+    float alpha = vertAlpha;
     if (textureEnabled == 1) {
-        highp vec4 textColor = texture2D(textureId, vertTexCoord);
+        vec4 textColor = texture2D(textureId, vertTexCoord);
         color = textColor.rgb;
         alpha = textColor.a;
     }
@@ -335,7 +335,7 @@ void main()
     }
     color = pow(color, vec3(gamma));
 
-    highp vec3 normal = vertNormal;
+    vec3 normal = vertNormal;
     if (normalMapEnabled == 1) {
         normal = texture2D(normalMapId, vertTexCoord).rgb;
         normal = normalize(normal * 2.0 - 1.0);
@@ -345,17 +345,17 @@ void main()
     // Green: Roughness
     // Blue: Metallic
 
-    highp float metalness = vertMetalness;
+    float metalness = vertMetalness;
     if (metalnessMapEnabled == 1) {
         metalness = texture2D(metalnessRoughnessAmbientOcclusionMapId, vertTexCoord).b;
     }
 
-    highp float roughness = vertRoughness;
+    float roughness = vertRoughness;
     if (roughnessMapEnabled == 1) {
         roughness = texture2D(metalnessRoughnessAmbientOcclusionMapId, vertTexCoord).g;
     }
 
-    highp float ambientOcclusion = 1.0;
+    float ambientOcclusion = 1.0;
     if (ambientOcclusionMapEnabled == 1) {
         ambientOcclusion = texture2D(metalnessRoughnessAmbientOcclusionMapId, vertTexCoord).r;
     }

shaders/default.vert

@@ -1,28 +1,28 @@
-attribute highp vec4 vertex;
+attribute vec4 vertex;
-attribute highp vec3 normal;
+attribute vec3 normal;
-attribute highp vec3 color;
+attribute vec3 color;
-attribute highp vec2 texCoord;
+attribute vec2 texCoord;
-attribute highp float metalness;
+attribute float metalness;
-attribute highp float roughness;
+attribute float roughness;
-attribute highp vec3 tangent;
+attribute vec3 tangent;
-attribute highp float alpha;
+attribute float alpha;
-varying highp vec3 vert;
+varying vec3 vert;
-varying highp vec3 vertRaw;
+varying vec3 vertRaw;
-varying highp vec3 vertNormal;
+varying vec3 vertNormal;
-varying highp vec3 vertColor;
+varying vec3 vertColor;
-varying highp vec2 vertTexCoord;
+varying vec2 vertTexCoord;
-varying highp float vertMetalness;
+varying float vertMetalness;
-varying highp float vertRoughness;
+varying float vertRoughness;
-varying highp vec3 cameraPos;
+varying vec3 cameraPos;
-varying highp vec3 firstLightPos;
+varying vec3 firstLightPos;
-varying highp vec3 secondLightPos;
+varying vec3 secondLightPos;
-varying highp vec3 thirdLightPos;
+varying vec3 thirdLightPos;
-varying highp float vertAlpha;
+varying float vertAlpha;
-uniform highp mat4 projectionMatrix;
+uniform mat4 projectionMatrix;
-uniform highp mat4 modelMatrix;
+uniform mat4 modelMatrix;
-uniform highp mat3 normalMatrix;
+uniform mat3 normalMatrix;
-uniform highp mat4 viewMatrix;
+uniform mat4 viewMatrix;
-uniform highp int normalMapEnabled;
+uniform int normalMapEnabled;
 
 mat3 transpose(mat3 m) 
 {

src/ddsfile.cpp

@@ -0,0 +1,523 @@
+#include <QtGlobal>
+#include <QFile>
+#include <QDebug>
+#include <QtEndian>
+#include <QByteArray>
+#include <QOpenGLPixelTransferOptions>
+#include "ddsfile.h"
+
+#ifndef _WIN32
+typedef quint32 DWORD;
+typedef quint32 UINT;
+#endif
+
+// DDS data struct copy from
+// https://docs.microsoft.com/en-us/windows/win32/direct3ddds/dx-graphics-dds-pguide
+
+typedef struct {
+    DWORD dwSize;
+    DWORD dwFlags;
+    DWORD dwFourCC;
+    DWORD dwRGBBitCount;
+    DWORD dwRBitMask;
+    DWORD dwGBitMask;
+    DWORD dwBBitMask;
+    DWORD dwABitMask;
+} DDS_PIXELFORMAT;
+
+typedef enum {
+    DDSCAPS2_CUBEMAP = 0x200,
+    DDSCAPS2_CUBEMAP_POSITIVEX = 0x400,
+    DDSCAPS2_CUBEMAP_NEGATIVEX = 0x800,
+    DDSCAPS2_CUBEMAP_POSITIVEY = 0x1000,
+    DDSCAPS2_CUBEMAP_NEGATIVEY = 0x2000,
+    DDSCAPS2_CUBEMAP_POSITIVEZ = 0x4000,
+    DDSCAPS2_CUBEMAP_NEGATIVEZ = 0x8000,
+    DDSCAPS2_VOLUME = 0x200000
+} DDS_CAPS2_FLAGS;
+
+typedef struct {
+    DWORD           dwSize;
+    DWORD           dwFlags;
+    DWORD           dwHeight;
+    DWORD           dwWidth;
+    DWORD           dwPitchOrLinearSize;
+    DWORD           dwDepth;
+    DWORD           dwMipMapCount;
+    DWORD           dwReserved1[11];
+    DDS_PIXELFORMAT ddspf;
+    DWORD           dwCaps;
+    DWORD           dwCaps2;
+    DWORD           dwCaps3;
+    DWORD           dwCaps4;
+    DWORD           dwReserved2;
+} DDS_HEADER;
+
+typedef enum {
+    DXGI_FORMAT_UNKNOWN,
+    DXGI_FORMAT_R32G32B32A32_TYPELESS,
+    DXGI_FORMAT_R32G32B32A32_FLOAT,
+    DXGI_FORMAT_R32G32B32A32_UINT,
+    DXGI_FORMAT_R32G32B32A32_SINT,
+    DXGI_FORMAT_R32G32B32_TYPELESS,
+    DXGI_FORMAT_R32G32B32_FLOAT,
+    DXGI_FORMAT_R32G32B32_UINT,
+    DXGI_FORMAT_R32G32B32_SINT,
+    DXGI_FORMAT_R16G16B16A16_TYPELESS,
+    DXGI_FORMAT_R16G16B16A16_FLOAT,
+    DXGI_FORMAT_R16G16B16A16_UNORM,
+    DXGI_FORMAT_R16G16B16A16_UINT,
+    DXGI_FORMAT_R16G16B16A16_SNORM,
+    DXGI_FORMAT_R16G16B16A16_SINT,
+    DXGI_FORMAT_R32G32_TYPELESS,
+    DXGI_FORMAT_R32G32_FLOAT,
+    DXGI_FORMAT_R32G32_UINT,
+    DXGI_FORMAT_R32G32_SINT,
+    DXGI_FORMAT_R32G8X24_TYPELESS,
+    DXGI_FORMAT_D32_FLOAT_S8X24_UINT,
+    DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS,
+    DXGI_FORMAT_X32_TYPELESS_G8X24_UINT,
+    DXGI_FORMAT_R10G10B10A2_TYPELESS,
+    DXGI_FORMAT_R10G10B10A2_UNORM,
+    DXGI_FORMAT_R10G10B10A2_UINT,
+    DXGI_FORMAT_R11G11B10_FLOAT,
+    DXGI_FORMAT_R8G8B8A8_TYPELESS,
+    DXGI_FORMAT_R8G8B8A8_UNORM,
+    DXGI_FORMAT_R8G8B8A8_UNORM_SRGB,
+    DXGI_FORMAT_R8G8B8A8_UINT,
+    DXGI_FORMAT_R8G8B8A8_SNORM,
+    DXGI_FORMAT_R8G8B8A8_SINT,
+    DXGI_FORMAT_R16G16_TYPELESS,
+    DXGI_FORMAT_R16G16_FLOAT,
+    DXGI_FORMAT_R16G16_UNORM,
+    DXGI_FORMAT_R16G16_UINT,
+    DXGI_FORMAT_R16G16_SNORM,
+    DXGI_FORMAT_R16G16_SINT,
+    DXGI_FORMAT_R32_TYPELESS,
+    DXGI_FORMAT_D32_FLOAT,
+    DXGI_FORMAT_R32_FLOAT,
+    DXGI_FORMAT_R32_UINT,
+    DXGI_FORMAT_R32_SINT,
+    DXGI_FORMAT_R24G8_TYPELESS,
+    DXGI_FORMAT_D24_UNORM_S8_UINT,
+    DXGI_FORMAT_R24_UNORM_X8_TYPELESS,
+    DXGI_FORMAT_X24_TYPELESS_G8_UINT,
+    DXGI_FORMAT_R8G8_TYPELESS,
+    DXGI_FORMAT_R8G8_UNORM,
+    DXGI_FORMAT_R8G8_UINT,
+    DXGI_FORMAT_R8G8_SNORM,
+    DXGI_FORMAT_R8G8_SINT,
+    DXGI_FORMAT_R16_TYPELESS,
+    DXGI_FORMAT_R16_FLOAT,
+    DXGI_FORMAT_D16_UNORM,
+    DXGI_FORMAT_R16_UNORM,
+    DXGI_FORMAT_R16_UINT,
+    DXGI_FORMAT_R16_SNORM,
+    DXGI_FORMAT_R16_SINT,
+    DXGI_FORMAT_R8_TYPELESS,
+    DXGI_FORMAT_R8_UNORM,
+    DXGI_FORMAT_R8_UINT,
+    DXGI_FORMAT_R8_SNORM,
+    DXGI_FORMAT_R8_SINT,
+    DXGI_FORMAT_A8_UNORM,
+    DXGI_FORMAT_R1_UNORM,
+    DXGI_FORMAT_R9G9B9E5_SHAREDEXP,
+    DXGI_FORMAT_R8G8_B8G8_UNORM,
+    DXGI_FORMAT_G8R8_G8B8_UNORM,
+    DXGI_FORMAT_BC1_TYPELESS,
+    DXGI_FORMAT_BC1_UNORM,
+    DXGI_FORMAT_BC1_UNORM_SRGB,
+    DXGI_FORMAT_BC2_TYPELESS,
+    DXGI_FORMAT_BC2_UNORM,
+    DXGI_FORMAT_BC2_UNORM_SRGB,
+    DXGI_FORMAT_BC3_TYPELESS,
+    DXGI_FORMAT_BC3_UNORM,
+    DXGI_FORMAT_BC3_UNORM_SRGB,
+    DXGI_FORMAT_BC4_TYPELESS,
+    DXGI_FORMAT_BC4_UNORM,
+    DXGI_FORMAT_BC4_SNORM,
+    DXGI_FORMAT_BC5_TYPELESS,
+    DXGI_FORMAT_BC5_UNORM,
+    DXGI_FORMAT_BC5_SNORM,
+    DXGI_FORMAT_B5G6R5_UNORM,
+    DXGI_FORMAT_B5G5R5A1_UNORM,
+    DXGI_FORMAT_B8G8R8A8_UNORM,
+    DXGI_FORMAT_B8G8R8X8_UNORM,
+    DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM,
+    DXGI_FORMAT_B8G8R8A8_TYPELESS,
+    DXGI_FORMAT_B8G8R8A8_UNORM_SRGB,
+    DXGI_FORMAT_B8G8R8X8_TYPELESS,
+    DXGI_FORMAT_B8G8R8X8_UNORM_SRGB,
+    DXGI_FORMAT_BC6H_TYPELESS,
+    DXGI_FORMAT_BC6H_UF16,
+    DXGI_FORMAT_BC6H_SF16,
+    DXGI_FORMAT_BC7_TYPELESS,
+    DXGI_FORMAT_BC7_UNORM,
+    DXGI_FORMAT_BC7_UNORM_SRGB,
+    DXGI_FORMAT_AYUV,
+    DXGI_FORMAT_Y410,
+    DXGI_FORMAT_Y416,
+    DXGI_FORMAT_NV12,
+    DXGI_FORMAT_P010,
+    DXGI_FORMAT_P016,
+    DXGI_FORMAT_420_OPAQUE,
+    DXGI_FORMAT_YUY2,
+    DXGI_FORMAT_Y210,
+    DXGI_FORMAT_Y216,
+    DXGI_FORMAT_NV11,
+    DXGI_FORMAT_AI44,
+    DXGI_FORMAT_IA44,
+    DXGI_FORMAT_P8,
+    DXGI_FORMAT_A8P8,
+    DXGI_FORMAT_B4G4R4A4_UNORM,
+    DXGI_FORMAT_P208,
+    DXGI_FORMAT_V208,
+    DXGI_FORMAT_V408,
+    DXGI_FORMAT_FORCE_UINT
+} DXGI_FORMAT;
+
+static const char *DxgiFormatToString(DXGI_FORMAT dxgiFormat)
+{
+    static const char *names[] = {
+        "DXGI_FORMAT_UNKNOWN",
+        "DXGI_FORMAT_R32G32B32A32_TYPELESS",
+        "DXGI_FORMAT_R32G32B32A32_FLOAT",
+        "DXGI_FORMAT_R32G32B32A32_UINT",
+        "DXGI_FORMAT_R32G32B32A32_SINT",
+        "DXGI_FORMAT_R32G32B32_TYPELESS",
+        "DXGI_FORMAT_R32G32B32_FLOAT",
+        "DXGI_FORMAT_R32G32B32_UINT",
+        "DXGI_FORMAT_R32G32B32_SINT",
+        "DXGI_FORMAT_R16G16B16A16_TYPELESS",
+        "DXGI_FORMAT_R16G16B16A16_FLOAT",
+        "DXGI_FORMAT_R16G16B16A16_UNORM",
+        "DXGI_FORMAT_R16G16B16A16_UINT",
+        "DXGI_FORMAT_R16G16B16A16_SNORM",
+        "DXGI_FORMAT_R16G16B16A16_SINT",
+        "DXGI_FORMAT_R32G32_TYPELESS",
+        "DXGI_FORMAT_R32G32_FLOAT",
+        "DXGI_FORMAT_R32G32_UINT",
+        "DXGI_FORMAT_R32G32_SINT",
+        "DXGI_FORMAT_R32G8X24_TYPELESS",
+        "DXGI_FORMAT_D32_FLOAT_S8X24_UINT",
+        "DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS",
+        "DXGI_FORMAT_X32_TYPELESS_G8X24_UINT",
+        "DXGI_FORMAT_R10G10B10A2_TYPELESS",
+        "DXGI_FORMAT_R10G10B10A2_UNORM",
+        "DXGI_FORMAT_R10G10B10A2_UINT",
+        "DXGI_FORMAT_R11G11B10_FLOAT",
+        "DXGI_FORMAT_R8G8B8A8_TYPELESS",
+        "DXGI_FORMAT_R8G8B8A8_UNORM",
+        "DXGI_FORMAT_R8G8B8A8_UNORM_SRGB",
+        "DXGI_FORMAT_R8G8B8A8_UINT",
+        "DXGI_FORMAT_R8G8B8A8_SNORM",
+        "DXGI_FORMAT_R8G8B8A8_SINT",
+        "DXGI_FORMAT_R16G16_TYPELESS",
+        "DXGI_FORMAT_R16G16_FLOAT",
+        "DXGI_FORMAT_R16G16_UNORM",
+        "DXGI_FORMAT_R16G16_UINT",
+        "DXGI_FORMAT_R16G16_SNORM",
+        "DXGI_FORMAT_R16G16_SINT",
+        "DXGI_FORMAT_R32_TYPELESS",
+        "DXGI_FORMAT_D32_FLOAT",
+        "DXGI_FORMAT_R32_FLOAT",
+        "DXGI_FORMAT_R32_UINT",
+        "DXGI_FORMAT_R32_SINT",
+        "DXGI_FORMAT_R24G8_TYPELESS",
+        "DXGI_FORMAT_D24_UNORM_S8_UINT",
+        "DXGI_FORMAT_R24_UNORM_X8_TYPELESS",
+        "DXGI_FORMAT_X24_TYPELESS_G8_UINT",
+        "DXGI_FORMAT_R8G8_TYPELESS",
+        "DXGI_FORMAT_R8G8_UNORM",
+        "DXGI_FORMAT_R8G8_UINT",
+        "DXGI_FORMAT_R8G8_SNORM",
+        "DXGI_FORMAT_R8G8_SINT",
+        "DXGI_FORMAT_R16_TYPELESS",
+        "DXGI_FORMAT_R16_FLOAT",
+        "DXGI_FORMAT_D16_UNORM",
+        "DXGI_FORMAT_R16_UNORM",
+        "DXGI_FORMAT_R16_UINT",
+        "DXGI_FORMAT_R16_SNORM",
+        "DXGI_FORMAT_R16_SINT",
+        "DXGI_FORMAT_R8_TYPELESS",
+        "DXGI_FORMAT_R8_UNORM",
+        "DXGI_FORMAT_R8_UINT",
+        "DXGI_FORMAT_R8_SNORM",
+        "DXGI_FORMAT_R8_SINT",
+        "DXGI_FORMAT_A8_UNORM",
+        "DXGI_FORMAT_R1_UNORM",
+        "DXGI_FORMAT_R9G9B9E5_SHAREDEXP",
+        "DXGI_FORMAT_R8G8_B8G8_UNORM",
+        "DXGI_FORMAT_G8R8_G8B8_UNORM",
+        "DXGI_FORMAT_BC1_TYPELESS",
+        "DXGI_FORMAT_BC1_UNORM",
+        "DXGI_FORMAT_BC1_UNORM_SRGB",
+        "DXGI_FORMAT_BC2_TYPELESS",
+        "DXGI_FORMAT_BC2_UNORM",
+        "DXGI_FORMAT_BC2_UNORM_SRGB",
+        "DXGI_FORMAT_BC3_TYPELESS",
+        "DXGI_FORMAT_BC3_UNORM",
+        "DXGI_FORMAT_BC3_UNORM_SRGB",
+        "DXGI_FORMAT_BC4_TYPELESS",
+        "DXGI_FORMAT_BC4_UNORM",
+        "DXGI_FORMAT_BC4_SNORM",
+        "DXGI_FORMAT_BC5_TYPELESS",
+        "DXGI_FORMAT_BC5_UNORM",
+        "DXGI_FORMAT_BC5_SNORM",
+        "DXGI_FORMAT_B5G6R5_UNORM",
+        "DXGI_FORMAT_B5G5R5A1_UNORM",
+        "DXGI_FORMAT_B8G8R8A8_UNORM",
+        "DXGI_FORMAT_B8G8R8X8_UNORM",
+        "DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM",
+        "DXGI_FORMAT_B8G8R8A8_TYPELESS",
+        "DXGI_FORMAT_B8G8R8A8_UNORM_SRGB",
+        "DXGI_FORMAT_B8G8R8X8_TYPELESS",
+        "DXGI_FORMAT_B8G8R8X8_UNORM_SRGB",
+        "DXGI_FORMAT_BC6H_TYPELESS",
+        "DXGI_FORMAT_BC6H_UF16",
+        "DXGI_FORMAT_BC6H_SF16",
+        "DXGI_FORMAT_BC7_TYPELESS",
+        "DXGI_FORMAT_BC7_UNORM",
+        "DXGI_FORMAT_BC7_UNORM_SRGB",
+        "DXGI_FORMAT_AYUV",
+        "DXGI_FORMAT_Y410",
+        "DXGI_FORMAT_Y416",
+        "DXGI_FORMAT_NV12",
+        "DXGI_FORMAT_P010",
+        "DXGI_FORMAT_P016",
+        "DXGI_FORMAT_420_OPAQUE",
+        "DXGI_FORMAT_YUY2",
+        "DXGI_FORMAT_Y210",
+        "DXGI_FORMAT_Y216",
+        "DXGI_FORMAT_NV11",
+        "DXGI_FORMAT_AI44",
+        "DXGI_FORMAT_IA44",
+        "DXGI_FORMAT_P8",
+        "DXGI_FORMAT_A8P8",
+        "DXGI_FORMAT_B4G4R4A4_UNORM",
+        "DXGI_FORMAT_P208",
+        "DXGI_FORMAT_V208",
+        "DXGI_FORMAT_V408",
+        "DXGI_FORMAT_FORCE_UINT",
+    };
+    int index = (int)dxgiFormat;
+    if (index >= 0 && index < sizeof(names) / sizeof(names[0]))
+        return names[index];
+    return "(Unknown)";
+}
+
+typedef enum {
+    D3D10_RESOURCE_DIMENSION_UNKNOWN,
+    D3D10_RESOURCE_DIMENSION_BUFFER,
+    D3D10_RESOURCE_DIMENSION_TEXTURE1D,
+    D3D10_RESOURCE_DIMENSION_TEXTURE2D,
+    D3D10_RESOURCE_DIMENSION_TEXTURE3D
+} D3D10_RESOURCE_DIMENSION;
+
+static const char *ResourceDimensionToString(D3D10_RESOURCE_DIMENSION resourceDimension)
+{
+    static const char *names[] = {
+        "D3D10_RESOURCE_DIMENSION_UNKNOWN",
+        "D3D10_RESOURCE_DIMENSION_BUFFER",
+        "D3D10_RESOURCE_DIMENSION_TEXTURE1D",
+        "D3D10_RESOURCE_DIMENSION_TEXTURE2D",
+        "D3D10_RESOURCE_DIMENSION_TEXTURE3D",
+    };
+    int index = (int)resourceDimension;
+    if (index >= 0 && index < sizeof(names) / sizeof(names[0]))
+        return names[index];
+    return "(Unknown)";
+}
+
+typedef enum {
+    D3D10_RESOURCE_MISC_GENERATE_MIPS,
+    D3D10_RESOURCE_MISC_SHARED,
+    D3D10_RESOURCE_MISC_TEXTURECUBE,
+    D3D10_RESOURCE_MISC_SHARED_KEYEDMUTEX,
+    D3D10_RESOURCE_MISC_GDI_COMPATIBLE
+} D3D10_RESOURCE_MISC_FLAG;
+
+static const char *MiscFlagToString(UINT miscFlag)
+{
+    static const char *names[] = {
+        "D3D10_RESOURCE_MISC_GENERATE_MIPS",
+        "D3D10_RESOURCE_MISC_SHARED",
+        "D3D10_RESOURCE_MISC_TEXTURECUBE",
+        "D3D10_RESOURCE_MISC_SHARED_KEYEDMUTEX",
+        "D3D10_RESOURCE_MISC_GDI_COMPATIBLE",
+    };
+    int index = (int)miscFlag;
+    if (index >= 0 && index < sizeof(names) / sizeof(names[0]))
+        return names[index];
+    return "(Unknown)";
+}
+
+typedef struct {
+    DXGI_FORMAT              dxgiFormat;
+    D3D10_RESOURCE_DIMENSION resourceDimension;
+    UINT                     miscFlag;
+    UINT                     arraySize;
+    UINT                     miscFlags2;
+} DDS_HEADER_DXT10;
+
+typedef struct {
+    DWORD               dwMagic;
+    DDS_HEADER          header;
+    DDS_HEADER_DXT10    header10;
+} DDS_FILE_HEADER;
+
+DdsFileReader::DdsFileReader(const QString &filename) :
+    m_filename(filename)
+{     
+}
+
+QOpenGLTexture *DdsFileReader::createOpenGLTexture()
+{
+    QFile file(m_filename);
+    
+    if (!file.open(QIODevice::ReadOnly)) {
+        qDebug() << "Open" << m_filename << "failed";
+        return nullptr;
+    }
+    
+    DDS_FILE_HEADER fileHeader;
+    if (sizeof(fileHeader) != file.read((char *)&fileHeader, sizeof(fileHeader))) {
+        qDebug() << "Read DDS file hader failed";
+        return nullptr;
+    }
+    
+    if (0x20534444 != qFromLittleEndian<quint32>(&fileHeader.dwMagic)) {
+        qDebug() << "Not a DDS file";
+        return nullptr;
+    }
+    
+    if (0x30315844 != qFromLittleEndian<quint32>(&fileHeader.header.ddspf.dwFourCC)) {
+        qDebug() << "Unsupported DDS file, expected DX10 file";
+        return nullptr;
+    }
+    
+    auto caps2 = qFromLittleEndian<quint32>(&fileHeader.header.dwCaps2);
+    if (!(DDSCAPS2_CUBEMAP & caps2)) {
+        qDebug() << "Unsupported DDS file, expected CUBEMAP file";
+        return nullptr;
+    }
+    
+    //qDebug() << "Start anyalize DDS file...";
+    
+    int width = qFromLittleEndian<quint32>(&fileHeader.header.dwWidth);
+    int height = qFromLittleEndian<quint32>(&fileHeader.header.dwHeight);
+    
+    //qDebug() << "DDS size:" << width << "X" << height;
+    
+    //auto pitchOrLinearSize = qFromLittleEndian<quint32>(&fileHeader.header.dwPitchOrLinearSize);
+    //qDebug() << "DDS pitch or linear size:" << pitchOrLinearSize;
+    
+    auto arraySize = qFromLittleEndian<quint32>(&fileHeader.header10.arraySize);
+    //qDebug() << "DDS array size:" << arraySize;
+    
+    auto mipMapCount = qFromLittleEndian<quint32>(&fileHeader.header.dwMipMapCount);
+    //qDebug() << "DDS mip map count:" << mipMapCount;
+    
+    DXGI_FORMAT dxgiFormat = (DXGI_FORMAT)qFromLittleEndian<quint32>(&fileHeader.header10.dxgiFormat);
+    //qDebug() << "DDS dxgi format:" << DxgiFormatToString(dxgiFormat);
+    //qDebug() << "DDS resource dimension:" << ResourceDimensionToString((D3D10_RESOURCE_DIMENSION)qFromLittleEndian<quint32>(&fileHeader.header10.resourceDimension));
+    //qDebug() << "DDS misc flag:" << MiscFlagToString((UINT)qFromLittleEndian<quint32>(&fileHeader.header10.miscFlag));
+    
+    auto faces = 0;
+    if (DDSCAPS2_CUBEMAP_POSITIVEX & caps2) {
+        //qDebug() << "DDS found +x";
+        ++faces;
+    }
+    if (DDSCAPS2_CUBEMAP_NEGATIVEX & caps2) {
+        //qDebug() << "DDS found -x";
+        ++faces;
+    }
+    if (DDSCAPS2_CUBEMAP_POSITIVEY & caps2) {
+        //qDebug() << "DDS found +y";
+        ++faces;
+    }
+    if (DDSCAPS2_CUBEMAP_NEGATIVEY & caps2) {
+        //qDebug() << "DDS found -y";
+        ++faces;
+    }
+    if (DDSCAPS2_CUBEMAP_POSITIVEZ & caps2) {
+        //qDebug() << "DDS found +z";
+        ++faces;
+    }
+    if (DDSCAPS2_CUBEMAP_NEGATIVEZ & caps2) {
+        //qDebug() << "DDS found -z";
+        ++faces;
+    }
+    
+    if (6 != faces) {
+        qDebug() << "Unsupported DDS file, expected six faces";
+        return nullptr;
+    }
+    
+    if (1 != arraySize) {
+        qDebug() << "Unsupported DDS file, expected one layer";
+        return nullptr;
+    }
+    
+    if (DXGI_FORMAT_R16G16B16A16_FLOAT != dxgiFormat) {
+        qDebug() << "Unsupported DDS file, expected dxgi format: DXGI_FORMAT_R16G16B16A16_FLOAT";
+        return nullptr; 
+    }
+    int components = 8;
+    int oneFaceSize = 0;
+    auto calculateOneFaceSizeAtLevel = [=](int level) {
+        return qMax(width >> level, 1) * qMax(height >> level, 1) * components;
+    };
+    for (auto level = 0; level < mipMapCount; ++level) {
+        oneFaceSize += calculateOneFaceSizeAtLevel(level);
+    }
+    int totalSize = arraySize * faces * oneFaceSize;
+    const QByteArray data = file.read(totalSize);
+    if (data.size() < totalSize) {
+        qDebug() << "DDS file invalid, expected total size:" << totalSize << "read size:" << data.size();
+        return nullptr;
+    }
+    
+    int depth = 1;
+    
+    QOpenGLTexture* texture = new QOpenGLTexture(QOpenGLTexture::TargetCubeMap);
+    texture->setFormat(QOpenGLTexture::RGBA16F);
+    texture->setSize(width, height, depth);
+    texture->setAutoMipMapGenerationEnabled(false);
+    texture->setMipBaseLevel(0);
+    texture->setMipMaxLevel(mipMapCount - 1);
+    texture->setMipLevels(mipMapCount);
+    
+    if (!texture->create()) {
+        qDebug() << "QOpenGLTexture::create failed";
+        delete texture;
+        return nullptr;
+    }
+    
+    texture->allocateStorage();
+    if (!texture->isStorageAllocated()) {
+        qDebug() << "QOpenGLTexture::isStorageAllocated false";
+        delete texture;
+        return nullptr;
+    }
+    
+    uint64_t dataOffset = 0;
+    for (int layer = 0; layer < arraySize; ++layer) {
+        for (int face = 0; face < faces; ++face) {
+            for (int level = 0; level < mipMapCount; ++level) {
+                QOpenGLPixelTransferOptions uploadOptions;
+                uploadOptions.setAlignment(1);
+                texture->setData(level, 
+                    layer, 
+                    static_cast<QOpenGLTexture::CubeMapFace>(QOpenGLTexture::CubeMapPositiveX + face), 
+                    QOpenGLTexture::RGBA, 
+                    QOpenGLTexture::Float16, 
+                    data.constData() + dataOffset, 
+                    &uploadOptions);
+                dataOffset += calculateOneFaceSizeAtLevel(level);
+            }
+        }
+    }
+    
+    return texture;
+}

src/ddsfile.h

@@ -0,0 +1,15 @@
+#ifndef DUST3D_DDS_FILE_H
+#define DUST3D_DDS_FILE_H
+#include <QString>
+#include <QOpenGLTexture>
+
+class DdsFileReader
+{
+public:
+    DdsFileReader(const QString &filename);
+    QOpenGLTexture *createOpenGLTexture();
+private:
+    QString m_filename;
+};
+
+#endif

src/document.cpp

@@ -7,7 +7,7 @@
 #include <QApplication>
 #include <QVector3D>
 #include <functional>
-#include <QBuffer>
+#include <QtCore/qbuffer.h>
 #include <QElapsedTimer>
 #include <queue>
 #include "document.h"
@@ -57,7 +57,6 @@ Document::Document() :
     m_postProcessedOutcome(new Outcome),
     m_resultTextureMesh(nullptr),
     m_textureImageUpdateVersion(0),
-    m_sharedContextWidget(nullptr),
     m_allPositionRelatedLocksEnabled(true),
     m_smoothNormal(!Preferences::instance().flatShading()),
     m_rigGenerator(nullptr),
@@ -3311,11 +3310,6 @@ void Document::checkExportReadyState()
         emit exportReady();
 }
 
-void Document::setSharedContextWidget(QOpenGLWidget *sharedContextWidget)
-{
-    m_sharedContextWidget = sharedContextWidget;
-}
-
 void Document::collectComponentDescendantParts(QUuid componentId, std::vector<QUuid> &partIds) const
 {
     const Component *component = findComponent(componentId);

src/document.h

@@ -9,7 +9,6 @@
 #include <QImage>
 #include <cmath>
 #include <algorithm>
-#include <QOpenGLWidget>
 #include <QPolygon>
 #include "snapshot.h"
 #include "meshloader.h"
@@ -577,7 +576,6 @@ public:
     const std::vector<RiggerBone> *resultRigBones() const;
     const std::map<int, RiggerVertexWeights> *resultRigWeights() const;
     void updateTurnaround(const QImage &image);
-    void setSharedContextWidget(QOpenGLWidget *sharedContextWidget);
     bool hasPastableMaterialsInClipboard() const;
     bool hasPastablePosesInClipboard() const;
     bool hasPastableMotionsInClipboard() const;
@@ -781,7 +779,6 @@ private: // need initialize
     Outcome *m_postProcessedOutcome;
     MeshLoader *m_resultTextureMesh;
     unsigned long long m_textureImageUpdateVersion;
-    QOpenGLWidget *m_sharedContextWidget;
     QUuid m_currentCanvasComponentId;
     bool m_allPositionRelatedLocksEnabled;
     bool m_smoothNormal;

src/documentwindow.cpp

@@ -6,7 +6,7 @@
 #include <QPushButton>
 #include <QFileDialog>
 #include <QTabWidget>
-#include <QBuffer>
+#include <QtCore/qbuffer.h>
 #include <QMessageBox>
 #include <QTimer>
 #include <QMenuBar>
@@ -311,6 +311,7 @@ DocumentWindow::DocumentWindow() :
     m_modelRenderWidget->move(DocumentWindow::m_modelRenderWidgetInitialX, DocumentWindow::m_modelRenderWidgetInitialY);
     m_modelRenderWidget->setMousePickRadius(m_document->mousePickRadius());
     m_modelRenderWidget->toggleWireframe();
+    m_modelRenderWidget->enableEnvironmentLight();
     
     connect(m_modelRenderWidget, &ModelWidget::mouseRayChanged, m_document,
             [=](const QVector3D &nearPosition, const QVector3D &farPosition) {
@@ -343,8 +344,6 @@ DocumentWindow::DocumentWindow() :
     m_graphicsWidget->setModelWidget(m_modelRenderWidget);
     containerWidget->setModelWidget(m_modelRenderWidget);
     
-    m_document->setSharedContextWidget(m_modelRenderWidget);
-    
     setTabPosition(Qt::RightDockWidgetArea, QTabWidget::East);
 
     QDockWidget *partTreeDocker = new QDockWidget(tr("Parts"), this);

src/fbxfile.cpp

@@ -2,7 +2,7 @@
 #include <fbxproperty.h>
 #include <QDateTime>
 #include <QtMath>
-#include <QBuffer>
+#include <QtCore/qbuffer.h>
 #include <QByteArray>
 #include <QFileInfo>
 #include "fbxfile.h"

src/glbfile.cpp

@@ -4,7 +4,7 @@
 #include <QDataStream>
 #include <QFileInfo>
 #include <QDir>
-#include <QBuffer>
+#include <QtCore/qbuffer.h>
 #include "glbfile.h"
 #include "version.h"
 #include "util.h"

src/imageforever.cpp

@@ -1,7 +1,7 @@
 #include <map>
 #include <QMutex>
 #include <QMutexLocker>
-#include <QBuffer>
+#include <QtCore/qbuffer.h>
 #include "imageforever.h"
 
 struct ImageForeverItem

src/main.cpp

@@ -19,10 +19,10 @@ int main(int argc, char ** argv)
     if (translator.load(QLocale(), QLatin1String("dust3d"), QLatin1String("_"), QLatin1String(":/languages")))
         app.installTranslator(&translator);
     
-    //QSurfaceFormat format = QSurfaceFormat::defaultFormat();
+    QSurfaceFormat format = QSurfaceFormat::defaultFormat();
-    //format.setProfile(QSurfaceFormat::OpenGLContextProfile::CoreProfile);
+    format.setProfile(QSurfaceFormat::OpenGLContextProfile::CoreProfile);
-    //format.setVersion(3, 3);
+    format.setVersion(3, 3);
-    //QSurfaceFormat::setDefaultFormat(format);
+    QSurfaceFormat::setDefaultFormat(format);
     
     // QuantumCD/Qt 5 Dark Fusion Palette
     // https://gist.github.com/QuantumCD/6245215

src/materialeditwidget.cpp

@@ -48,6 +48,7 @@ MaterialEditWidget::MaterialEditWidget(const Document *document, QWidget *parent
     m_previewWidget->setMinimumSize(128, 128);
     m_previewWidget->resize(512, 512);
     m_previewWidget->move(-128, -128);
+    m_previewWidget->enableEnvironmentLight();
     
     QFont nameFont;
     nameFont.setWeight(QFont::Light);

src/materialwidget.cpp

@@ -12,6 +12,7 @@ MaterialWidget::MaterialWidget(const Document *document, QUuid materialId) :
     m_previewWidget->setFixedSize(Theme::materialPreviewImageSize, Theme::materialPreviewImageSize);
     m_previewWidget->enableMove(false);
     m_previewWidget->enableZoom(false);
+    m_previewWidget->enableEnvironmentLight();
 
     m_nameLabel = new QLabel;
     m_nameLabel->setAlignment(Qt::AlignCenter);

src/modelmeshbinder.cpp

@@ -5,8 +5,9 @@
 #include <map>
 #include <QDebug>
 #include <QDir>
+#include <QSurfaceFormat>
 #include "modelmeshbinder.h"
-#include "ds3file.h"
+#include "ddsfile.h"
 
 ModelMeshBinder::ModelMeshBinder(bool toolEnabled) :
     m_toolEnabled(toolEnabled)
@@ -20,6 +21,8 @@ ModelMeshBinder::~ModelMeshBinder()
     delete m_texture;
     delete m_normalMap;
     delete m_metalnessRoughnessAmbientOcclusionMap;
+    delete m_environmentIrradianceMap;
+    delete m_environmentSpecularMap;
 }
 
 void ModelMeshBinder::updateMesh(MeshLoader *mesh)
@@ -53,6 +56,11 @@ void ModelMeshBinder::initialize()
         m_vaoTool.create();
 }
 
+void ModelMeshBinder::enableEnvironmentLight()
+{
+    m_environmentLightEnabled = true;
+}
+
 void ModelMeshBinder::paint(ModelShaderProgram *program)
 {
     MeshLoader *newMesh = nullptr;
@@ -72,7 +80,6 @@ void ModelMeshBinder::paint(ModelShaderProgram *program)
             delete m_mesh;
             m_mesh = newMesh;
             if (m_mesh) {
-            
                 m_hasTexture = nullptr != m_mesh->textureImage();
                 delete m_texture;
                 m_texture = nullptr;
@@ -102,6 +109,19 @@ void ModelMeshBinder::paint(ModelShaderProgram *program)
                         (m_hasMetalnessMap || m_hasRoughnessMap || m_hasAmbientOcclusionMap))
                     m_metalnessRoughnessAmbientOcclusionMap = new QOpenGLTexture(*m_mesh->metalnessRoughnessAmbientOcclusionImage());
                 
+                delete m_environmentIrradianceMap;
+                m_environmentIrradianceMap = nullptr;
+                delete m_environmentSpecularMap;
+                m_environmentSpecularMap = nullptr;
+                if (program->isCoreProfile() && m_environmentLightEnabled &&
+                        (m_hasMetalnessMap || m_hasRoughnessMap)) {
+                    DdsFileReader irradianceFile(":/resources/cedar_bridge_irradiance.dds");
+                    m_environmentIrradianceMap = irradianceFile.createOpenGLTexture();
+                    
+                    DdsFileReader specularFile(":/resources/cedar_bridge_specular.dds");
+                    m_environmentSpecularMap = specularFile.createOpenGLTexture();
+                }
+                
                 {
                     QOpenGLVertexArrayObject::Binder vaoBinder(&m_vaoTriangle);
                     if (m_vboTriangle.isCreated())
@@ -215,6 +235,10 @@ void ModelMeshBinder::paint(ModelShaderProgram *program)
                 program->setUniformValue(program->metalnessMapEnabledLoc(), 0);
                 program->setUniformValue(program->roughnessMapEnabledLoc(), 0);
                 program->setUniformValue(program->ambientOcclusionMapEnabledLoc(), 0);
+                if (program->isCoreProfile()) {
+                    program->setUniformValue(program->environmentIrradianceMapEnabledLoc(), 0);
+                    program->setUniformValue(program->environmentSpecularMapEnabledLoc(), 0);
+                }
                 f->glDrawArrays(GL_LINES, 0, m_renderEdgeVertexCount);
             }
         }
@@ -246,6 +270,22 @@ void ModelMeshBinder::paint(ModelShaderProgram *program)
         program->setUniformValue(program->metalnessMapEnabledLoc(), m_hasMetalnessMap ? 1 : 0);
         program->setUniformValue(program->roughnessMapEnabledLoc(), m_hasRoughnessMap ? 1 : 0);
         program->setUniformValue(program->ambientOcclusionMapEnabledLoc(), m_hasAmbientOcclusionMap ? 1 : 0);
+        if (program->isCoreProfile()) {
+            if (nullptr != m_environmentIrradianceMap) {
+                m_environmentIrradianceMap->bind(3);
+                program->setUniformValue(program->environmentIrradianceMapIdLoc(), 3);
+                program->setUniformValue(program->environmentIrradianceMapEnabledLoc(), 1);
+            } else {
+                program->setUniformValue(program->environmentIrradianceMapEnabledLoc(), 0);
+            }
+            if (nullptr != m_environmentSpecularMap) {
+                m_environmentSpecularMap->bind(4);
+                program->setUniformValue(program->environmentSpecularMapIdLoc(), 4);
+                program->setUniformValue(program->environmentSpecularMapEnabledLoc(), 1);
+            } else {
+                program->setUniformValue(program->environmentSpecularMapEnabledLoc(), 0);
+            }
+        }
         f->glDrawArrays(GL_TRIANGLES, 0, m_renderTriangleVertexCount);
     }
     if (m_toolEnabled) {
@@ -257,6 +297,10 @@ void ModelMeshBinder::paint(ModelShaderProgram *program)
             program->setUniformValue(program->metalnessMapEnabledLoc(), 0);
             program->setUniformValue(program->roughnessMapEnabledLoc(), 0);
             program->setUniformValue(program->ambientOcclusionMapEnabledLoc(), 0);
+            if (program->isCoreProfile()) {
+                program->setUniformValue(program->environmentIrradianceMapEnabledLoc(), 0);
+                program->setUniformValue(program->environmentSpecularMapEnabledLoc(), 0);
+            }
             f->glDrawArrays(GL_TRIANGLES, 0, m_renderToolVertexCount);
         }
     }

src/modelmeshbinder.h

@@ -22,6 +22,7 @@ public:
     bool isWireframesVisible();
     void enableCheckUv();
     void disableCheckUv();
+    void enableEnvironmentLight();
     bool isCheckUvEnabled();
     void reloadMesh();
 private:
@@ -42,6 +43,9 @@ private:
     QOpenGLTexture *m_metalnessRoughnessAmbientOcclusionMap = nullptr;
     bool m_toolEnabled = false;
     bool m_checkUvEnabled = false;
+    bool m_environmentLightEnabled = false;
+    QOpenGLTexture *m_environmentIrradianceMap = nullptr;
+    QOpenGLTexture *m_environmentSpecularMap = nullptr;
 private:
     QOpenGLVertexArrayObject m_vaoTriangle;
     QOpenGLBuffer m_vboTriangle;

src/modelshaderprogram.cpp

@@ -17,11 +17,17 @@ const QString &ModelShaderProgram::loadShaderSource(const QString &name)
     return insertResult.first->second;
 }
 
+bool ModelShaderProgram::isCoreProfile()
+{
+    return m_isCoreProfile;
+}
+
 ModelShaderProgram::ModelShaderProgram()
 {
     if (QSurfaceFormat::defaultFormat().profile() == QSurfaceFormat::CoreProfile) {
         this->addShaderFromSourceCode(QOpenGLShader::Vertex, loadShaderSource(":/shaders/default.core.vert"));
         this->addShaderFromSourceCode(QOpenGLShader::Fragment, loadShaderSource(":/shaders/default.core.frag"));
+        m_isCoreProfile = true;
     } else {
         this->addShaderFromSourceCode(QOpenGLShader::Vertex, loadShaderSource(":/shaders/default.vert"));
         this->addShaderFromSourceCode(QOpenGLShader::Fragment, loadShaderSource(":/shaders/default.frag"));
@@ -53,6 +59,12 @@ ModelShaderProgram::ModelShaderProgram()
     m_mousePickEnabledLoc = this->uniformLocation("mousePickEnabled");
     m_mousePickTargetPositionLoc = this->uniformLocation("mousePickTargetPosition");
     m_mousePickRadiusLoc = this->uniformLocation("mousePickRadius");
+    if (m_isCoreProfile) {
+        m_environmentIrradianceMapIdLoc = this->uniformLocation("environmentIrradianceMapId");
+        m_environmentIrradianceMapEnabledLoc = this->uniformLocation("environmentIrradianceMapEnabled");
+        m_environmentSpecularMapIdLoc = this->uniformLocation("environmentSpecularMapId");
+        m_environmentSpecularMapEnabledLoc = this->uniformLocation("environmentSpecularMapEnabled");
+    }
 }
 
 int ModelShaderProgram::projectionMatrixLoc()
@@ -134,3 +146,24 @@ int ModelShaderProgram::mousePickRadiusLoc()
 {
     return m_mousePickRadiusLoc;
 }
+
+int ModelShaderProgram::environmentIrradianceMapIdLoc()
+{
+    return m_environmentIrradianceMapIdLoc;
+}
+
+int ModelShaderProgram::environmentIrradianceMapEnabledLoc()
+{
+    return m_environmentIrradianceMapEnabledLoc;
+}
+
+int ModelShaderProgram::environmentSpecularMapIdLoc()
+{
+    return m_environmentSpecularMapIdLoc;
+}
+
+int ModelShaderProgram::environmentSpecularMapEnabledLoc()
+{
+    return m_environmentSpecularMapEnabledLoc;
+}
+

src/modelshaderprogram.h

@@ -23,24 +23,34 @@ public:
     int mousePickEnabledLoc();
     int mousePickTargetPositionLoc();
     int mousePickRadiusLoc();
+    int environmentIrradianceMapIdLoc();
+    int environmentIrradianceMapEnabledLoc();
+    int environmentSpecularMapIdLoc();
+    int environmentSpecularMapEnabledLoc();
+    bool isCoreProfile();
     static const QString &loadShaderSource(const QString &name);
 private:
-    int m_projectionMatrixLoc;
+    bool m_isCoreProfile = false;
-    int m_modelMatrixLoc;
+    int m_projectionMatrixLoc = 0;
-    int m_normalMatrixLoc;
+    int m_modelMatrixLoc = 0;
-    int m_viewMatrixLoc;
+    int m_normalMatrixLoc = 0;
-    int m_lightPosLoc;
+    int m_viewMatrixLoc = 0;
-    int m_textureIdLoc;
+    int m_lightPosLoc = 0;
-    int m_textureEnabledLoc;
+    int m_textureIdLoc = 0;
-    int m_normalMapEnabledLoc;
+    int m_textureEnabledLoc = 0;
-    int m_normalMapIdLoc;
+    int m_normalMapEnabledLoc = 0;
-    int m_metalnessMapEnabledLoc;
+    int m_normalMapIdLoc = 0;
-    int m_roughnessMapEnabledLoc;
+    int m_metalnessMapEnabledLoc = 0;
-    int m_ambientOcclusionMapEnabledLoc;
+    int m_roughnessMapEnabledLoc = 0;
-    int m_metalnessRoughnessAmbientOcclusionMapIdLoc;
+    int m_ambientOcclusionMapEnabledLoc = 0;
-    int m_mousePickEnabledLoc;
+    int m_metalnessRoughnessAmbientOcclusionMapIdLoc = 0;
-    int m_mousePickTargetPositionLoc;
+    int m_mousePickEnabledLoc = 0;
-    int m_mousePickRadiusLoc;
+    int m_mousePickTargetPositionLoc = 0;
+    int m_mousePickRadiusLoc = 0;
+    int m_environmentIrradianceMapIdLoc = 0;
+    int m_environmentIrradianceMapEnabledLoc = 0;
+    int m_environmentSpecularMapIdLoc = 0;
+    int m_environmentSpecularMapEnabledLoc = 0;
 };
 
 #endif

src/modelwidget.cpp

@@ -211,6 +211,12 @@ void ModelWidget::toggleWireframe()
     update();
 }
 
+void ModelWidget::enableEnvironmentLight()
+{
+    m_meshBinder.enableEnvironmentLight();
+    update();
+}
+
 void ModelWidget::toggleRotation()
 {
     if (nullptr != m_rotationTimer) {

src/modelwidget.h

@@ -39,6 +39,7 @@ public:
     void toggleWireframe();
     void toggleRotation();
     void toggleUvCheck();
+    void enableEnvironmentLight();
     void enableMove(bool enabled);
     void enableZoom(bool enabled);
     void enableMousePicking(bool enabled);