diff options
| author | Markus Wick <markus@selfnet.de> | 2014-06-06 21:20:57 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2014-06-09 13:52:58 -0400 |
| commit | 883ae5886d1db26ba1ae270aa07219896f33c70f (patch) | |
| tree | 45ffad38c3522a80382c343bab87d1a745a20559 | |
| parent | ecf6ce02d673780583efc338b6501c15fae18169 (diff) | |
glamor: Use glsl "fract/mod" instead of "while" in gradient shaders.
This fixes gtkperf. It seemed to hang forever.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | src/glamor_gradient.c | 48 |
1 files changed, 4 insertions, 44 deletions
diff --git a/src/glamor_gradient.c b/src/glamor_gradient.c index 06515b8..4802745 100644 --- a/src/glamor_gradient.c +++ b/src/glamor_gradient.c @@ -257,7 +257,6 @@ _glamor_create_radial_gradient_program(ScreenPtr screen, int stops_count, int dy "{\n"\ " float t = 0.0;\n"\ " float sqrt_value;\n"\ - " int revserse = 0;\n"\ " t_invalid = 0;\n"\ " \n"\ " vec3 tmp = vec3(source_texture.x, source_texture.y, 1.0);\n"\ @@ -305,30 +304,11 @@ _glamor_create_radial_gradient_program(ScreenPtr screen, int stops_count, int dy " }\n"\ " \n"\ " if(repeat_type == %d){\n" /* repeat normal*/\ - " while(t > 1.0) \n"\ - " t = t - 1.0; \n"\ - " while(t < 0.0) \n"\ - " t = t + 1.0; \n"\ + " t = fract(t);\n"\ " }\n"\ " \n"\ " if(repeat_type == %d) {\n" /* repeat reflect*/\ - " while(t > 1.0) {\n"\ - " t = t - 1.0; \n"\ - " if(revserse == 0)\n"\ - " revserse = 1;\n"\ - " else\n"\ - " revserse = 0;\n"\ - " }\n"\ - " while(t < 0.0) {\n"\ - " t = t + 1.0; \n"\ - " if(revserse == 0)\n"\ - " revserse = 1;\n"\ - " else\n"\ - " revserse = 0;\n"\ - " }\n"\ - " if(revserse == 1) {\n"\ - " t = 1.0 - t; \n"\ - " }\n"\ + " t = abs(fract(t * 0.5 + 0.5) * 2.0 - 1.0);\n"\ " }\n"\ " \n"\ " return t;\n"\ @@ -500,7 +480,6 @@ _glamor_create_linear_gradient_program(ScreenPtr screen, int stops_count, int dy " vec4 stop_color_before;\n"\ " vec4 stop_color_after;\n"\ " float new_alpha; \n"\ - " int revserse = 0;\n"\ " vec4 gradient_color;\n"\ " float percentage; \n"\ " vec3 source_texture_trans = transform_mat * tmp;\n"\ @@ -520,30 +499,11 @@ _glamor_create_linear_gradient_program(ScreenPtr screen, int stops_count, int dy " distance = distance - _p1_distance; \n"\ " \n"\ " if(repeat_type == %d){\n" /* repeat normal*/\ - " while(distance > _pt_distance) \n"\ - " distance = distance - (_pt_distance); \n"\ - " while(distance < 0.0) \n"\ - " distance = distance + (_pt_distance); \n"\ + " distance = mod(distance, _pt_distance);\n"\ " }\n"\ " \n"\ " if(repeat_type == %d) {\n" /* repeat reflect*/\ - " while(distance > _pt_distance) {\n"\ - " distance = distance - (_pt_distance); \n"\ - " if(revserse == 0)\n"\ - " revserse = 1;\n"\ - " else\n"\ - " revserse = 0;\n"\ - " }\n"\ - " while(distance < 0.0) {\n"\ - " distance = distance + (_pt_distance); \n"\ - " if(revserse == 0)\n"\ - " revserse = 1;\n"\ - " else\n"\ - " revserse = 0;\n"\ - " }\n"\ - " if(revserse == 1) {\n"\ - " distance = (_pt_distance) - distance; \n"\ - " }\n"\ + " distance = abs(mod(distance + _pt_distance, 2.0 * _pt_distance) - _pt_distance);\n"\ " }\n"\ " \n"\ " len_percentage = distance/(_pt_distance);\n"\ |