Author: Nikita Kitaev <nikita...@gmail.com>
Date: Tue Mar 22 20:55:34 2011 -0700
Do color conversion when cairo output is in the wrong format
---
synfig-core/src/synfig/target_scanline.cpp | 38 +++++++++++++++++++++------
1 files changed, 29 insertions(+), 9 deletions(-)
diff --git a/synfig-core/src/synfig/target_scanline.cpp
b/synfig-core/src/synfig/target_scanline.cpp
index c74ba22..1d36352 100644
--- a/synfig-core/src/synfig/target_scanline.cpp
+++ b/synfig-core/src/synfig/target_scanline.cpp
@@ -466,6 +466,13 @@ Target_Scanline::add_frame(const unsigned char *data,
const unsigned int width,
return false;
}
+ PixelFormat cairo_data_format = (PF_RGB | PF_A | PF_8BITS);
+ int cairo_pixel_size = 4;
+
+ int pixel_size = channels(target_format_);
+ if ( target_format_ && PF_16BITS) pixel_size *= 2;
+ if ( target_format_ && PF_32BITS) pixel_size *= 4;
+
for (unsigned int y = 0; y < height; y++)
{
unsigned char *colordata= start_scanline_rgba(y);
@@ -475,17 +482,30 @@ Target_Scanline::add_frame(const unsigned char *data,
const unsigned int width,
return false;
}
- // TODO: Add a fragment shader to remove the alpha (OpenGL)
- /*if(get_remove_alpha())
+ if ( target_format_ == cairo_data_format )
{
- for(int i=0;i<surface->get_w();i++)
-
colordata[i]=Color::blend((*surface)[y][i],desc.get_bg_color(),1.0f);
+ // Same format as cairo data
+ memcpy(colordata, data + (stride * y), width *
cairo_pixel_size);
+ }
+ else
+ {
+ // Cairo data format and target format are not the same
+ // Perform a (slow) color conversion
+ for (unsigned int x = 0; x < width; x++)
+ {
+ Color c;
+ PixelFormat2Color(c,
+ cairo_data_format,
+ data + y * stride + x * cairo_pixel_size
+ );
+
+ Color2PixelFormat(c,
+
target_format_,
+ colordata + x
* pixel_size,
+ gamma()
+ );
+ }
}
- else*/
- // TODO: If target needs data in other way than RGBA,
convert using another fragment shader (OpenGL)
-
- memcpy(colordata, data + (stride * y), width * 4);
- // ARGB is 4 channels x 8 bits
if(!end_scanline_rgba())
{
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