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94 lines
2.7 KiB
94 lines
2.7 KiB
#import "Common/ShaderLib/Lighting.glsllib"
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uniform mat4 g_WorldViewProjectionMatrix;
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uniform mat4 g_WorldViewMatrix;
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uniform mat3 g_NormalMatrix;
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uniform mat4 g_ViewMatrix;
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uniform vec4 g_LightColor;
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uniform vec4 g_LightPosition;
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uniform vec4 g_AmbientLightColor;
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uniform float m_Shininess;
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attribute vec3 inPosition;
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attribute vec3 inNormal;
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attribute vec2 inTexCoord;
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attribute vec4 inTangent;
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varying vec3 vNormal;
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varying vec2 texCoord;
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varying vec3 vPosition;
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varying vec3 vnPosition;
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varying vec3 vViewDir;
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varying vec3 vnViewDir;
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varying vec4 vLightDir;
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varying vec4 vnLightDir;
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varying vec3 lightVec;
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varying vec4 AmbientSum;
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varying vec4 DiffuseSum;
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varying vec4 SpecularSum;
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#ifdef TRI_PLANAR_MAPPING
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varying vec4 wVertex;
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varying vec3 wNormal;
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#endif
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void main(){
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vec4 pos = vec4(inPosition, 1.0);
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gl_Position = g_WorldViewProjectionMatrix * pos;
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#ifdef TERRAIN_GRID
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texCoord = inTexCoord * 2.0;
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#else
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texCoord = inTexCoord;
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#endif
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vec3 wvPosition = (g_WorldViewMatrix * pos).xyz;
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vec3 wvNormal = normalize(g_NormalMatrix * inNormal);
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vec3 viewDir = normalize(-wvPosition);
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vec4 wvLightPos = (g_ViewMatrix * vec4(g_LightPosition.xyz,clamp(g_LightColor.w,0.0,1.0)));
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wvLightPos.w = g_LightPosition.w;
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vec4 lightColor = g_LightColor;
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//--------------------------
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// specific to normal maps:
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//--------------------------
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#if defined(NORMALMAP) || defined(NORMALMAP_1) || defined(NORMALMAP_2) || defined(NORMALMAP_3) || defined(NORMALMAP_4) || defined(NORMALMAP_5) || defined(NORMALMAP_6) || defined(NORMALMAP_7) || defined(NORMALMAP_8) || defined(NORMALMAP_9) || defined(NORMALMAP_10) || defined(NORMALMAP_11)
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vec3 wvTangent = normalize(g_NormalMatrix * inTangent.xyz);
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vec3 wvBinormal = cross(wvNormal, wvTangent);
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mat3 tbnMat = mat3(wvTangent, wvBinormal * inTangent.w,wvNormal);
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vPosition = wvPosition * tbnMat;
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vViewDir = viewDir * tbnMat;
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lightComputeDir(wvPosition, lightColor.w, wvLightPos, vLightDir, lightVec);
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vLightDir.xyz = (vLightDir.xyz * tbnMat).xyz;
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#else
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//-------------------------
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// general to all lighting
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//-------------------------
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vNormal = wvNormal;
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vPosition = wvPosition;
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vViewDir = viewDir;
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lightComputeDir(wvPosition, lightColor.w, wvLightPos, vLightDir, lightVec);
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#endif
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AmbientSum = g_AmbientLightColor; // Default: ambient color is dark gray
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DiffuseSum = lightColor;
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SpecularSum = lightColor;
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#ifdef TRI_PLANAR_MAPPING
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wVertex = vec4(inPosition,0.0);
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wNormal = inNormal;
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#endif
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} |