94 lines
2.6 KiB
Plaintext
94 lines
2.6 KiB
Plaintext
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renderProgram megagen/generateDistribution {
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program vertex arb { <%
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OPTION ARB_position_invariant;
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TEMP R0, R1, R2;
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# rotate the alphaSource texcoords
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SUB R0, vertex.texcoord[0], 0.5;
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MUL R1.x, R0.x, program.local[0].y;
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MUL R1.y, R0.y, program.local[0].x;
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SUB R2.x, R1.x, R1.y;
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MUL R1.x, R0.y, program.local[0].y;
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MUL R1.y, R0.x, program.local[0].x;
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ADD R2.y, R1.x, R1.y;
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ADD result.texcoord[0].xy, R2, 0.5;
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# rotate the alphaModulationSource texcoords
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SUB R0, vertex.texcoord[1], 0.5;
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MUL R1.x, R0.x, program.local[0].w;
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MUL R1.y, R0.y, program.local[0].z;
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SUB R2.x, R1.x, R1.y;
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MUL R1.x, R0.y, program.local[0].w;
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MUL R1.y, R0.x, program.local[0].z;
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ADD R2.y, R1.x, R1.y;
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ADD result.texcoord[1].xy, R2, 0.5;
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# copy the global mask texcoords
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MOV result.texcoord[2], vertex.texcoord[2];
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%> }
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program fragment arb { <%
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TEMP R0, R1, R2;
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TEMP colorSource, alphaSource, alphaModulationSource, globalMaskSource;
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PARAM consts = { 3.14159265358979323846, 0, 0, 0 }; # pi
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TEX alphaSource, fragment.texcoord[0], texture[0], 2D;
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TEX alphaModulationSource, fragment.texcoord[1], texture[1], 2D;
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TEX globalMaskSource, fragment.texcoord[2], texture[2], 2D;
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# Invert alpha if needed (program.local[0].y < -1)
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SUB R0, 1, alphaSource;
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CMP alphaSource, program.local[0].y, R0, alphaSource;
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# Multiply with global mask if needed (program.local[0].w < -1)
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MUL R0, alphaSource, globalMaskSource;
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CMP alphaSource, program.local[0].w, R0, alphaSource;
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# Add noise if needed (program.local[0].z < -1)
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ADD R0, alphaModulationSource, -0.5;
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MUL R1, alphaSource, consts.x;
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SIN R1, R1.x;
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MUL R0, R1.x, R0;
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ADD_SAT R0, alphaSource, R0;
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CMP alphaSource, program.local[0].z, R0, alphaSource;
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# Increase contrast
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ADD R0, alphaSource, -program.local[1].x; # ramp start clamp
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MUL R1, program.local[1].y, consts.x;
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MUL R1, R1, R0;
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COS R1, R1.x;
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MAD R1, R1, -0.5, 0.5;
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CMP R1, R0, 0, R1;
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ADD R0, alphaSource, -program.local[1].z; # ramp end clamp
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CMP alphaSource, R0, R1, 1;
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# scale
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MUL result.color, program.local[0].x, alphaSource;
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%> }
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}
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renderProgram megagen/mergeDistribution {
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program vertex arb { <%
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OPTION ARB_position_invariant;
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MOV result.texcoord[0], vertex.texcoord[0];
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%> }
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program fragment arb { <%
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TEMP parentAlpha, childAlpha, R0;
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TEX parentAlpha, fragment.texcoord[0], texture[0], 2D;
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TEX childAlpha, fragment.texcoord[0], texture[1], 2D;
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MUL result.color, parentAlpha, childAlpha;
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%> }
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}
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