[gtk/matthiasc/color-profiles: 4/32] ngl: Upload textures in linear sRGB

[Matthias Clasen <matthiasc src gnome org>]

commit 93e275c7054e4ec712b2d6acdfab8800947ea977
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Sep 29 17:17:57 2021 -0400

    ngl: Upload textures in linear sRGB
    
    We want to do compositing in a linear colorspace,
    so convert textures to linear sRGB before uploading.
    
    Currently, this causes images to come out dark, since
    we don't have a way to tell the compositor that our
    framebuffer is linear, so it assumes a gamma that we
    don't provide.

 gsk/ngl/gsknglcommandqueue.c | 3 ++-
 gsk/ngl/gsknglglyphlibrary.c | 5 +++--
 gsk/ngl/gskngliconlibrary.c  | 3 ++-
 gsk/ngl/gsknglrenderjob.c    | 7 ++++++-
 4 files changed, 13 insertions(+), 5 deletions(-)
---
diff --git a/gsk/ngl/gsknglcommandqueue.c b/gsk/ngl/gsknglcommandqueue.c
index 877bae383b..e06a5f76f5 100644
--- a/gsk/ngl/gsknglcommandqueue.c
+++ b/gsk/ngl/gsknglcommandqueue.c
@@ -28,6 +28,7 @@
 #include <gdk/gdkglcontextprivate.h>
 #include <gdk/gdkmemoryformatprivate.h>
 #include <gdk/gdkmemorytextureprivate.h>
+#include <gdk/gdkcolorprofileprivate.h>
 #include <gdk/gdkprofilerprivate.h>
 #include <gsk/gskdebugprivate.h>
 #include <gsk/gskroundedrectprivate.h>
@@ -1361,7 +1362,7 @@ gsk_ngl_command_queue_do_upload_texture (GdkGLContext    *context,
 
   memory_texture = gdk_memory_texture_convert (memory_texture,
                                                data_format,
-                                               gdk_color_profile_get_srgb (),
+                                               gdk_color_profile_get_srgb_linear (),
                                                &(GdkRectangle) { x, y, width, height });
 
   bpp = gdk_memory_format_bytes_per_pixel (data_format);
diff --git a/gsk/ngl/gsknglglyphlibrary.c b/gsk/ngl/gsknglglyphlibrary.c
index df477b05f1..1e67bd098d 100644
--- a/gsk/ngl/gsknglglyphlibrary.c
+++ b/gsk/ngl/gsknglglyphlibrary.c
@@ -23,6 +23,7 @@
 #include <gdk/gdkglcontextprivate.h>
 #include <gdk/gdkmemoryformatprivate.h>
 #include <gdk/gdkprofilerprivate.h>
+#include <gdk/gdkcolorprofileprivate.h>
 
 #include "gsknglcommandqueueprivate.h"
 #include "gskngldriverprivate.h"
@@ -238,11 +239,11 @@ gsk_ngl_glyph_library_upload_glyph (GskNglGlyphLibrary     *self,
       gdk_memory_convert (pixel_data,
                           width * 4,
                           GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
-                          gdk_color_profile_get_srgb (),
+                          gdk_color_profile_get_srgb_linear (),
                           cairo_image_surface_get_data (surface),
                           width * 4,
                           GDK_MEMORY_DEFAULT,
-                          gdk_color_profile_get_srgb (),
+                          gdk_color_profile_get_srgb_linear (),
                           width, height);
       gl_format = GL_RGBA;
       gl_type = GL_UNSIGNED_BYTE;
diff --git a/gsk/ngl/gskngliconlibrary.c b/gsk/ngl/gskngliconlibrary.c
index afe13e1db6..3cdf84927c 100644
--- a/gsk/ngl/gskngliconlibrary.c
+++ b/gsk/ngl/gskngliconlibrary.c
@@ -25,6 +25,7 @@
 #include <gdk/gdkmemorytextureprivate.h>
 #include <gdk/gdkprofilerprivate.h>
 #include <gdk/gdktextureprivate.h>
+#include <gdk/gdkcolorprofileprivate.h>
 
 #include "gsknglcommandqueueprivate.h"
 #include "gskngldriverprivate.h"
@@ -104,7 +105,7 @@ gsk_ngl_texture_prepare_upload (GdkGLContext *context,
 
   return gdk_memory_texture_convert (memtex,
                                      format,
-                                     gdk_color_profile_get_srgb (),
+                                     gdk_color_profile_get_srgb_linear (),
                                      NULL);
 }
 
diff --git a/gsk/ngl/gsknglrenderjob.c b/gsk/ngl/gsknglrenderjob.c
index baf87f6461..7cfe98fa01 100644
--- a/gsk/ngl/gsknglrenderjob.c
+++ b/gsk/ngl/gsknglrenderjob.c
@@ -29,6 +29,7 @@
 #include <gsk/gskrendernodeprivate.h>
 #include <gsk/gskglshaderprivate.h>
 #include <gdk/gdktextureprivate.h>
+#include <gdk/gdkcolorprofileprivate.h>
 #include <gsk/gsktransformprivate.h>
 #include <gsk/gskroundedrectprivate.h>
 #include <math.h>
@@ -1162,6 +1163,9 @@ gsk_ngl_render_job_visit_as_fallback (GskNglRenderJob     *job,
                                                    surface_width,
                                                    surface_height);
 
+    gdk_cairo_surface_set_color_profile (rendered_surface,
+                                         gdk_color_profile_get_srgb_linear ());
+
     cairo_surface_set_device_scale (rendered_surface, scale_x, scale_y);
     cr = cairo_create (rendered_surface);
 
@@ -3533,7 +3537,8 @@ gsk_ngl_render_job_visit_repeat_node (GskNglRenderJob     *job,
 
   /* If the size of the repeat node is smaller than the size of the
    * child node, we don't repeat at all and can just draw that part
-   * of the child texture... */
+   * of the child texture...
+   */
   if (rect_contains_rect (child_bounds, &node->bounds))
     {
       gsk_ngl_render_job_visit_clipped_child (job, child, &node->bounds);