Merge release/materials_featurette to main on promotion of secondlife/viewer #648: Release/materials featurette

2 files changed, 161 insertions, 5 deletions

diff --git a/indra/llimage/llimage.cpp b/indra/llimage/llimage.cpp
index c4d7096036..da5b531857 100644
--- a/indra/llimage/llimage.cpp
+++ b/indra/llimage/llimage.cpp
@@ -31,6 +31,7 @@
 
 #include "llmath.h"
 #include "v4coloru.h"
+#include "v3color.h"
 
 #include "llimagebmp.h"
 #include "llimagetga.h"
@@ -984,6 +985,28 @@ void LLImageRaw::verticalFlip()
 }
 
 
+bool LLImageRaw::checkHasTransparentPixels()
+{
+    if (getComponents() != 4)
+    {
+        return false;
+    }
+
+    U8* data = getData();
+    U32 pixels = getWidth() * getHeight();
+
+    // check alpha channel for all 255
+    for (U32 i = 0; i < pixels; ++i)
+    {
+        if (data[i * 4 + 3] != 255)
+        {
+            return true;
+        }
+    }
+
+    return false;
+}
+
 bool LLImageRaw::optimizeAwayAlpha()
 {
     if (getComponents() == 4)
@@ -1021,6 +1044,34 @@ bool LLImageRaw::optimizeAwayAlpha()
     return false;
 }
 
+bool LLImageRaw::makeAlpha()
+{
+    if (getComponents() == 3)
+    {
+        U8* data = getData();
+        U32 pixels = getWidth() * getHeight();
+
+        // alpha channel doesn't exist, make a new copy of data with alpha channel
+        U8* new_data = (U8*) ll_aligned_malloc_16(getWidth() * getHeight() * 4);
+
+        for (U32 i = 0; i < pixels; ++i)
+        {
+            U32 di = i * 4;
+            U32 si = i * 3;
+            for (U32 j = 0; j < 3; ++j)
+            {
+                new_data[di+j] = data[si+j];
+            }
+        }
+
+        setDataAndSize(new_data, getWidth(), getHeight(), 3);
+
+        return true;
+    }
+
+    return false;
+}
+
 void LLImageRaw::expandToPowerOfTwo(S32 max_dim, bool scale_image)
 {
     // Find new sizes
@@ -1105,7 +1156,7 @@ void LLImageRaw::composite( LLImageRaw* src )
         return;
     }
 
-    llassert(3 == src->getComponents());
+    llassert((3 == src->getComponents()) || (4 == src->getComponents()));
     llassert(3 == dst->getComponents());
 
     if( 3 == dst->getComponents() )
@@ -1263,6 +1314,30 @@ void LLImageRaw::fill( const LLColor4U& color )
     }
 }
 
+void LLImageRaw::tint( const LLColor3& color )
+{
+    llassert( (3 == getComponents()) || (4 == getComponents()) );
+    if (isBufferInvalid())
+    {
+        LL_WARNS() << "Invalid image buffer" << LL_ENDL;
+        return;
+    }
+
+    S32 pixels = getWidth() * getHeight();
+    const S32 components = getComponents();
+    U8* data = getData();
+    for( S32 i = 0; i < pixels; i++ )
+    {
+        const float c0 = data[0] * color.mV[0];
+        const float c1 = data[1] * color.mV[1];
+        const float c2 = data[2] * color.mV[2];
+        data[0] = llclamp((U8)c0, 0, 255);
+        data[1] = llclamp((U8)c1, 0, 255);
+        data[2] = llclamp((U8)c2, 0, 255);
+        data += components;
+    }
+}
+
 LLPointer<LLImageRaw> LLImageRaw::duplicate()
 {
     if(getNumRefs() < 2)
@@ -1794,6 +1869,73 @@ void LLImageRaw::compositeRowScaled4onto3( U8* in, U8* out, S32 in_pixel_len, S3
     }
 }
 
+
+void LLImageRaw::addEmissive(LLImageRaw* src)
+{
+    LLImageRaw* dst = this;  // Just for clarity.
+
+    if (!validateSrcAndDst(__FUNCTION__, src, dst))
+    {
+        return;
+    }
+
+    llassert((3 == src->getComponents()) || (4 == src->getComponents()));
+    llassert(3 == dst->getComponents());
+
+    if( 3 == dst->getComponents() )
+    {
+        if( (src->getWidth() == dst->getWidth()) && (src->getHeight() == dst->getHeight()) )
+        {
+            addEmissiveUnscaled(src);
+        }
+        else
+        {
+            addEmissiveScaled(src);
+        }
+    }
+}
+
+void LLImageRaw::addEmissiveUnscaled(LLImageRaw* src)
+{
+    LLImageRaw* dst = this;  // Just for clarity.
+
+    llassert((3 == src->getComponents()) || (4 == src->getComponents()));
+    llassert((3 == dst->getComponents()) || (4 == dst->getComponents()));
+    llassert( (src->getWidth() == dst->getWidth()) && (src->getHeight() == dst->getHeight()) );
+
+    U8* const src_data = src->getData();
+    U8* const dst_data = dst->getData();
+    for(S32 y = 0; y < dst->getHeight(); ++y)
+    {
+        const S32 src_row_offset = src->getComponents() * src->getWidth() * y;
+        const S32 dst_row_offset = dst->getComponents() * dst->getWidth() * y;
+        for (S32 x = 0; x < dst->getWidth(); ++x)
+        {
+            const S32 src_offset = src_row_offset + (x * src->getComponents());
+            const S32 dst_offset = dst_row_offset + (x * dst->getComponents());
+            U8* const src_pixel = src_data + src_offset;
+            U8* const dst_pixel = dst_data + dst_offset;
+            dst_pixel[0] = llmin(255, dst_pixel[0] + src_pixel[0]);
+            dst_pixel[1] = llmin(255, dst_pixel[1] + src_pixel[1]);
+            dst_pixel[2] = llmin(255, dst_pixel[2] + src_pixel[2]);
+        }
+    }
+}
+
+void LLImageRaw::addEmissiveScaled(LLImageRaw* src)
+{
+    LLImageRaw* dst = this;  // Just for clarity.
+
+    llassert( (4 == src->getComponents()) && (3 == dst->getComponents()) );
+
+    LLImageRaw temp(dst->getWidth(), dst->getHeight(), dst->getComponents());
+    llassert_always(temp.getDataSize() > 0);
+    temp.copyScaled(src);
+
+    dst->addEmissiveUnscaled(&temp);
+}
+
+
 bool LLImageRaw::validateSrcAndDst(std::string func, LLImageRaw* src, LLImageRaw* dst)
 {
     if (!src || !dst || src->isBufferInvalid() || dst->isBufferInvalid())
diff --git a/indra/llimage/llimage.h b/indra/llimage/llimage.h
index 0335be8d2f..9b16711b85 100644
--- a/indra/llimage/llimage.h
+++ b/indra/llimage/llimage.h
@@ -33,7 +33,7 @@
 #include "lltrace.h"
 
 const S32 MIN_IMAGE_MIP =  2; // 4x4, only used for expand/contract power of 2
-const S32 MAX_IMAGE_MIP = 11; // 2048x2048
+const S32 MAX_IMAGE_MIP = 12; // 4096x4096
 
 // *TODO : Use MAX_IMAGE_MIP as max discard level and modify j2c management so that the number
 // of levels is read from the header's file, not inferred from its size.
@@ -44,7 +44,7 @@ const S32 MAX_DISCARD_LEVEL = 5;
 // and declared right here. Some come from the JPEG2000 spec, some conventions specific to SL.
 const S32 MAX_DECOMPOSITION_LEVELS = 32;    // Number of decomposition levels cannot exceed 32 according to jpeg2000 spec
 const S32 MIN_DECOMPOSITION_LEVELS = 5;     // the SL viewer will *crash* trying to decode images with fewer than 5 decomposition levels (unless image is small that is)
-const S32 MAX_PRECINCT_SIZE = 2048;         // No reason to be bigger than MAX_IMAGE_SIZE
+const S32 MAX_PRECINCT_SIZE = 4096;         // No reason to be bigger than MAX_IMAGE_SIZE
 const S32 MIN_PRECINCT_SIZE = 4;            // Can't be smaller than MIN_BLOCK_SIZE
 const S32 MAX_BLOCK_SIZE = 64;              // Max total block size is 4096, hence 64x64 when using square blocks
 const S32 MIN_BLOCK_SIZE = 4;               // Min block dim is 4 according to jpeg2000 spec
@@ -52,11 +52,11 @@ const S32 MIN_LAYER_SIZE = 2000;            // Size of the first quality layer (
 const S32 MAX_NB_LAYERS = 64;               // Max number of layers we'll entertain in SL (practical limit)
 
 const S32 MIN_IMAGE_SIZE = (1<<MIN_IMAGE_MIP); // 4, only used for expand/contract power of 2
-const S32 MAX_IMAGE_SIZE = (1<<MAX_IMAGE_MIP); // 2048
+const S32 MAX_IMAGE_SIZE = (1<<MAX_IMAGE_MIP); // 4096
 const S32 MIN_IMAGE_AREA = MIN_IMAGE_SIZE * MIN_IMAGE_SIZE;
 const S32 MAX_IMAGE_AREA = MAX_IMAGE_SIZE * MAX_IMAGE_SIZE;
 const S32 MAX_IMAGE_COMPONENTS = 8;
-const S32 MAX_IMAGE_DATA_SIZE = MAX_IMAGE_AREA * MAX_IMAGE_COMPONENTS; //2048 * 2048 * 8 = 16 MB
+const S32 MAX_IMAGE_DATA_SIZE = MAX_IMAGE_AREA * MAX_IMAGE_COMPONENTS; //4096 * 4096 * 8 = 128 MB
 
 // Note!  These CANNOT be changed without modifying simulator code
 // *TODO: change both to 1024 when SIM texture fetching is deprecated
@@ -71,6 +71,7 @@ const S32 HTTP_PACKET_SIZE = 1496;
 class LLImageFormatted;
 class LLImageRaw;
 class LLColor4U;
+class LLColor3;
 
 typedef enum e_image_codec
 {
@@ -208,9 +209,13 @@ public:
 
     void verticalFlip();
 
+    // Returns true if the image is not fully opaque
+    bool checkHasTransparentPixels();
     // if the alpha channel is all 100% opaque, delete it
     // returns true if alpha channel was deleted
     bool optimizeAwayAlpha();
+    // Create an alpha channel if this image doesn't have one
+    bool makeAlpha();
 
     static S32 biasedDimToPowerOfTwo(S32 curr_dim, S32 max_dim = MAX_IMAGE_SIZE);
     static S32 expandDimToPowerOfTwo(S32 curr_dim, S32 max_dim = MAX_IMAGE_SIZE);
@@ -224,6 +229,9 @@ public:
     // Fill the buffer with a constant color
     void fill( const LLColor4U& color );
 
+    // Multiply this raw image by the given color
+    void tint( const LLColor3& color );
+
     // Copy operations
 
     //duplicate this raw image if refCount > 1.
@@ -267,6 +275,12 @@ public:
     // Src and dst are same size.  Src has 4 components.  Dst has 3 components.
     void compositeUnscaled4onto3( LLImageRaw* src );
 
+    // Emissive operations used by minimap
+    // Roughly emulates GLTF emissive texture, but is not GLTF-compliant
+    // *TODO: Remove in favor of shader
+    void addEmissive(LLImageRaw* src);
+    void addEmissiveScaled(LLImageRaw* src);
+    void addEmissiveUnscaled(LLImageRaw* src);
 protected:
     // Create an image from a local file (generally used in tools)
     //bool createFromFile(const std::string& filename, bool j2c_lowest_mip_only = false);