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wined3d: Handle a zero source value for WINED3DSIH_RCP.

This commit is contained in:
Henri Verbeet 2010-02-01 13:52:57 +01:00 committed by Alexandre Julliard
parent 4a8f93bade
commit ef82681d59
1 changed files with 9 additions and 4 deletions
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13
dlls/wined3d/glsl_shader.c
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@ -2229,10 +2229,15 @@ static void shader_glsl_rcp(const struct wined3d_shader_instruction *ins)
mask_size = shader_glsl_get_write_mask_size(write_mask);
shader_glsl_add_src_param(ins, &ins->src[0], WINED3DSP_WRITEMASK_3, &src_param);
if (mask_size > 1) {
shader_addline(ins->ctx->buffer, "vec%d(1.0 / %s));\n", mask_size, src_param.param_str);
} else {
shader_addline(ins->ctx->buffer, "1.0 / %s);\n", src_param.param_str);
if (mask_size > 1)
{
shader_addline(ins->ctx->buffer, "vec%d(%s == 0.0 ? FLT_MAX : 1.0 / %s));\n",
mask_size, src_param.param_str, src_param.param_str);
}
else
{
shader_addline(ins->ctx->buffer, "%s == 0.0 ? FLT_MAX : 1.0 / %s);\n",
src_param.param_str, src_param.param_str);
}
}