diff options
Diffstat (limited to 'source/blender/editors/screen/glutil.c')
| -rw-r--r-- | source/blender/editors/screen/glutil.c | 78 |
1 files changed, 56 insertions, 22 deletions
diff --git a/source/blender/editors/screen/glutil.c b/source/blender/editors/screen/glutil.c index 2b55fc2ca6d..06da91c3e37 100644 --- a/source/blender/editors/screen/glutil.c +++ b/source/blender/editors/screen/glutil.c @@ -32,7 +32,6 @@ #include "MEM_guardedalloc.h" #include "DNA_vec_types.h" -#include "DNA_listBase.h" #include "BKE_utildefines.h" #include "BKE_colortools.h" @@ -428,10 +427,9 @@ void glaDrawPixelsTexScaled(float x, float y, int img_w, int img_h, int format, int ltexid= glaGetOneInteger(GL_TEXTURE_2D); int lrowlength= glaGetOneInteger(GL_UNPACK_ROW_LENGTH); int subpart_x, subpart_y, tex_w, tex_h; + int seamless, offset_x, offset_y, nsubparts_x, nsubparts_y; int texid= get_cached_work_texture(&tex_w, &tex_h); - int nsubparts_x= (img_w+(tex_w-1))/tex_w; - int nsubparts_y= (img_h+(tex_h-1))/tex_h; - + /* Specify the color outside this function, and tex will modulate it. * This is useful for changing alpha without using glPixelTransferf() */ @@ -448,31 +446,67 @@ void glaDrawPixelsTexScaled(float x, float y, int img_w, int img_h, int format, glPixelZoom(1.f, 1.f); #endif + /* setup seamless 2=on, 0=off */ + seamless= ((tex_w<img_w || tex_h<img_h) && tex_w>2 && tex_h>2)? 2: 0; + + offset_x= tex_w - seamless; + offset_y= tex_h - seamless; + + nsubparts_x= (img_w + (offset_x - 1))/(offset_x); + nsubparts_y= (img_h + (offset_y - 1))/(offset_y); + for (subpart_y=0; subpart_y<nsubparts_y; subpart_y++) { for (subpart_x=0; subpart_x<nsubparts_x; subpart_x++) { - int subpart_w= (subpart_x==nsubparts_x-1)?(img_w-subpart_x*tex_w):tex_w; - int subpart_h= (subpart_y==nsubparts_y-1)?(img_h-subpart_y*tex_h):tex_h; - float rast_x= x+subpart_x*tex_w*xzoom; - float rast_y= y+subpart_y*tex_h*yzoom; + int remainder_x= img_w-subpart_x*offset_x; + int remainder_y= img_h-subpart_y*offset_y; + int subpart_w= (remainder_x<tex_w)? remainder_x: tex_w; + int subpart_h= (remainder_y<tex_h)? remainder_y: tex_h; + int offset_left= (seamless && subpart_x!=0)? 1: 0; + int offset_bot= (seamless && subpart_y!=0)? 1: 0; + int offset_right= (seamless && remainder_x>tex_w)? 1: 0; + int offset_top= (seamless && remainder_y>tex_h)? 1: 0; + float rast_x= x+subpart_x*offset_x*xzoom; + float rast_y= y+subpart_y*offset_y*yzoom; - if(format==GL_FLOAT) - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, subpart_w, subpart_h, GL_RGBA, GL_FLOAT, &f_rect[(subpart_y*tex_w)*img_w*4 + (subpart_x*tex_w)*4]); - else - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, subpart_w, subpart_h, GL_RGBA, GL_UNSIGNED_BYTE, &uc_rect[(subpart_y*tex_w)*img_w*4 + (subpart_x*tex_w)*4]); - + /* check if we already got these because we always get 2 more when doing seamless*/ + if(subpart_w<=seamless || subpart_h<=seamless) + continue; + + if(format==GL_FLOAT) { + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, subpart_w, subpart_h, GL_RGBA, GL_FLOAT, &f_rect[subpart_y*offset_y*img_w*4 + subpart_x*offset_x*4]); + + /* add an extra border of pixels so linear looks ok at edges of full image. */ + if(subpart_w<tex_w) + glTexSubImage2D(GL_TEXTURE_2D, 0, subpart_w, 0, 1, subpart_h, GL_RGBA, GL_FLOAT, &f_rect[subpart_y*offset_y*img_w*4 + (subpart_x*offset_x+subpart_w-1)*4]); + if(subpart_h<tex_h) + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, subpart_h, subpart_w, 1, GL_RGBA, GL_FLOAT, &f_rect[(subpart_y*offset_y+subpart_h-1)*img_w*4 + subpart_x*offset_x*4]); + if(subpart_w<tex_w && subpart_h<tex_h) + glTexSubImage2D(GL_TEXTURE_2D, 0, subpart_w, subpart_h, 1, 1, GL_RGBA, GL_FLOAT, &f_rect[(subpart_y*offset_y+subpart_h-1)*img_w*4 + (subpart_x*offset_x+subpart_w-1)*4]); + } + else { + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, subpart_w, subpart_h, GL_RGBA, GL_UNSIGNED_BYTE, &uc_rect[subpart_y*offset_y*img_w*4 + subpart_x*offset_x*4]); + + if(subpart_w<tex_w) + glTexSubImage2D(GL_TEXTURE_2D, 0, subpart_w, 0, 1, subpart_h, GL_RGBA, GL_UNSIGNED_BYTE, &uc_rect[subpart_y*offset_y*img_w*4 + (subpart_x*offset_x+subpart_w-1)*4]); + if(subpart_h<tex_h) + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, subpart_h, subpart_w, 1, GL_RGBA, GL_UNSIGNED_BYTE, &uc_rect[(subpart_y*offset_y+subpart_h-1)*img_w*4 + subpart_x*offset_x*4]); + if(subpart_w<tex_w && subpart_h<tex_h) + glTexSubImage2D(GL_TEXTURE_2D, 0, subpart_w, subpart_h, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &uc_rect[(subpart_y*offset_y+subpart_h-1)*img_w*4 + (subpart_x*offset_x+subpart_w-1)*4]); + } + glEnable(GL_TEXTURE_2D); glBegin(GL_QUADS); - glTexCoord2f(0, 0); - glVertex2f(rast_x, rast_y); + glTexCoord2f((float)(0 + offset_left)/tex_w, (float)(0 + offset_bot)/tex_h); + glVertex2f(rast_x + (float)offset_left*xzoom, rast_y + (float)offset_bot*xzoom); - glTexCoord2f((float) (subpart_w-1)/tex_w, 0); - glVertex2f(rast_x+subpart_w*xzoom*scaleX, rast_y); + glTexCoord2f((float)(subpart_w - offset_right)/tex_w, (float)(0 + offset_bot)/tex_h); + glVertex2f(rast_x + (float)(subpart_w - offset_right)*xzoom*scaleX, rast_y + (float)offset_bot*xzoom); - glTexCoord2f((float) (subpart_w-1)/tex_w, (float) (subpart_h-1)/tex_h); - glVertex2f(rast_x+subpart_w*xzoom*scaleX, rast_y+subpart_h*yzoom*scaleY); + glTexCoord2f((float)(subpart_w - offset_right)/tex_w, (float)(subpart_h - offset_top)/tex_h); + glVertex2f(rast_x + (float)(subpart_w - offset_right)*xzoom*scaleX, rast_y + (float)(subpart_h - offset_top)*yzoom*scaleY); - glTexCoord2f(0, (float) (subpart_h-1)/tex_h); - glVertex2f(rast_x, rast_y+subpart_h*yzoom*scaleY); + glTexCoord2f((float)(0 + offset_left)/tex_w, (float)(subpart_h - offset_top)/tex_h); + glVertex2f(rast_x + (float)offset_left*xzoom, rast_y + (float)(subpart_h - offset_top)*yzoom*scaleY); glEnd(); glDisable(GL_TEXTURE_2D); } @@ -506,7 +540,7 @@ void glaDrawPixelsSafe_to32(float fx, float fy, int img_w, int img_h, int row_w, floatbuf_to_srgb_byte(rectf, rect32, 0, img_w, 0, img_h, img_w); } else { floatbuf_to_byte(rectf, rect32, 0, img_w, 0, img_h, img_w); - } + } glaDrawPixelsSafe(fx, fy, img_w, img_h, img_w, GL_RGBA, GL_UNSIGNED_BYTE, rect32); |