Revision: 58989
          
http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=58989
Author:   nazgul
Date:     2013-08-07 07:45:26 +0000 (Wed, 07 Aug 2013)
Log Message:
-----------
Make byte-float ocnversion threaded in compositor

In fact, there's no need to get float buffer at all,
conversion could be done in pixel processor level
after interpolation.

It might give slightly worse interpolation results
(which i'm not sure would be visible by eye) but
it gives more than 2x speedup on my laptop on node
setups used for warping image.

Modified Paths:
--------------
    
branches/soc-2011-tomato/source/blender/compositor/operations/COM_ImageOperation.cpp
    
branches/soc-2011-tomato/source/blender/compositor/operations/COM_ImageOperation.h
    
branches/soc-2011-tomato/source/blender/compositor/operations/COM_MultilayerImageOperation.cpp

Modified: 
branches/soc-2011-tomato/source/blender/compositor/operations/COM_ImageOperation.cpp
===================================================================
--- 
branches/soc-2011-tomato/source/blender/compositor/operations/COM_ImageOperation.cpp
        2013-08-07 07:45:17 UTC (rev 58988)
+++ 
branches/soc-2011-tomato/source/blender/compositor/operations/COM_ImageOperation.cpp
        2013-08-07 07:45:26 UTC (rev 58989)
@@ -40,7 +40,8 @@
 {
        this->m_image = NULL;
        this->m_buffer = NULL;
-       this->m_imageBuffer = NULL;
+       this->m_imageFloatBuffer = NULL;
+       this->m_imageByteBuffer = NULL;
        this->m_imageUser = NULL;
        this->m_imagewidth = 0;
        this->m_imageheight = 0;
@@ -70,10 +71,6 @@
                BKE_image_release_ibuf(this->m_image, ibuf, NULL);
                return NULL;
        }
-       
-       if (ibuf->rect_float == NULL) {
-               IMB_float_from_rect(ibuf);
-       }
        return ibuf;
 }
 
@@ -83,7 +80,8 @@
        ImBuf *stackbuf = getImBuf();
        this->m_buffer = stackbuf;
        if (stackbuf) {
-               this->m_imageBuffer = stackbuf->rect_float;
+               this->m_imageFloatBuffer = stackbuf->rect_float;
+               this->m_imageByteBuffer = stackbuf->rect;
                this->m_depthBuffer = stackbuf->zbuf_float;
                this->m_imagewidth = stackbuf->x;
                this->m_imageheight = stackbuf->y;
@@ -93,7 +91,8 @@
 
 void BaseImageOperation::deinitExecution()
 {
-       this->m_imageBuffer = NULL;
+       this->m_imageFloatBuffer = NULL;
+       this->m_imageByteBuffer = NULL;
        BKE_image_release_ibuf(this->m_image, this->m_buffer, NULL);
 }
 
@@ -112,46 +111,61 @@
        BKE_image_release_ibuf(this->m_image, stackbuf, NULL);
 }
 
-void ImageOperation::executePixel(float output[4], float x, float y, 
PixelSampler sampler)
+static void sampleImageAtLocation(ImBuf *ibuf, float x, float y, PixelSampler 
sampler, bool make_linear_rgb, float color[4])
 {
-       if (this->m_imageBuffer == NULL || x < 0 || y < 0 || x >= 
this->getWidth() || y >= this->getHeight() ) {
-               zero_v4(output);
+       if (ibuf->rect_float) {
+               switch (sampler) {
+                       case COM_PS_NEAREST:
+                               nearest_interpolation_color(ibuf, NULL, color, 
x, y);
+                               break;
+                       case COM_PS_BILINEAR:
+                               bilinear_interpolation_color(ibuf, NULL, color, 
x, y);
+                               break;
+                       case COM_PS_BICUBIC:
+                               bicubic_interpolation_color(ibuf, NULL, color, 
x, y);
+                               break;
+               }
        }
        else {
+               unsigned char byte_color[4];
                switch (sampler) {
                        case COM_PS_NEAREST:
-                               nearest_interpolation_color(this->m_buffer, 
NULL, output, x, y);
+                               nearest_interpolation_color(ibuf, byte_color, 
NULL, x, y);
                                break;
                        case COM_PS_BILINEAR:
-                               bilinear_interpolation_color(this->m_buffer, 
NULL, output, x, y);
+                               bilinear_interpolation_color(ibuf, byte_color, 
NULL, x, y);
                                break;
                        case COM_PS_BICUBIC:
-                               bicubic_interpolation_color(this->m_buffer, 
NULL, output, x, y);
+                               bicubic_interpolation_color(ibuf, byte_color, 
NULL, x, y);
                                break;
                }
+               rgba_uchar_to_float(color, byte_color);
+               if (make_linear_rgb) {
+                       
IMB_colormanagement_colorspace_to_scene_linear_v4(color, FALSE, 
ibuf->rect_colorspace);
+               }
        }
 }
 
+void ImageOperation::executePixel(float output[4], float x, float y, 
PixelSampler sampler)
+{
+       if ((this->m_imageFloatBuffer == NULL && this->m_imageByteBuffer == 
NULL) || x < 0 || y < 0 || x >= this->getWidth() || y >= this->getHeight() ) {
+               zero_v4(output);
+       }
+       else {
+               sampleImageAtLocation(this->m_buffer, x, y, sampler, true, 
output);
+       }
+}
+
 void ImageAlphaOperation::executePixel(float output[4], float x, float y, 
PixelSampler sampler)
 {
        float tempcolor[4];
 
-       if (this->m_imageBuffer == NULL || x < 0 || y < 0 || x >= 
this->getWidth() || y >= this->getHeight() ) {
+       if ((this->m_imageFloatBuffer == NULL && this->m_imageByteBuffer == 
NULL) || x < 0 || y < 0 || x >= this->getWidth() || y >= this->getHeight() ) {
                output[0] = 0.0f;
        }
        else {
                tempcolor[3] = 1.0f;
-               switch (sampler) {
-                       case COM_PS_NEAREST:
-                               nearest_interpolation_color(this->m_buffer, 
NULL, tempcolor, x, y);
-                               break;
-                       case COM_PS_BILINEAR:
-                               bilinear_interpolation_color(this->m_buffer, 
NULL, tempcolor, x, y);
-                               break;
-                       case COM_PS_BICUBIC:
-                               bicubic_interpolation_color(this->m_buffer, 
NULL, tempcolor, x, y);
-                               break;
-               }
+               sampleImageAtLocation(this->m_buffer, x, y, sampler, false, 
tempcolor);
                output[0] = tempcolor[3];
        }
 }

Modified: 
branches/soc-2011-tomato/source/blender/compositor/operations/COM_ImageOperation.h
===================================================================
--- 
branches/soc-2011-tomato/source/blender/compositor/operations/COM_ImageOperation.h
  2013-08-07 07:45:17 UTC (rev 58988)
+++ 
branches/soc-2011-tomato/source/blender/compositor/operations/COM_ImageOperation.h
  2013-08-07 07:45:26 UTC (rev 58989)
@@ -42,7 +42,8 @@
        ImBuf *m_buffer;
        Image *m_image;
        ImageUser *m_imageUser;
-       float *m_imageBuffer;
+       float *m_imageFloatBuffer;
+       unsigned int *m_imageByteBuffer;
        float *m_depthBuffer;
        int m_imageheight;
        int m_imagewidth;

Modified: 
branches/soc-2011-tomato/source/blender/compositor/operations/COM_MultilayerImageOperation.cpp
===================================================================
--- 
branches/soc-2011-tomato/source/blender/compositor/operations/COM_MultilayerImageOperation.cpp
      2013-08-07 07:45:17 UTC (rev 58988)
+++ 
branches/soc-2011-tomato/source/blender/compositor/operations/COM_MultilayerImageOperation.cpp
      2013-08-07 07:45:26 UTC (rev 58989)
@@ -47,7 +47,7 @@
 {
        int yi = y;
        int xi = x;
-       if (this->m_imageBuffer == NULL || xi < 0 || yi < 0 || (unsigned int)xi 
>= this->getWidth() || (unsigned int)yi >= this->getHeight() ) {
+       if (this->m_imageFloatBuffer == NULL || xi < 0 || yi < 0 || (unsigned 
int)xi >= this->getWidth() || (unsigned int)yi >= this->getHeight() ) {
                zero_v4(output);
        }
        else {
@@ -66,7 +66,7 @@
                }
                else {
                        int offset = (yi * this->getWidth() + xi) * 3;
-                       copy_v3_v3(output, &this->m_imageBuffer[offset]);
+                       copy_v3_v3(output, &this->m_imageFloatBuffer[offset]);
                }
        }
 }
@@ -75,11 +75,11 @@
 {
        int yi = y;
        int xi = x;
-       if (this->m_imageBuffer == NULL || xi < 0 || yi < 0 || (unsigned int)xi 
>= this->getWidth() || (unsigned int)yi >= this->getHeight() ) {
+       if (this->m_imageFloatBuffer == NULL || xi < 0 || yi < 0 || (unsigned 
int)xi >= this->getWidth() || (unsigned int)yi >= this->getHeight() ) {
                output[0] = 0.0f;
        }
        else {
-               float result = this->m_imageBuffer[yi * this->getWidth() + xi];
+               float result = this->m_imageFloatBuffer[yi * this->getWidth() + 
xi];
                output[0] = result;
        }
 }
@@ -88,11 +88,11 @@
 {
        int yi = y;
        int xi = x;
-       if (this->m_imageBuffer == NULL || xi < 0 || yi < 0 || (unsigned int)xi 
>= this->getWidth() || (unsigned int)yi >= this->getHeight() ) {
+       if (this->m_imageFloatBuffer == NULL || xi < 0 || yi < 0 || (unsigned 
int)xi >= this->getWidth() || (unsigned int)yi >= this->getHeight() ) {
                output[0] = 0.0f;
        }
        else {
                int offset = (yi * this->getWidth() + xi) * 3;
-               copy_v3_v3(output, &this->m_imageBuffer[offset]);
+               copy_v3_v3(output, &this->m_imageFloatBuffer[offset]);
        }
 }

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