Commit: 005626b8c6b4e9af92ffc07d0b3f2b0a1c8dc4b8
Author: Richard Antalik
Date:   Wed Feb 27 13:48:27 2019 -0800
Branches: master
https://developer.blender.org/rB005626b8c6b4e9af92ffc07d0b3f2b0a1c8dc4b8

Refactors preview drawing code with few functional modifications:

Fix T61241

 - Changing preview size does not affect drawn image size, only resolution.
 -- Consistent behavior, when changing full-size / proxy / scene render size
 -- Scopes are rendered in *same size* as source image
 -- Over all, user does not have to readjust preview zoom.

Reviewed by: Brecht

Differential revision: https://developer.blender.org/D4315

===================================================================

M       source/blender/editors/space_sequencer/sequencer_draw.c
M       source/blender/editors/space_sequencer/sequencer_intern.h
M       source/blender/editors/space_sequencer/space_sequencer.c

===================================================================

diff --git a/source/blender/editors/space_sequencer/sequencer_draw.c 
b/source/blender/editors/space_sequencer/sequencer_draw.c
index 089a30bcf5e..fc33ec398b0 100644
--- a/source/blender/editors/space_sequencer/sequencer_draw.c
+++ b/source/blender/editors/space_sequencer/sequencer_draw.c
@@ -985,30 +985,13 @@ static ImBuf *sequencer_make_scope(Scene *scene, ImBuf 
*ibuf, ImBuf *(*make_scop
        return scope;
 }
 
-static void sequencer_display_size(Scene *scene, SpaceSeq *sseq, float 
r_viewrect[2])
+static void sequencer_display_size(Scene *scene, float r_viewrect[2])
 {
-       float render_size, proxy_size;
+       r_viewrect[0] = (float)scene->r.xsch;
+       r_viewrect[1] = (float)scene->r.ysch;
 
-       if (sseq->render_size == SEQ_PROXY_RENDER_SIZE_SCENE) {
-               render_size = (float)scene->r.size / 100.0f;
-               proxy_size = 1.0f;
-       }
-       else {
-               render_size = (float)sseq->render_size / 100.0f;
-               proxy_size = render_size;
-       }
-
-       r_viewrect[0] = (render_size * (float)scene->r.xsch);
-       r_viewrect[1] = (render_size * (float)scene->r.ysch);
-
-       /* rectx = viewrectx + 0.5f; */ /* UNUSED */
-       /* recty = viewrecty + 0.5f; */ /* UNUSED */
-
-       if (sseq->mainb == SEQ_DRAW_IMG_IMBUF) {
-               r_viewrect[0] *= scene->r.xasp / scene->r.yasp;
-               r_viewrect[0] /= proxy_size;
-               r_viewrect[1] /= proxy_size;
-       }
+       /* Aspect ratio seems to have no effect on output image*/
+       /* r_viewrect[0] *= scene->r.xasp / scene->r.yasp; */
 }
 
 static void sequencer_draw_gpencil(const bContext *C)
@@ -1069,43 +1052,105 @@ static void sequencer_draw_borders(const SpaceSeq 
*sseq, const View2D *v2d, cons
        immUnbindProgram();
 }
 
-/* draws checkerboard background for transparent content */
-static void sequencer_draw_background(
-        const SpaceSeq *sseq, View2D *v2d, const float viewrect[2], const bool 
draw_overlay)
+#if 0
+void sequencer_draw_maskedit(const bContext *C, Scene *scene, ARegion *ar, 
SpaceSeq *sseq)
 {
-       /* setting up the view */
-       UI_view2d_totRect_set(v2d, viewrect[0] + 0.5f, viewrect[1] + 0.5f);
-       UI_view2d_curRect_validate(v2d);
-       UI_view2d_view_ortho(v2d);
+       /* NOTE: sequencer mask editing isnt finished, the draw code is working 
but editing not,
+       * for now just disable drawing since the strip frame will likely be 
offset */
 
-       /* only draw alpha for main buffer */
-       if (sseq->mainb == SEQ_DRAW_IMG_IMBUF) {
-               if ((sseq->flag & SEQ_USE_ALPHA) && !draw_overlay) {
-                       imm_draw_box_checker_2d(v2d->tot.xmin, v2d->tot.ymin, 
v2d->tot.xmax, v2d->tot.ymax);
+       // if (sc->mode == SC_MODE_MASKEDIT)
+       if (0 && sseq->mainb == SEQ_DRAW_IMG_IMBUF) {
+               Mask *mask = BKE_sequencer_mask_get(scene);
+
+               if (mask) {
+                       int width, height;
+                       float aspx = 1.0f, aspy = 1.0f;
+                       // ED_mask_get_size(C, &width, &height);
+
+                       //Scene *scene = CTX_data_scene(C);
+                       width = (scene->r.size * scene->r.xsch) / 100;
+                       height = (scene->r.size * scene->r.ysch) / 100;
+
+                       ED_mask_draw_region(mask, ar,
+                               0, 0, 0,  /* TODO */
+                               width, height,
+                               aspx, aspy,
+                               false, true,
+                               NULL, C);
                }
        }
 }
+#endif
 
-void draw_image_seq(const bContext *C, Scene *scene, ARegion *ar, SpaceSeq 
*sseq, int cfra, int frame_ofs, bool draw_overlay, bool draw_backdrop)
+static void *sequencer_OCIO_transform_ibuf(const bContext *C, ImBuf *ibuf, 
bool *glsl_used, int *format, int *type)
 {
-       struct Main *bmain = CTX_data_main(C);
-       struct Depsgraph *depsgraph = CTX_data_depsgraph(C);
-       struct ImBuf *ibuf = NULL;
-       struct ImBuf *scope = NULL;
-       struct View2D *v2d = &ar->v2d;
-       /* int rectx, recty; */ /* UNUSED */
-       float viewrect[2];
-       float col[3];
-       GLuint texid;
        void *display_buffer;
        void *cache_handle = NULL;
-       const bool is_imbuf = ED_space_sequencer_check_show_imbuf(sseq);
-       int format, type;
-       bool glsl_used = false;
-       const bool draw_gpencil = ((sseq->flag & SEQ_SHOW_GPENCIL) && 
sseq->gpd);
-       const char *names[2] = {STEREO_LEFT_NAME, STEREO_RIGHT_NAME};
-       bool draw_metadata = false;
+       bool force_fallback = false;
+       *glsl_used = false;
+       force_fallback |= (U.image_draw_method != IMAGE_DRAW_METHOD_GLSL);
+       force_fallback |= (ibuf->dither != 0.0f);
+
+       if (force_fallback) {
+               /* Fallback to CPU based color space conversion */
+               *glsl_used = false;
+               *format = GL_RGBA;
+               *type = GL_UNSIGNED_BYTE;
+               display_buffer = NULL;
+       }
+       else if (ibuf->rect_float) {
+               display_buffer = ibuf->rect_float;
+
+               if (ibuf->channels == 4) {
+                       *format = GL_RGBA;
+               }
+               else if (ibuf->channels == 3) {
+                       *format = GL_RGB;
+               }
+               else {
+                       BLI_assert(!"Incompatible number of channels for float 
buffer in sequencer");
+                       *format = GL_RGBA;
+                       display_buffer = NULL;
+               }
+
+               *type = GL_FLOAT;
+
+               if (ibuf->float_colorspace) {
+                       *glsl_used = 
IMB_colormanagement_setup_glsl_draw_from_space_ctx(C, ibuf->float_colorspace, 
ibuf->dither, true);
+               }
+               else {
+                       *glsl_used = IMB_colormanagement_setup_glsl_draw_ctx(C, 
ibuf->dither, true);
+               }
+       }
+       else if (ibuf->rect) {
+               display_buffer = ibuf->rect;
+               *format = GL_RGBA;
+               *type = GL_UNSIGNED_BYTE;
+
+               *glsl_used = 
IMB_colormanagement_setup_glsl_draw_from_space_ctx(C, ibuf->rect_colorspace, 
ibuf->dither, false);
+       }
+       else {
+               *format = GL_RGBA;
+               *type = GL_UNSIGNED_BYTE;
+               display_buffer = NULL;
+       }
+
+       /* there's a data to be displayed, but GLSL is not initialized
+        * properly, in this case we fallback to CPU-based display transform
+        */
+       if ((ibuf->rect || ibuf->rect_float) && !*glsl_used) {
+               display_buffer = IMB_display_buffer_acquire_ctx(C, ibuf, 
&cache_handle);
+               *format = GL_RGBA;
+               *type = GL_UNSIGNED_BYTE;
+       }
+       if (cache_handle)
+               IMB_display_buffer_release(cache_handle);
 
+       return display_buffer;
+}
+
+static void sequencer_stop_running_jobs(const bContext *C, Scene *scene)
+{
        if (G.is_rendering == false && (scene->r.seq_prev_type) == OB_RENDER) {
                /* stop all running jobs, except screen one. currently previews 
frustrate Render
                 * needed to make so sequencer's rendering doesn't conflict 
with compositor
@@ -1117,105 +1162,52 @@ void draw_image_seq(const bContext *C, Scene *scene, 
ARegion *ar, SpaceSeq *sseq
                 */
                WM_jobs_kill_type(CTX_wm_manager(C), NULL, 
WM_JOB_TYPE_RENDER_PREVIEW);
        }
+}
 
-       if ((!draw_overlay || sseq->overlay_type == SEQ_DRAW_OVERLAY_REFERENCE) 
&& !draw_backdrop) {
-               UI_GetThemeColor3fv(TH_SEQ_PREVIEW, col);
-               GPU_clear_color(col[0], col[1], col[2], 0.0);
-               GPU_clear(GPU_COLOR_BIT);
-       }
-
-       /* only initialize the preview if a render is in progress */
-       if (G.is_rendering)
-               return;
-
-       if (sseq->render_size == SEQ_PROXY_RENDER_SIZE_NONE) {
-               return;
-       }
-
-       /* for now we only support Left/Right */
-       ibuf = sequencer_ibuf_get(bmain, depsgraph, scene, sseq, cfra, 
frame_ofs, names[sseq->multiview_eye]);
+static void sequencer_preview_clear()
+{
+       float col[3];
 
-       if ((ibuf == NULL) ||
-           (ibuf->rect == NULL && ibuf->rect_float == NULL))
-       {
-               sequencer_display_size(scene, sseq, viewrect);
+       UI_GetThemeColor3fv(TH_SEQ_PREVIEW, col);
+       GPU_clear_color(col[0], col[1], col[2], 0.0);
+       GPU_clear(GPU_COLOR_BIT);
+}
 
-               sequencer_draw_background(sseq, v2d, viewrect, false);
-               sequencer_draw_borders(sseq, v2d, scene);
+static void sequencer_preview_get_rect(rctf *preview, Scene *scene, ARegion 
*ar, SpaceSeq *sseq, bool draw_overlay, bool draw_backdrop)
+{
+       struct View2D *v2d = &ar->v2d;
+       float viewrect[2];
 
-               /* gpencil can also be drawn without a valid imbuf */
-               if ((draw_gpencil && is_imbuf) && !draw_overlay) {
-                       sequencer_draw_gpencil(C);
-               }
+       sequencer_display_size(scene, viewrect);
+       BLI_rctf_init(preview, -1.0f, 1.0f, -1.0f, 1.0f);
 
-               UI_view2d_view_restore(C);
-               return;
+       if (draw_overlay && sseq->overlay_type == SEQ_DRAW_OVERLAY_RECT) {
+               preview->xmax = v2d->tot.xmin + 
(fabsf(BLI_rctf_size_x(&v2d->tot)) * scene->ed->over_border.xmax);
+               preview->xmin = v2d->tot.xmin + 
(fabsf(BLI_rctf_size_x(&v2d->tot)) * scene->ed->over_border.xmin);
+               preview->ymax = v2d->tot.ymin + 
(fabsf(BLI_rctf_size_y(&v2d->tot)) * scene->ed->over_border.ymax);
+               preview->ymin = v2d->tot.ymin + 
(fabsf(BLI_rctf_size_y(&v2d->tot)) * scene->ed->over_border.ymin);
        }
+       else if (draw_backdrop) {
+               float aspect = BLI_rcti_size_x(&ar->winrct) / 
(float)BLI_rcti_size_y(&ar->winrct);
+               float image_aspect = viewrect[0] / viewrect[1];
 
-       sequencer_display_size(scene, sseq, viewrect);
-
-       if (!draw_backdrop && (sseq->mainb != SEQ_DRAW_IMG_IMBUF || sseq->zebra 
!= 0)) {
-               SequencerScopes *scopes = &sseq->scopes;
-
-               sequencer_check_scopes(scopes, ibuf);
-
-               switch (sseq->mainb) {
-                       case SEQ_DRAW_IMG_IMBUF:
-                               if (!scopes->zebra_ibuf) {
-                                       ImBuf *display_ibuf = 
IMB_dupImBuf(ibuf);
-
-                                       if (display_ibuf->rect_float) {
-                                               
IMB_colormanagement_imbuf_make_display_space(display_ibuf, 
&scene->view_settings,
-                                                                               
             &scene->display_settings);
-                                       }
-                                       scopes->zebra_ibuf = 
make_zebra_view_from_ibuf(display_ibuf, sseq->zebra);
-                                       IMB_freeImBuf(display_ibuf);
-                               }
-                               scope = scopes->zebra_ibuf;
-                               break;
-                       case SEQ_DRAW_IMG_WAVEFORM:
-                               if ((sseq->flag & SEQ_DRAW_COLOR_SEPARATED) != 
0) {
-                                       if (!scopes->sep_waveform_ibuf)
-                                               scopes->sep_waveform_ibuf = 
sequencer_make_scope(scene, ibuf, make_sep_waveform_view_from_ibuf);
-                                       scope = scopes->sep_waveform_ibuf;
-                               }
-                               else {
-                                       if (!scopes->waveform_ibuf)
-                                               scopes->waveform_ibuf = 
sequencer_make_scope(scene, ibuf, make_waveform_view_from_ibuf);
-                                       scope = scopes->waveform_ibuf;
-                               }
-                               break;
-                       case SEQ_DRAW_IMG_VECTORSCOPE:
-                               if (!scopes->vector_ibuf)
-                                       scopes->vector_ibuf = 
sequencer_make_scope(scene, ibuf, make_vectorscope_view_from_ibuf);
-                               scope = scopes->vector_ibuf;
-                               break;
-                       case SEQ_DRAW_IMG_HISTOGRAM:
-                               if (!scopes->histogram_ibuf)
-                                       scopes->histogram_ibuf = 
sequencer_make_scope(scene, ibuf, make_histogram_view_from_ibuf);
-                               scope = scopes->histogram_ibuf;
-                               break;
-               }
-
-               /* future files may have new scopes we don't catch above */
-               if (scope) {
-                       scopes->reference_ibuf = ibuf;
-                       if (sseq->mainb == SEQ_DRAW_IMG_IMBUF) {
-                               /* scopes drawn in image preview use viewrect 
from orig ibuf - currently that's only zebra */
-                       }
-                       else {
-                               viewrect[0] = scope->x;
-                               viewrect[1] = scope->y;
-                       }
+               if (aspect >= image_aspect) {
+                       p

@@ Diff output truncated at 10240 characters. @@

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