sam
共有 1 個文件被更改，包括 18 次插入 和 18 次删除
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+18 -18test/tutorial/tut03.cpp
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- 18
test/tutorial/tut03.cpp
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| @@ -393,8 +393,8 @@ public: | |||||
| "" | "" | ||||
| "float mylen(vec2 p) {" | "float mylen(vec2 p) {" | ||||
| //" return abs(p.x) + abs(p.y);" | //" return abs(p.x) + abs(p.y);" | ||||
| //" return p.x * p.x + p.y * p.y;" | |||||
| " return length(p);" | |||||
| " return 0.001 + p.x * p.x + p.y * p.y;" | |||||
| //" return 0.001 + length(p);" | |||||
| "}" | "}" | ||||
| "" | "" | ||||
| /* Get the coordinate of the nearest point in slice 0 in xy, | /* Get the coordinate of the nearest point in slice 0 in xy, | ||||
| @@ -407,10 +407,11 @@ public: | |||||
| " p += vec2(in_ZoomSettings[0][0], -in_ZoomSettings[0][1]);" | " p += vec2(in_ZoomSettings[0][0], -in_ZoomSettings[0][1]);" | ||||
| " p += vec2(0.5, 0.5);" | " p += vec2(0.5, 0.5);" | ||||
| " vec2 q = p + 0.5 * in_TexelSize.xy;" | " vec2 q = p + 0.5 * in_TexelSize.xy;" | ||||
| " q -= mod(q, 2.0 * in_TexelSize.xy);" | |||||
| " q += 0.5 * in_TexelSize.xy;" | |||||
| " q = in_TexelSize.xy" | |||||
| " * (1.0 + 2.0 * floor(q * 0.5 * in_TexelSize.zw));" | |||||
| " vec2 r = q - 0.5 * in_TexelSize.xy;" | |||||
| " float l = (abs(q.x - 0.5) < 0.5 && abs(q.y - 0.5) < 0.5)" | " float l = (abs(q.x - 0.5) < 0.5 && abs(q.y - 0.5) < 0.5)" | ||||
| " ? 1.0 / mylen(q - p) : 0.0;" | |||||
| " ? 1.0 / mylen(r - p) : 0.0;" | |||||
| " return vec3(q * vec2(1.0, 0.25), l);" | " return vec3(q * vec2(1.0, 0.25), l);" | ||||
| "}" | "}" | ||||
| "" | "" | ||||
| @@ -420,10 +421,11 @@ public: | |||||
| " p += vec2(in_ZoomSettings[1][0], -in_ZoomSettings[1][1]);" | " p += vec2(in_ZoomSettings[1][0], -in_ZoomSettings[1][1]);" | ||||
| " p += vec2(0.5, 0.5);" | " p += vec2(0.5, 0.5);" | ||||
| " vec2 q = p + -0.5 * in_TexelSize.xy;" | " vec2 q = p + -0.5 * in_TexelSize.xy;" | ||||
| " q -= mod(q, 2.0 * in_TexelSize.xy);" | |||||
| " q += 1.5 * in_TexelSize.xy;" | |||||
| " q = in_TexelSize.xy" | |||||
| " * (1.0 + 2.0 * floor(q * 0.5 * in_TexelSize.zw));" | |||||
| " vec2 r = q - -0.5 * in_TexelSize.xy;" | |||||
| " float l = (abs(q.x - 0.5) < 0.5 && abs(q.y - 0.5) < 0.5)" | " float l = (abs(q.x - 0.5) < 0.5 && abs(q.y - 0.5) < 0.5)" | ||||
| " ? 1.0 / mylen(q - p) : 0.0;" | |||||
| " ? 1.0 / mylen(r - p) : 0.0;" | |||||
| " return vec3(q * vec2(1.0, 0.25) + vec2(0.0, 0.25), l);" | " return vec3(q * vec2(1.0, 0.25) + vec2(0.0, 0.25), l);" | ||||
| "}" | "}" | ||||
| "" | "" | ||||
| @@ -433,10 +435,11 @@ public: | |||||
| " p += vec2(in_ZoomSettings[2][0], -in_ZoomSettings[2][1]);" | " p += vec2(in_ZoomSettings[2][0], -in_ZoomSettings[2][1]);" | ||||
| " p += vec2(0.5, 0.5);" | " p += vec2(0.5, 0.5);" | ||||
| " vec2 q = p + vec2(0.5, -0.5) * in_TexelSize.xy;" | " vec2 q = p + vec2(0.5, -0.5) * in_TexelSize.xy;" | ||||
| " q -= mod(q, 2.0 * in_TexelSize.xy);" | |||||
| " q += vec2(0.5, 1.5) * in_TexelSize.xy;" | |||||
| " q = in_TexelSize.xy" | |||||
| " * (1.0 + 2.0 * floor(q * 0.5 * in_TexelSize.zw));" | |||||
| " vec2 r = q - vec2(0.5, -0.5) * in_TexelSize.xy;" | |||||
| " float l = (abs(q.x - 0.5) < 0.5 && abs(q.y - 0.5) < 0.5)" | " float l = (abs(q.x - 0.5) < 0.5 && abs(q.y - 0.5) < 0.5)" | ||||
| " ? 1.0 / mylen(q - p) : 0.0;" | |||||
| " ? 1.0 / mylen(r - p) : 0.0;" | |||||
| " return vec3(q * vec2(1.0, 0.25) + vec2(0.0, 0.50), l);" | " return vec3(q * vec2(1.0, 0.25) + vec2(0.0, 0.50), l);" | ||||
| "}" | "}" | ||||
| "" | "" | ||||
| @@ -446,10 +449,11 @@ public: | |||||
| " p += vec2(in_ZoomSettings[3][0], -in_ZoomSettings[3][1]);" | " p += vec2(in_ZoomSettings[3][0], -in_ZoomSettings[3][1]);" | ||||
| " p += vec2(0.5, 0.5);" | " p += vec2(0.5, 0.5);" | ||||
| " vec2 q = p + vec2(-0.5, 0.5) * in_TexelSize.xy;" | " vec2 q = p + vec2(-0.5, 0.5) * in_TexelSize.xy;" | ||||
| " q -= mod(q, 2.0 * in_TexelSize.xy);" | |||||
| " q += vec2(1.5, 0.5) * in_TexelSize.xy;" | |||||
| " q = in_TexelSize.xy" | |||||
| " * (1.0 + 2.0 * floor(q * 0.5 * in_TexelSize.zw));" | |||||
| " vec2 r = q - vec2(-0.5, 0.5) * in_TexelSize.xy;" | |||||
| " float l = (abs(q.x - 0.5) < 0.5 && abs(q.y - 0.5) < 0.5)" | " float l = (abs(q.x - 0.5) < 0.5 && abs(q.y - 0.5) < 0.5)" | ||||
| " ? 1.0 / mylen(q - p) : 0.0;" | |||||
| " ? 1.0 / mylen(r - p) : 0.0;" | |||||
| " return vec3(q * vec2(1.0, 0.25) + vec2(0.0, 0.75), l);" | " return vec3(q * vec2(1.0, 0.25) + vec2(0.0, 0.75), l);" | ||||
| "}" | "}" | ||||
| "" | "" | ||||
| @@ -459,10 +463,6 @@ public: | |||||
| #else | #else | ||||
| " vec2 coord = gl_TexCoord[0].xy;" | " vec2 coord = gl_TexCoord[0].xy;" | ||||
| #endif | #endif | ||||
| /* Slightly shift our pixel so that it does not lie at | |||||
| * an exact texel boundary. This would lead to visual | |||||
| * artifacts. */ | |||||
| " coord -= 0.1 * in_TexelSize.xy;" | |||||
| /* Get a pixel from each slice */ | /* Get a pixel from each slice */ | ||||
| " vec3 k0 = nearest0(coord);" | " vec3 k0 = nearest0(coord);" | ||||
| " vec3 k1 = nearest1(coord);" | " vec3 k1 = nearest1(coord);" | ||||