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author | Lukas Tönne <lukas.toenne@gmail.com> | 2018-08-12 14:52:49 +0300 |
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committer | Lukas Tönne <lukas.toenne@gmail.com> | 2018-08-12 14:52:49 +0300 |
commit | dc2d841b7c50565302af2986d62ddbd29c332acd (patch) | |
tree | 324f234e56fde77fb80dfdef0c7c21f01968f71b /source/blender/gpu/shaders/gpu_shader_gpencil_fill_frag.glsl | |
parent | 27b28e437d974ebbafa234205941c07aa0ab546c (diff) | |
parent | 4b6fa4d897a0bb3252b16383492b526d2cef3920 (diff) |
Merge branch 'blender2.8' into hair_guideshair_guides
Diffstat (limited to 'source/blender/gpu/shaders/gpu_shader_gpencil_fill_frag.glsl')
-rw-r--r-- | source/blender/gpu/shaders/gpu_shader_gpencil_fill_frag.glsl | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_gpencil_fill_frag.glsl b/source/blender/gpu/shaders/gpu_shader_gpencil_fill_frag.glsl new file mode 100644 index 00000000000..328fbbe26a1 --- /dev/null +++ b/source/blender/gpu/shaders/gpu_shader_gpencil_fill_frag.glsl @@ -0,0 +1,166 @@ +uniform vec4 color; +uniform vec4 color2; +uniform int fill_type; +uniform float mix_factor; + +uniform float g_angle; +uniform float g_radius; +uniform float g_boxsize; +uniform vec2 g_scale; +uniform vec2 g_shift; + +uniform float t_angle; +uniform vec2 t_scale; +uniform vec2 t_offset; +uniform int t_mix; +uniform int t_flip; +uniform float t_opacity; + +uniform sampler2D myTexture; + +/* keep this list synchronized with list in DNA_brush_types.h */ +#define SOLID 0 +#define GRADIENT 1 +#define RADIAL 2 +#define CHESS 3 +#define TEXTURE 4 + +in vec2 texCoord_interp; +out vec4 fragColor; +#define texture2D texture + +void set_color(in vec4 color, in vec4 color2, in vec4 tcolor, in float mixv, in float factor, + in int tmix, in int flip, out vec4 ocolor) +{ + /* full color A */ + if (mixv == 1.0) { + if (tmix == 1) { + if (flip == 0) { + ocolor = color; + } + else { + ocolor = tcolor; + } + } + else { + if (flip == 0) { + ocolor = color; + } + else { + ocolor = color2; + } + } + } + /* full color B */ + else if (mixv == 0.0) { + if (tmix == 1) { + if (flip == 0) { + ocolor = tcolor; + } + else { + ocolor = color; + } + } + else { + if (flip == 0) { + ocolor = color2; + } + else { + ocolor = color; + } + } + } + /* mix of colors */ + else { + if (tmix == 1) { + if (flip == 0) { + ocolor = mix(color, tcolor, factor); + } + else { + ocolor = mix(tcolor, color, factor); + } + } + else { + if (flip == 0) { + ocolor = mix(color, color2, factor); + } + else { + ocolor = mix(color2, color, factor); + } + } + } +} + +void main() +{ + vec2 t_center = vec2(0.5, 0.5); + mat2 matrot_tex = mat2(cos(t_angle), -sin(t_angle), sin(t_angle), cos(t_angle)); + vec2 rot_tex = (matrot_tex * (texCoord_interp - t_center)) + t_center + t_offset; + vec4 tmp_color = texture2D(myTexture, rot_tex * t_scale); + vec4 text_color = vec4(tmp_color[0], tmp_color[1], tmp_color[2], tmp_color[3] * t_opacity); + vec4 chesscolor; + + /* solid fill */ + if (fill_type == SOLID) { + if (t_mix == 1) { + fragColor = mix(color, text_color, mix_factor); + } + else { + fragColor = color; + } + } + else { + vec2 center = vec2(0.5, 0.5) + g_shift; + mat2 matrot = mat2(cos(g_angle), -sin(g_angle), sin(g_angle), cos(g_angle)); + vec2 rot = (((matrot * (texCoord_interp - center)) + center) * g_scale) + g_shift; + /* gradient */ + if (fill_type == GRADIENT) { + set_color(color, color2, text_color, mix_factor, rot.x - mix_factor + 0.5, t_mix, t_flip, fragColor); + } + /* radial gradient */ + if (fill_type == RADIAL) { + float in_rad = g_radius * mix_factor; + float ex_rad = g_radius - in_rad; + float intensity = 0; + float distance = length((center - texCoord_interp) * g_scale); + if (distance > g_radius) { + discard; + } + if (distance > in_rad) { + intensity = clamp(((distance - in_rad) / ex_rad), 0.0, 1.0); + } + set_color(color, color2, text_color, mix_factor, intensity, t_mix, t_flip, fragColor); + } + /* chessboard */ + if (fill_type == CHESS) { + vec2 pos = rot / g_boxsize; + if ((fract(pos.x) < 0.5 && fract(pos.y) < 0.5) || (fract(pos.x) > 0.5 && fract(pos.y) > 0.5)) { + if (t_flip == 0) { + chesscolor = color; + } + else { + chesscolor = color2; + } + } + else { + if (t_flip == 0) { + chesscolor = color2; + } + else { + chesscolor = color; + } + } + /* mix with texture */ + if (t_mix == 1) { + fragColor = mix(chesscolor, text_color, mix_factor); + } + else { + fragColor = chesscolor; + } + } + /* texture */ + if (fill_type == TEXTURE) { + fragColor = text_color; + } + } +} |