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Draw checker backdrop for sequencer when in RGBA mode

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This commit is contained in:
Sergey Sharybin 2013-04-01 09:15:37 +00:00
parent c7e2a31bf2
commit 3657f3d938
1 changed files with 12 additions and 9 deletions
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21
source/blender/editors/space_sequencer/sequencer_draw.c
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@ -1050,6 +1050,17 @@ void draw_image_seq(const bContext *C, Scene *scene, ARegion *ar, SpaceSeq *sseq
/* setting up the view - actual drawing starts here */
UI_view2d_view_ortho(v2d);
/* only draw alpha for main buffer */
if (sseq->mainb == SEQ_DRAW_IMG_IMBUF) {
if (sseq->flag & SEQ_USE_ALPHA) {
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
fdrawcheckerboard(v2d->tot.xmin, v2d->tot.ymin, v2d->tot.xmax, v2d->tot.ymax);
glColor4f(1.0, 1.0, 1.0, 1.0);
}
}
last_texid = glaGetOneInteger(GL_TEXTURE_2D);
glEnable(GL_TEXTURE_2D);
glGenTextures(1, (GLuint *)&texid);
@ -1061,14 +1072,6 @@ void draw_image_seq(const bContext *C, Scene *scene, ARegion *ar, SpaceSeq *sseq
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, ibuf->x, ibuf->y, 0, GL_RGBA, GL_UNSIGNED_BYTE, display_buffer);
/* only draw alpha for main buffer */
if (sseq->mainb == SEQ_DRAW_IMG_IMBUF) {
if (sseq->flag & SEQ_USE_ALPHA) {
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
}
glBegin(GL_QUADS);
if (draw_overlay) {
@ -1100,7 +1103,7 @@ void draw_image_seq(const bContext *C, Scene *scene, ARegion *ar, SpaceSeq *sseq
glEnd();
glBindTexture(GL_TEXTURE_2D, last_texid);
glDisable(GL_TEXTURE_2D);
if (sseq->flag & SEQ_USE_ALPHA)
if (sseq->mainb == SEQ_DRAW_IMG_IMBUF && sseq->flag & SEQ_USE_ALPHA)
glDisable(GL_BLEND);
glDeleteTextures(1, &texid);