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@@ -215,7 +215,8 @@ __kernel void raster_kernel(__global float* objects, __global float* verticies,
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w1 = ((y2 - y0) * (id_x - x0) + (x0 - x2) * (id_y - y0)) / denominator; \
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w2 = 1.0 - w0 - w1; \
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\
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- float z = w0 * z0 + w1 * z1 + w2 * z2; \
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+ float w_over_z = (w0 / z0 + w1 / z1 + w2 / z2); \
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+ float z = 1.0 / w_over_z; \
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\
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if (z < z_pixel){ \
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z_pixel = z; \
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@@ -257,8 +258,8 @@ __kernel void raster_kernel(__global float* objects, __global float* verticies,
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\
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switch (show_buffer){\
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case 0:{\
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- double ux = w0 * u_x0 + w1 * u_x1 + w2 * u_x2;\
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- double uy = w0 * u_y0 + w1 * u_y1 + w2 * u_y2;\
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+ double ux = (w0 * (u_x0 / z0) + w1 * (u_x1 / z1) + w2 * (u_x2 / z2)) / w_over_z;\
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+ double uy = (w0 * (u_y0 / z0) + w1 * (u_y1 / z1) + w2 * (u_y2 / z2)) / w_over_z;\
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\
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int texture_width = texture_info[texture_index * 3];\
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int texture_height = texture_info[texture_index * 3 + 1];\
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@@ -288,9 +289,9 @@ __kernel void raster_kernel(__global float* objects, __global float* verticies,
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\
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break;}\
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case 2:{\
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- float nx = w0 * n_x0 + w1 * n_x1 + w2 * n_x2;\
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- float ny = w0 * n_y0 + w1 * n_y1 + w2 * n_y2;\
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- float nz = w0 * n_z0 + w1 * n_z1 + w2 * n_z2;\
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+ float nx = (w0 * (n_x0 / z0) + w1 * (n_x1 / z1) + w2 * (n_x2 / z2)) / w_over_z;\
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+ float ny = (w0 * (n_y0 / z0) + w1 * (n_y1 / z1) + w2 * (n_y2 / z2)) / w_over_z;\
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+ float nz = (w0 * (n_z0 / z0) + w1 * (n_z1 / z1) + w2 * (n_z2 / z2)) / w_over_z;\
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\
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nx = clamp((nx * 0.5f + 0.5f) * 255.0f, 0.0f, 255.0f);\
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ny = clamp((ny * 0.5f + 0.5f) * 255.0f, 0.0f, 255.0f);\
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iver