forked from 0ad/0ad
historic_bruno
b1c4e29ac8
NOTE: requires update-workspaces and may require correction of some modded actors/scenarios This was SVN commit r16438.
98 lines
2.6 KiB
Plaintext
98 lines
2.6 KiB
Plaintext
!!ARBvp1.0
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PARAM cameraPos = program.local[0];
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PARAM sunDir = program.local[1];
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PARAM sunColor = program.local[2];
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PARAM losTransform = program.local[3];
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PARAM shadowTransform[4] = { program.local[4..7] };
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#if USE_INSTANCING
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PARAM instancingTransform[4] = { program.local[8..11] };
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#endif
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#if USE_FP_SHADOW && USE_SHADOW_PCF
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PARAM shadowScale = program.local[12];
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#endif
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TEMP temp;
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TEMP lighting;
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OUTPUT v_tex = result.texcoord[0];
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OUTPUT v_shadow = result.texcoord[1];
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OUTPUT v_los = result.texcoord[2];
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#if USE_SPECULAR
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OUTPUT v_normal = result.texcoord[3];
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OUTPUT v_half = result.texcoord[4];
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#endif
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//// Compute position and normal:
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#if USE_INSTANCING
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TEMP position;
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TEMP normal;
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DP4 position.x, instancingTransform[0], vertex.position;
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DP4 position.y, instancingTransform[1], vertex.position;
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DP4 position.z, instancingTransform[2], vertex.position;
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MOV position.w, 1.0;
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DP3 normal.x, instancingTransform[0], vertex.normal;
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DP3 normal.y, instancingTransform[1], vertex.normal;
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DP3 normal.z, instancingTransform[2], vertex.normal;
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#else
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ATTRIB position = vertex.position;
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ATTRIB normal = vertex.normal;
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#endif
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DP4 result.position.x, state.matrix.mvp.row[0], position;
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DP4 result.position.y, state.matrix.mvp.row[1], position;
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DP4 result.position.z, state.matrix.mvp.row[2], position;
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DP4 result.position.w, state.matrix.mvp.row[3], position;
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//// Compute lighting:
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// Diffuse factor
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DP3 lighting, normal, -sunDir;
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MAX lighting, 0.0, lighting;
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// Scale diffuse to allow overbrightness (since result.color will be clamped to [0, 1])
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MUL lighting, lighting, 0.5;
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// Apply light color
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MUL result.color, lighting, sunColor;
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#if USE_SPECULAR
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// eyeVec = normalize(cameraPos - position);
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TEMP eyeVec;
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SUB eyeVec.xyz, cameraPos, position;
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DP3 eyeVec.w, eyeVec, eyeVec;
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RSQ eyeVec.w, eyeVec.w;
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MUL eyeVec.xyz, eyeVec, eyeVec.w;
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// v_half = normalize(-sunDir + eyeVec);
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TEMP half;
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SUB half.xyz, eyeVec, sunDir;
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DP3 half.w, half, half;
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RSQ half.w, half.w;
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MUL v_half.xyz, half, half.w;
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MOV v_normal, normal;
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#endif
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//// Texture coordinates:
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MOV v_tex, vertex.texcoord[0];
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#if USE_SHADOW
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#if USE_FP_SHADOW && USE_SHADOW_PCF
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TEMP shadowtc;
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DP4 shadowtc.x, shadowTransform[0], position;
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DP4 shadowtc.y, shadowTransform[1], position;
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MUL v_shadow.xy, shadowtc, shadowScale;
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#else
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DP4 v_shadow.x, shadowTransform[0], position;
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DP4 v_shadow.y, shadowTransform[1], position;
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#endif
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DP4 v_shadow.z, shadowTransform[2], position;
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DP4 v_shadow.w, shadowTransform[3], position;
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#endif
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MAD v_los, position.xzzz, losTransform.x, losTransform.y;
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END
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