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gskglrenderer: First class support of repeating-linear-gradient

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This commit is contained in:
Fabio Lagalla 2021-01-26 12:46:22 +01:00
parent b15902bf44
commit 976a05f6eb
5 changed files with 15 additions and 1 deletions
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6
gsk/gl/gskglrenderer.c
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@ -1452,6 +1452,7 @@ render_linear_gradient_node (GskGLRenderer *self,
ops_set_linear_gradient (builder,
n_color_stops,
stops,
gsk_render_node_get_node_type (node) == GSK_REPEATING_LINEAR_GRADIENT_NODE,
builder->dx + start->x,
builder->dy + start->y,
builder->dx + end->x,
@ -3044,6 +3045,7 @@ apply_linear_gradient_op (const Program *program,
glUniform4f (program->linear_gradient.points_location,
op->start_point[0], op->start_point[1],
op->end_point[0] - op->start_point[0], op->end_point[1] - op->start_point[1]);
glUniform1i (program->linear_gradient.repeat_location, op->repeat);
}
static inline void
@ -3385,6 +3387,7 @@ gsk_gl_renderer_create_programs (GskGLRenderer *self,
/* linear gradient */
INIT_PROGRAM_UNIFORM_LOCATION (linear_gradient, color_stops);
INIT_PROGRAM_UNIFORM_LOCATION (linear_gradient, num_color_stops);
INIT_PROGRAM_UNIFORM_LOCATION (linear_gradient, repeat);
INIT_PROGRAM_UNIFORM_LOCATION (linear_gradient, points);
/* radial gradient */
@ -3742,6 +3745,8 @@ gsk_gl_renderer_add_render_ops (GskGLRenderer *self,
break;
case GSK_LINEAR_GRADIENT_NODE:
/* Intentional fall-through */
case GSK_REPEATING_LINEAR_GRADIENT_NODE:
render_linear_gradient_node (self, node, builder);
break;
@ -3812,7 +3817,6 @@ gsk_gl_renderer_add_render_ops (GskGLRenderer *self,
render_gl_shader_node (self, node, builder);
break;
case GSK_REPEATING_LINEAR_GRADIENT_NODE:
case GSK_REPEATING_RADIAL_GRADIENT_NODE:
case GSK_CAIRO_NODE:
default:

2
gsk/gl/gskglrenderops.c
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@ -859,6 +859,7 @@ void
ops_set_linear_gradient (RenderOpBuilder *self,
guint n_color_stops,
const GskColorStop *color_stops,
bool repeat,
float start_x,
float start_y,
float end_x,
@ -912,6 +913,7 @@ ops_set_linear_gradient (RenderOpBuilder *self,
sizeof (GskColorStop) * real_n_color_stops);
}
op->repeat = repeat;
op->start_point[0] = start_x;
op->start_point[1] = start_y;
op->end_point[0] = end_x;

2
gsk/gl/gskglrenderopsprivate.h
View File

@ -119,6 +119,7 @@ struct _Program
int num_color_stops_location;
int color_stops_location;
int points_location;
int repeat_location;
} linear_gradient;
struct {
int num_color_stops_location;
@ -315,6 +316,7 @@ void ops_set_unblurred_outset_shadow (RenderOpBuilder *se
void ops_set_linear_gradient (RenderOpBuilder *self,
guint n_color_stops,
const GskColorStop *color_stops,
bool repeat,
float start_x,
float start_y,
float end_x,

1
gsk/gl/opbuffer.h
View File

@ -146,6 +146,7 @@ typedef struct
IntUniformValue n_color_stops;
float start_point[2];
float end_point[2];
bool repeat;
} OpLinearGradient;
typedef struct

5
gsk/resources/glsl/linear_gradient.glsl
View File

@ -46,6 +46,7 @@ uniform highp int u_num_color_stops; // Why? Because it works like this.
#endif
uniform float u_color_stops[6 * 5];
uniform bool u_repeat;
_NOPERSPECTIVE_ _IN_ vec4 info;
@ -65,6 +66,10 @@ vec4 get_color(int index) {
void main() {
float offset = dot(info.xy, info.zw);
if (u_repeat) {
offset = fract(offset);
}
if (offset < get_offset(0)) {
gskSetOutputColor(gsk_scaled_premultiply(get_color(0), u_alpha));
return;