Giant commit!

A full detailed description of this will be done later... is several days
of work. Here's a summary:

Render:
- Full cleanup of render code, removing *all* globals and bad level calls
  all over blender. Render module is now not called abusive anymore
- API-fied calls to rendering
- Full recode of internal render pipeline. Is now rendering tiles by
  default, prepared for much smarter 'bucket' render later.
- Each thread now can render a full part
- Renders were tested with 4 threads, goes fine, apart from some lookup
  tables in softshadow and AO still
- Rendering is prepared to do multiple layers and passes
- No single 32 bits trick in render code anymore, all 100% floats now.

Writing images/movies
- moved writing images to blender kernel (bye bye 'schrijfplaatje'!)
- made a new Movie handle system, also in kernel. This will enable much
  easier use of movies in Blender

PreviewRender:
- Using new render API, previewrender (in buttons) now uses regular render
  code to generate images.
- new datafile 'preview.blend.c' has the preview scenes in it
- previews get rendered in exact displayed size (1 pixel = 1 pixel)

3D Preview render
- new; press Pkey in 3d window, for a panel that continuously renders
  (pkey is for games, i know... but we dont do that in orange now!)
- this render works nearly identical to buttons-preview render, so it stops
  rendering on any event (mouse, keyboard, etc)
- on moving/scaling the panel, the render code doesn't recreate all geometry
- same for shifting/panning view
- all other operations (now) regenerate the full render database still.
- this is WIP... but big fun, especially for simple scenes!

Compositor
- Using same node system as now in use for shaders, you can composit images
- works pretty straightforward... needs much more options/tools and integration
  with rendering still
- is not threaded yet, nor is so smart to only recalculate changes... will be
  done soon!
- the "Render Result" node will get all layers/passes as output sockets
- The "Output" node renders to a builtin image, which you can view in the Image
  window. (yes, output nodes to render-result, and to files, is on the list!)

The Bad News
- "Unified Render" is removed. It might come back in some stage, but this
  system should be built from scratch. I can't really understand this code...
  I expect it is not much needed, especially with advanced layer/passes
  control
- Panorama render, Field render, Motion blur, is not coded yet... (I had to
  recode every single feature in render, so...!)
- Lens Flare is also not back... needs total revision, might become composit
  effect though (using zbuffer for visibility)
- Part render is gone! (well, thats obvious, its default now).
- The render window is only restored with limited functionality... I am going
  to check first the option to render to a Image window, so Blender can become
  a true single-window application. :)
  For example, the 'Spare render buffer' (jkey) doesnt work.
- Render with border, now default creates a smaller image
- No zbuffers are written yet... on the todo!
- Scons files and MSVC will need work to get compiling again

OK... thats what I can quickly recall. Now go compiling!

1 files changed, 15 insertions, 6 deletions

diff --git a/source/blender/imbuf/intern/radiance_hdr.c b/source/blender/imbuf/intern/radiance_hdr.c
index a90d7d651f8..bd2d41881db 100644
--- a/source/blender/imbuf/intern/radiance_hdr.c
+++ b/source/blender/imbuf/intern/radiance_hdr.c
@@ -197,8 +197,8 @@ struct ImBuf *imb_loadhdr(unsigned char *mem, int size, int flags)
 			ptr = (unsigned char *)strchr((char*)&mem[x+1], '\n');
 			ptr++;
 
-			if (flags & IB_test) ibuf = IMB_allocImBuf(width, height, 24, 0, 0);
-			else ibuf = IMB_allocImBuf(width, height, 24, IB_rect|IB_rectfloat, 0);
+			if (flags & IB_test) ibuf = IMB_allocImBuf(width, height, 32, 0, 0);
+			else ibuf = IMB_allocImBuf(width, height, 32, IB_rect|IB_rectfloat, 0);
 
 			if (ibuf==NULL) return NULL;
 			ibuf->ftype = RADHDR;
@@ -224,7 +224,7 @@ struct ImBuf *imb_loadhdr(unsigned char *mem, int size, int flags)
 					*rect_float++ = fcol[RED];
 					*rect_float++ = fcol[GRN];
 					*rect_float++ = fcol[BLU];
-					*rect_float++ = 255;
+					*rect_float++ = 1.0f;
 
 					/* Also old oldstyle for the rest of blender which is not using floats yet */
 /* very weird mapping! (ton) */
@@ -339,19 +339,28 @@ static void writeHeader(FILE *file, int width, int height)
 
 short imb_savehdr(struct ImBuf *ibuf, char *name, int flags)
 {
-	int y, width=ibuf->x, height=ibuf->y;
 	FILE* file = fopen(name, "wb");
-
+	float *fp= NULL;
+	int y, width=ibuf->x, height=ibuf->y;
+	char *cp= NULL;
+	
 	if (file==NULL) return 0;
 
 	writeHeader(file, width, height);
 
+	if(ibuf->rect)
+		cp= (char *)(ibuf->rect + (height-1)*width);
+	if(ibuf->rect_float)
+		fp= ibuf->rect_float + 4*(height-1)*width;
+	
 	for (y=height-1;y>=0;y--) {
-		if (fwritecolrs(file, width,(unsigned char *)&ibuf->rect[y*width*4], &ibuf->rect_float[y*width*4]) < 0) {
+		if (fwritecolrs(file, width, cp, fp) < 0) {
 			fclose(file);
 			printf("HDR write error\n");
 			return 0;
 		}
+		if(cp) cp-= 4*width;
+		if(fp) fp-= 4*width;
 	}
 
 	fclose(file);