diff options
Diffstat (limited to 'gsk/gl/gskglrenderer.c')
| -rw-r--r-- | gsk/gl/gskglrenderer.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/gsk/gl/gskglrenderer.c b/gsk/gl/gskglrenderer.c index 28df34f348..4807dbfba1 100644 --- a/gsk/gl/gskglrenderer.c +++ b/gsk/gl/gskglrenderer.c @@ -3074,6 +3074,10 @@ static inline void apply_conic_gradient_op (const Program *program, const OpConicGradient *op) { + float angle; + float bias; + float scale; + OP_PRINT (" -> Conic gradient"); if (op->n_color_stops.send) glUniform1i (program->conic_gradient.num_color_stops_location, op->n_color_stops.value); @@ -3083,8 +3087,15 @@ apply_conic_gradient_op (const Program *program, op->n_color_stops.value * 5, (float *)op->color_stops.value); - glUniform1f (program->conic_gradient.rotation_location, op->rotation); - glUniform2f (program->conic_gradient.center_location, op->center[0], op->center[1]); + angle = 90.0f - op->rotation; + angle = M_PI * angle / 180.0f; + angle = fmodf (angle, 2.0f * M_PI); + if (angle < 0.0f) + angle += 2.0f * M_PI; + + scale = 0.5f * M_1_PI; + bias = angle * scale + 2.0f; + glUniform4f (program->conic_gradient.geometry_location, op->center[0], op->center[1], scale, bias); } static inline void @@ -3385,8 +3396,7 @@ gsk_gl_renderer_create_programs (GskGLRenderer *self, /* conic gradient */ INIT_PROGRAM_UNIFORM_LOCATION (conic_gradient, color_stops); INIT_PROGRAM_UNIFORM_LOCATION (conic_gradient, num_color_stops); - INIT_PROGRAM_UNIFORM_LOCATION (conic_gradient, center); - INIT_PROGRAM_UNIFORM_LOCATION (conic_gradient, rotation); + INIT_PROGRAM_UNIFORM_LOCATION (conic_gradient, geometry); /* blur */ INIT_PROGRAM_UNIFORM_LOCATION (blur, blur_radius); |