diff options
Diffstat (limited to 'source/blender/gpu/shaders/gpu_shader_2D_widget_base_vert.glsl')
| -rw-r--r-- | source/blender/gpu/shaders/gpu_shader_2D_widget_base_vert.glsl | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_2D_widget_base_vert.glsl b/source/blender/gpu/shaders/gpu_shader_2D_widget_base_vert.glsl new file mode 100644 index 00000000000..9b63952db5c --- /dev/null +++ b/source/blender/gpu/shaders/gpu_shader_2D_widget_base_vert.glsl @@ -0,0 +1,208 @@ +#define BIT_RANGE(x) uint((1 << x) - 1) + +/* 2 bits for corner */ +/* Attention! Not the same order as in UI_interface.h! + * Ordered by drawing order. */ +#define BOTTOM_LEFT 0u +#define BOTTOM_RIGHT 1u +#define TOP_RIGHT 2u +#define TOP_LEFT 3u +#define CNR_FLAG_RANGE BIT_RANGE(2) + +/* 4bits for corner id */ +#define CORNER_VEC_OFS 2u +#define CORNER_VEC_RANGE BIT_RANGE(4) +const vec2 cornervec[36] = vec2[36]( + vec2(0.0, 1.0), vec2(0.02, 0.805), vec2(0.067, 0.617), vec2(0.169, 0.45), vec2(0.293, 0.293), vec2(0.45, 0.169), vec2(0.617, 0.076), vec2(0.805, 0.02), vec2(1.0, 0.0), + vec2(-1.0, 0.0), vec2(-0.805, 0.02), vec2(-0.617, 0.067), vec2(-0.45, 0.169), vec2(-0.293, 0.293), vec2(-0.169, 0.45), vec2(-0.076, 0.617), vec2(-0.02, 0.805), vec2(0.0, 1.0), + vec2(0.0, -1.0), vec2(-0.02, -0.805), vec2(-0.067, -0.617), vec2(-0.169, -0.45), vec2(-0.293, -0.293), vec2(-0.45, -0.169), vec2(-0.617, -0.076), vec2(-0.805, -0.02), vec2(-1.0, 0.0), + vec2(1.0, 0.0), vec2(0.805, -0.02), vec2(0.617, -0.067), vec2(0.45, -0.169), vec2(0.293, -0.293), vec2(0.169, -0.45), vec2(0.076, -0.617), vec2(0.02, -0.805), vec2(0.0, -1.0) +); + +/* 4bits for jitter id */ +#define JIT_OFS 6u +#define JIT_RANGE BIT_RANGE(4) +const vec2 jit[9] = vec2[9]( + vec2( 0.468813, -0.481430), vec2(-0.155755, -0.352820), + vec2( 0.219306, -0.238501), vec2(-0.393286, -0.110949), + vec2(-0.024699, 0.013908), vec2( 0.343805, 0.147431), + vec2(-0.272855, 0.269918), vec2( 0.095909, 0.388710), + vec2( 0.0, 0.0) +); + +/* 2bits for other flags */ +#define INNER_FLAG uint(1 << 10) /* is inner vert */ +#define EMBOSS_FLAG uint(1 << 11) /* is emboss vert */ + +/* 2bits for color */ +#define COLOR_OFS 12u +#define COLOR_RANGE BIT_RANGE(2) +#define COLOR_INNER 0u +#define COLOR_EDGE 1u +#define COLOR_EMBOSS 2u + +/* 2bits for trias type */ +#define TRIA_FLAG uint(1 << 14) /* is tria vert */ +#define TRIA_FIRST INNER_FLAG /* is first tria (reuse INNER_FLAG) */ + +/* We can reuse the CORNER_* bits for tria */ +#define TRIA_VEC_RANGE BIT_RANGE(6) +const vec2 triavec[43] = vec2[43]( + + /* ROUNDBOX_TRIA_ARROWS */ + vec2(-0.170000, 0.400000), vec2(-0.050000, 0.520000), vec2( 0.250000, 0.000000), vec2( 0.470000, -0.000000), vec2(-0.170000, -0.400000), vec2(-0.050000, -0.520000), + vec2( 0.170000, 0.400000), vec2( 0.050000, 0.520000), vec2(-0.250000, 0.000000), vec2(-0.470000, -0.000000), vec2( 0.170000, -0.400000), vec2( 0.050000, -0.520000), + + /* ROUNDBOX_TRIA_SCROLL - circle tria (triangle strip) */ + vec2(0.000000, 1.000000), + vec2(0.382684, 0.923879), vec2(-0.382683, 0.923880), + vec2(0.707107, 0.707107), vec2(-0.707107, 0.707107), + vec2(0.923879, 0.382684), vec2(-0.923879, 0.382684), + vec2(1.000000, 0.000000), vec2(-1.000000, 0.000000), + vec2(0.923879, -0.382684), vec2(-0.923879, -0.382684), + vec2(0.707107, -0.707107), vec2(-0.707107, -0.707107), + vec2(0.382684, -0.923879), vec2(-0.382683, -0.923880), + vec2(0.000000, -1.000000), + + /* ROUNDBOX_TRIA_MENU - menu arrows */ + vec2(-0.51, 0.08), vec2(-0.41, 0.20), vec2(-0.05, -0.39), + vec2(-0.05, -0.18), vec2(0.41, 0.08), vec2(0.3, 0.20), + + + /* ROUNDBOX_TRIA_CHECK - check mark */ + vec2(-0.67000, 0.020000), vec2(-0.500000, 0.190000), vec2(-0.130000, -0.520000), + vec2(-0.130000, -0.170000), vec2(0.720000, 0.430000), vec2(0.530000, 0.590000), + + /* ROUNDBOX_TRIA_HOLD_ACTION_ARROW - hold action arrows */ +#define OY (-0.2 / 2) +#define SC (0.35 * 2) +// vec2(-0.5 + SC, 1.0 + OY), vec2( 0.5, 1.0 + OY), vec2( 0.5, 0.0 + OY + SC), + vec2( 0.5 - SC, 1.0 + OY), vec2(-0.5, 1.0 + OY), vec2(-0.5, 0.0 + OY + SC) +#undef OY +#undef SC +); + +uniform mat4 ModelViewProjectionMatrix; + +#define MAX_PARAM 11 +#ifdef USE_INSTANCE +#define MAX_INSTANCE 6 +uniform vec4 parameters[MAX_PARAM * MAX_INSTANCE]; +#else +uniform vec4 parameters[MAX_PARAM]; +#endif + +/* gl_InstanceID is 0 if not drawing instances. */ +#define recti parameters[gl_InstanceID * MAX_PARAM + 0] +#define rect parameters[gl_InstanceID * MAX_PARAM + 1] +#define radsi parameters[gl_InstanceID * MAX_PARAM + 2].x +#define rads parameters[gl_InstanceID * MAX_PARAM + 2].y +#define faci parameters[gl_InstanceID * MAX_PARAM + 2].zw +#define roundCorners parameters[gl_InstanceID * MAX_PARAM + 3] +#define colorInner1 parameters[gl_InstanceID * MAX_PARAM + 4] +#define colorInner2 parameters[gl_InstanceID * MAX_PARAM + 5] +#define colorEdge parameters[gl_InstanceID * MAX_PARAM + 6] +#define colorEmboss parameters[gl_InstanceID * MAX_PARAM + 7] +#define colorTria parameters[gl_InstanceID * MAX_PARAM + 8] +#define tria1Center parameters[gl_InstanceID * MAX_PARAM + 9].xy +#define tria2Center parameters[gl_InstanceID * MAX_PARAM + 9].zw +#define tria1Size parameters[gl_InstanceID * MAX_PARAM + 10].x +#define tria2Size parameters[gl_InstanceID * MAX_PARAM + 10].y +#define shadeDir parameters[gl_InstanceID * MAX_PARAM + 10].z +#define alphaDiscard parameters[gl_InstanceID * MAX_PARAM + 10].w + +/* We encode alpha check and discard factor together. */ +#define doAlphaCheck (alphaDiscard < 0.0) +#define discardFactor abs(alphaDiscard) + +in uint vflag; + +noperspective out vec4 finalColor; +noperspective out float butCo; +flat out float discardFac; + +vec2 do_widget(void) +{ + uint cflag = vflag & CNR_FLAG_RANGE; + uint vofs = (vflag >> CORNER_VEC_OFS) & CORNER_VEC_RANGE; + + vec2 v = cornervec[cflag * 9u + vofs]; + + bool is_inner = (vflag & INNER_FLAG) != 0u; + + /* Scale by corner radius */ + v *= roundCorners[cflag] * ((is_inner) ? radsi : rads); + + /* Position to corner */ + vec4 rct = (is_inner) ? recti : rect; + if (cflag == BOTTOM_LEFT) + v += rct.xz; + else if (cflag == BOTTOM_RIGHT) + v += rct.yz; + else if (cflag == TOP_RIGHT) + v += rct.yw; + else /* (cflag == TOP_LEFT) */ + v += rct.xw; + + vec2 uv = faci * (v - recti.xz); + + /* compute uv and color gradient */ + uint color_id = (vflag >> COLOR_OFS) & COLOR_RANGE; + if (color_id == COLOR_INNER) { + float fac = clamp((shadeDir > 0.0) ? uv.y : uv.x, 0.0, 1.0); + + if (doAlphaCheck) { + finalColor = colorInner1; + butCo = uv.x; + } + else { + finalColor = mix(colorInner2, colorInner1, fac); + butCo = -abs(uv.x); + } + } + else if (color_id == COLOR_EDGE) { + finalColor = colorEdge; + butCo = -abs(uv.x); + } + else /* (color_id == COLOR_EMBOSS) */ { + finalColor = colorEmboss; + butCo = -abs(uv.x); + } + + bool is_emboss = (vflag & EMBOSS_FLAG) != 0u; + v.y -= (is_emboss) ? 1.0f : 0.0; + + return v; +} + +vec2 do_tria() +{ + uint vofs = vflag & TRIA_VEC_RANGE; + + vec2 v = triavec[vofs]; + + finalColor = colorTria; + butCo = -1.0; + + bool is_tria_first = (vflag & TRIA_FIRST) != 0u; + + if (is_tria_first) + v = v * tria1Size + tria1Center; + else + v = v * tria2Size + tria2Center; + + return v; +} + +void main() +{ + discardFac = discardFactor; + bool is_tria = (vflag & TRIA_FLAG) != 0u; + + vec2 v = (is_tria) ? do_tria() : do_widget(); + + /* Antialiasing offset */ + v += jit[(vflag >> JIT_OFS) & JIT_RANGE]; + + gl_Position = ModelViewProjectionMatrix * vec4(v, 0.0, 1.0); +} |