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meta-background-actor: Rename shader snippets

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Add the word 'vignette' in order to give some context on what the
snippets do. This will be useful later when we land other snippets
for the gradient effect.

https://bugzilla.gnome.org/show_bug.cgi?id=786618
This commit is contained in:
Alessandro Bono 2017-08-20 13:14:19 +02:00
parent 0a8d8128b3
commit f381d7c3bf
1 changed files with 16 additions and 14 deletions
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30
src/compositor/meta-background-actor.c
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@ -100,19 +100,19 @@ typedef enum {
CHANGED_ALL = 0xFFFF
} ChangedFlags;
#define VERTEX_SHADER_DECLARATIONS \
#define VIGNETTE_VERTEX_SHADER_DECLARATIONS \
"uniform vec2 scale;\n" \
"uniform vec2 offset;\n" \
"varying vec2 position;\n" \
#define VERTEX_SHADER_CODE \
#define VIGNETTE_VERTEX_SHADER_CODE \
"position = cogl_tex_coord0_in.xy * scale + offset;\n" \
#define FRAGMENT_SHADER_DECLARATIONS \
#define VIGNETTE_FRAGMENT_SHADER_DECLARATIONS \
"uniform float vignette_sharpness;\n" \
"varying vec2 position;\n" \
#define FRAGMENT_SHADER_CODE \
#define VIGNETTE_FRAGMENT_SHADER_CODE \
"float t = 2.0 * length(position);\n" \
"t = min(t, 1.0);\n" \
"float pixel_brightness = 1.0 - t * vignette_sharpness;\n" \
@ -245,20 +245,22 @@ make_pipeline (PipelineFlags pipeline_flags)
if ((pipeline_flags & PIPELINE_VIGNETTE) != 0)
{
static CoglSnippet *vertex_snippet;
static CoglSnippet *fragment_snippet;
static CoglSnippet *vignette_vertex_snippet;
static CoglSnippet *vignette_fragment_snippet;
if (!vertex_snippet)
vertex_snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_VERTEX,
VERTEX_SHADER_DECLARATIONS, VERTEX_SHADER_CODE);
if (!vignette_vertex_snippet)
vignette_vertex_snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_VERTEX,
VIGNETTE_VERTEX_SHADER_DECLARATIONS,
VIGNETTE_VERTEX_SHADER_CODE);
cogl_pipeline_add_snippet (*templatep, vertex_snippet);
cogl_pipeline_add_snippet (*templatep, vignette_vertex_snippet);
if (!fragment_snippet)
fragment_snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
FRAGMENT_SHADER_DECLARATIONS, FRAGMENT_SHADER_CODE);
if (!vignette_fragment_snippet)
vignette_fragment_snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
VIGNETTE_FRAGMENT_SHADER_DECLARATIONS,
VIGNETTE_FRAGMENT_SHADER_CODE);
cogl_pipeline_add_snippet (*templatep, fragment_snippet);
cogl_pipeline_add_snippet (*templatep, vignette_fragment_snippet);
}
if ((pipeline_flags & PIPELINE_BLEND) == 0)